100 Best Free and High Quality Linux Games

There are literally thousands of games that can be played on Linux, if you're a casual gamer or hardcore Linux fan who is looking to have a bit of fun on your favourite distro, there's plenty of games to choose from.

If you are unsure what to get, this list will help you out. This list includes all the popular and free high quality games that runs on Linux natively, from action/first-person shooters to real-time and turn-based strategy games to rpg/mmorpg etc.

If you have more games that you would like to recommend, feel free to share it.

Below are the list. Have fun!

1. Urban Terror

Urban Terror

Urban Terror is a free, stand-alone first-person shooter computer game developed by FrozenSand. It is available for Windows, Linux and Mac. Urban Terror is played using the free, stand-alone, ioquake3 engine modified, which doesn't require Quake III Arena anymore. It features realistic gameplay, much like in Counter Strike, its enjoyable and addictive game.

Genre: Action, First person shooter
License: Proprietary/Closed Source
Cost: Free
Website: http://www.urbanterror.info/home/

2. Alien Arena

Alien Arena

Alien Arena is a free, stand-alone first-person shooter computer game based on source code released by id Software. The game runs on the CRX engine, and features modern effects such as real-time lighting and shadows, shaders, light bloom, reflective surfaces and much more, while still being able to run on even modest systems. The game includes a built in, as well as external server browser and chat client. Players can look up their stats online, chat with other players, and become part of a growing community. The Alien Arena experience is now a finely tuned, highly polished body of work. Alien Arena has transformed into a lean, clean, fragging machine, with stunning visual effects that are usually reserved for commercial titles.

Genre: Action, First person shooter
License: Free/Open source
Cost: Free
Website: http://red.planetarena.org/

3. Wolfenstein: Enemy Territory

Wolfenstein: Enemy Territory

Wolfenstein: Enemy Territory is a free, stand-alone, downloadable multiplayer game in which players wage war as Axis or Allies in team-based combat. It's a team game; you will win or fall along with your comrades. The only way to complete the objectives that lead to victory is by cooperation, with each player covering their teammates and using their class special abilities in concert with the others.

Genre: Action, First person shooter, Tactical shooter
License: Proprietary/Closed Source
Cost: Free
Website: http://www.splashdamage.com/wolfet#/screens_wet/003_tb.jpg

4. True Combat: Elite

True Combat: Elite

TrueCombat:Elite is an Enemy Territory total conversion modification of the free, popular, stand-alone first-person shooter Wolfenstein: Enemy Territory. TCE puts you into the role of elite mercenary soldier in the conflicts of two internationally operating forces. The Global Intervention Force (GIF626 aka in-game as "Spec Ops") is a special force formed of the top of the world experts joining from US Delta force, UK SAS, German KSK and GSG9, to mention a few. An international mercenary organization known as "The Unit" (aka "Terror" in-game) is their opponent.

Genre: Action, Total conversion, First person shooter, Tactical shooter
License: Proprietary/Closed Source
Cost: Free
Website: http://www.truecombatelite.com/

5. True Combat: Close Quarters Battle

True Combat: Close Quarters Battle

True Combat: Close Quarters Battle (TC:CQB) is the successor to True Combat: Elite (TC:E), a tactical shooter with online multiplayer. The game is currently in alpha version, so expect bugs (and more features/maps to come).

Genre: Action, Total conversion, First person shooter, Tactical shooter
License: Proprietary/Closed Source
Cost: Free
Website: http://www.truecombatelite.com/

6. Smokin' Guns

Smokin' Guns

Smokin' Guns (SG) is a first-person shooter video game. Smokin' Guns is intended to be a semi-realistic simulation of the "Old West's" atmosphere and was developed on id Software's Quake III Arena Engine. Gameplay as well as locations are inspired by Western movies, particularly from the Italowestern respectively Spaghetti Western genre.

Genre: Action, First person shooter
License: Free/Open source
Cost: Free
Website: http://www.smokin-guns.net/

7. AssaultCube

Assault Cube

AssaultCube is a FREE multiplayer first-person shooter game, based on the CUBE engine. Taking place in realistic environments, with fast, arcade gameplay, it's addictive and fun! With efficient bandwidth usage, it's low-latency and can even run over a 56Kbps connection. It's tiny too, weighing in at a lightweight 40 MB package available for Windows, Mac and Linux. On the correct settings, it can even run on old hardware (Pentium III and above).

Genre: Action, First person shooter
License: Free/Open source
Cost: Free
Website: http://assault.cubers.net/

8. Cube 2: Sauerbraten

Sauerbraten

Cube 2: Sauerbraten is a free multiplayer/singleplayer first person shooter, built as a major redesign of the Cube FPS. Much like the original Cube, the aim of this game is not necessarily to produce the most features & eyecandy possible, but rather to allow map/geometry editing to be done dynamically in-game, to create fun gameplay and an elegant engine.

Genre: Action, First person shooter
License: Free/Open source
Cost: Free
Website: http://sauerbraten.org/

9. Dark Places

Dark Places

DarkPlaces is a port/mod of the Quake engine using the source code released by id Software.

Genre: Action, First person shooter
License: Free/Open source
Cost: Free
Website: http://icculus.org/twilight/darkplaces/

10. Nexuiz

Nexuiz

Nexuiz is a free first-person shooter by Alientrap Software. Nexuiz uses DarkPlaces, a significantly modified Quake engine. The graphics in Nexuiz use coronas, the bloom shader effect, Realtime World and Dynamic Lighting and shadowing, shaders (with OpenGL 2.0), offset mapping, and High dynamic range rendering. All these effects can be turned off to make the game run on older hardware.
Nexuiz is primarily multiplayer (though it includes a full single-player campaign, which allows one to play through the various multiplayer game types and maps with bots), and allows for hosting and joining of games. It can also support new gametypes, or whole conversions quickly applied to it (much like Quake). Nexuiz supports most Quake modifications (although with varying functionality). Currently there are a few custom mods and maps used.

Genre: Action, First person shooter
License: Free/Open source
Cost: Free
Website: http://www.alientrap.org/games/nexuiz

11. Xonotic

Xonotic

Xonotic is a first-person shooter video game. It is cross-platform, free and open source software. It is a fork of Nexuiz, and is based on the DarkPlaces engine, a heavily modified version of the Quake engine.

Genre: Action, First person shooter
License: Free/Open source
Cost: Free
Website: http://www.xonotic.org/

12. Red Eclipse

Red Eclipse

Red Eclipse is a Free and Open Source game, using SDL and OpenGL which allows it to be ported to many platforms. The game is a single-player and multi-player first-person ego-shooter, built as a total conversion of Cube Engine 2, which lends itself toward a balanced gameplay, completely at the control of map makers, while maintaining a general theme of agility in a variety of environments.

Genre: Action, First person shooter
License: Free/Open source
Cost: Free
Website: http://www.redeclipse.net/

13. Legends

Legends

Legends is a fast-paced first-person-perspective online multiplayer game released as freeware (software license). The game is designed to take advantage of the beautiful environments available from the Torque engine it is based on, while still offering the breakneck pacing and variety of styles available from such classics as Quake and Tribes.
Gameplay is not the strafe-strafe-jump-strafe-shoot-strafe-run-like-hell style a lot of games espouse; the addition of a jetpack adds a third dimension of mobility that makes skill, forethought, and restraint necessities to winning.

Genre: Action, First person shooter
License: Proprietary/Closed Source
Cost: Free
Website: http://www.legendsthegame.net/

14. World of Padman

World of Padman

World of Padman is an open source first-person shooter computer game available in both English and German. Originally it was a modification for the game QUAKE III Arena titled PadMod created in the year 2004. After the source code for Quake III Arena was released, the game became standalone. The idea is based on the Padman comic strip for the magazine PlayStation Games created by the professional cartoon artist Andreas 'ENTE' (German for "Duck") Endres, who is also the man who made many of the maps included with the game in 1998. The current version runs on an enhanced version of the ioquake3 engine, which is based on the Quake III Arena engine. Most of the maps in the game are lilliput style, and have a commercial-quality level of graphic complexity.

Genre: Action, First person shooter
License: Free/Open source
Cost: Free
Website: http://www.worldofpadman.com/

15. Tremulous

Tremulous

Tremulous is a free and open source team-based first-person shooter with real-time strategy elements. The game features two opposing teams: humans and aliens. Each team must attack the enemy's base and team members, while defending their own base. The game has been downloaded over 2,000,000 times and was voted Player's Choice Standalone Game of the Year in Mod Database's Mod of the Year 2006 competition.

Genre: Action, Strategy, First person shooter, Real-time
License: Free/Open source
Cost: Free
Website: http://tremulous.net/

16. Warsow

Warsow

Warsow is a completely free fastpaced first-person shooter (FPS) set in a futuristic cartoon-like world for Windows, Linux and Mac OS X.

Genre: Action, First person shooter
License: Proprietary/Closed Source
Cost: Free
Website: http://www.warsow.net/

17. Open Arena

Open Arena

OpenArena is a free network enabled multiplayer first person shooter based on the ioquake3 fork of the id tech 3 engine. It features many game types including the traditional deathmatch and sports a varied cast of sadistic characters. Due to violent and occasional racy content it is probably unsuitable for children under the age of 17.

Genre: Action, First person shooter
License: Free/Open source
Cost: Free
Website: http://www.openarena.ws/smfnews.php

18. ZEQ2 Lite

ZEQ2 Lite

ZEQ2-Lite is an open-sourced and mod expandable project based on a highly modified ioQuake3 engine foundation and features many true-to-reference DBZ visuals and mechanics. Additionally, there exists a custom from-scratch particle system as well an extended number of configuration files that can be used to control character skills (visually & mechanically), world particle effects, forms / transformations / tiers, music playlists, and other aspects. This attribute makes the project more than simply another DBZ modification as strong capabilities exist for user mod creation exists without need for actual programming.

Genre: Action, Third person
License: Free/Open source
Cost: Free
Website: http://zeq2.com/lite/

19. Zero Ballistics

Zero Ballistics

Zero Ballistics is a unique blend of first person shooter and tank combat, focusing on multiplayer gaming exclusively. Set in lush alpine environments covering all seasons, playing Zero Ballistics is as thrilling as it is relaxing.

Genre: Action, Shoot/Beat 'em up
License: Free/Open source
Cost: Free
Website: http://www.zeroballistics.com/

20. Q3Rally

Q3Rally

Q3Rally is a car driving and car combat Modification for OpenArena.

Genre: Action, Driving
License: Free/Open source
Cost: Free
Website: http://www.q3rally.com/

21. Greedy Car Thieves

Greedy Car Thieves

Greedy Car Thieves is an action driving game that takes its cues from the classic top-down GTA games. Multiplayer action is the primary focus, allowing players to free roam around the city in a slew of game modes including Free For All, Bombmatch and Race. A map editor is also available.

Genre: Action, Driving, Third person
License: Proprietary/Closed Source
Cost: Free
Website: http://gct-game.net/

22. Lemmingball Z

Lemmingball Z

Lemmingball Z is a fighting game for linux and windows, loosely based on `Dragonball Z` the hit anime. And when we say loosely based, we mean with a big twist. Instead off the normal characters from the anime, this game features cute LEMMINGS fighting DBZ style!

Genre: Action
License: Proprietary/Closed Source
Cost: Free
Website: http://www.lbz3d.com/

23. Waterstorm

Waterstorm

Waterstorm is a 2d multiplayer game. Fast paced action with mini submarines and four game modes.
After years of exploiting the Earth, the polar caps melted as a consequence of the greenhouse effect. Water has flooded the majority of our continents pollution, toxic waste and atomic contamination have made the remaining ones uninhabitable.

Genre: Action
License: Proprietary/Closed Source
Cost: Free
Website: http://www.waterstorm-game.com/portal/index.php

24. Teeworlds

Teeworlds

Teeworlds is a free online multiplayer game, available for all major operating systems. Battle with up to 16 players in a variety of game modes, including Team Deathmatch and Capture The Flag. You can even design your own maps!

Genre: Action
License: Free/Open source
Cost: Free
Website: http://www.teeworlds.com/

25. Savage: The Battle for Newerth

The Battle for Newerth

Savage: The Battle for Newerth is a science fantasy computer game that combines aspects of the real-time strategy (RTS) and first-person shooter (FPS) genres. It takes place in the distant future when humankind has rebuilt society following an apocalypse, but is threatened by intelligent beasts. The game was released in 2003, and was turned freeware on September 1, 2006.

Genre: Action, Strategy, First person shooter, Third person
License: Proprietary/Closed Source
Cost: Free
Website: http://www.newerth.com/

26. Savage 2: A Tortured Soul

Savage 2: A Tortured Soul

Savage 2: A Tortured Soul is the sequel to the critically acclaimed online multiplayer game, which introduced gamers to the completely new Real Time Strategy Shooter (RTSS) gaming genre. Savage enabled players to opt for either the fast-paced, run-and-gun action of a first-person shooter (FPS) game – playing as a Warrior – or the more cerebral and tactical planning of a real-time strategy (RTS) game – playing as a Commander – working together as a team to defeat the enemy. Savage 2: A Tortured Soul builds upon the addicting, fast-paced gameplay of the original with additional squad-based features and enhanced role-playing game (RPG) elements which enable players to build their character level and abilities throughout the game.

Genre: Action, Strategy, First person shooter, RPG
License: Proprietary/Closed Source
Cost: Free
Website: http://savage2.com/en/main.php

27. Regnum Online

Regnum Online

Regnum Online is a free massive multiplayer online role playing game (MMORPG) where the player are immersed in a 3D virtual world. There they can live as Elves, Humans Dwarves, or Dark Elves for example having exciting adventures, exploring the wild lands or joining an army of players to take on the other kingdoms armies. Regnum Online is absolutely free and you can play with no level or time restrictions.

Genre: MMORPG
License: Proprietary/Closed Source
Cost: Free
Website: http://www.regnumonlinegame.com/index.php?l=1&sec=0

28. PlaneShift

PlaneShift

PlaneShift is a Role Playing Game immersed into a 3D virtual fantasy world which is fully free to play. Fully free means you will have no surprises of premium content which will limit your gameplay or unbalance the game. There are no limitations in skills, ranks, abilities, items you can gain with your free account. There are no time limits or additional constraints.

Genre: MMORPG
License: Free/Open source
Cost: Free
Website: http://www.planeshift.it/

29. Auteria

Auteria

Auteria is a fantasy world within our real world, it is free and a very interesting, modern, massively multiplayer online role-playing game (MMORPG), which will put you in a fantasy world with many problems to solve (quests), many other players to meet (growing community), and finally many secrets to discover for yourself. It is a free to play 3D multiplayer online game. Auteria is still under developement and in an Open Beta stage.

Genre: MMORPG, Third person
License: Proprietary/Closed Source
Cost: Free
Website: http://auteria.com/

30. IConquerU

IConquerU

IConquerU is a free fantasy massively multiplayer online role-playing game (MMORPG). Take the role of a valorous adventurer and explore a mysterious world filled with magic and bravery! Meet up with people from all over the world to live through a whole new game experience!

Genre: MMORPG
License: Proprietary/Closed Source
Cost: Free
Website: http://www.iconqueryou.com/

31. Eternal Lands

Eternal Lands

Eternal Lands is a free 3D fantasy MMORPG created by Radu Privantu. Set in a classic medieval fantasy world, Eternal Lands has a wide range of playable races and a skill based progression system. Players can level up any of the twelve skills by using them. There are no racial differences, instead players can specialize their character anyway they want as they progress through the game. Eternal Lands has the look and feel of classic PC RPGs. Movement and combat are point and click, but many of the models are rendered in 3D. It’s not the most exciting MMORPG, but players looking for an oldschool experience with plenty of role playing potential may enjoy Eternal Lands.

Genre: MMORPG
License: Proprietary/Closed Source
Cost: Free
Website: http://www.eternal-lands.com/

32. RuneScape

RuneScape

RuneScape is a free MMORPG, set in a fantasy world of warring races, ravaged landscapes and sinister powers. Having chosen an adventurer, players are free to find their role within it: to live by the sword and face hundreds of enemies, to further the storyline in RuneScape's quests, or to train in any of a number of skills.

Genre: MMORPG
License: Proprietary/Closed Source
Cost: Free
Website: http://www.runescape.com/

33. The Mana World

The Mana World

The Mana World (TMW) is a Massive Multiplayer Online Role Playing Game (MMORPG). TMW uses 2D graphics and aims to create a large and diverse interactive world with thousand of players online. The Mana World can be played on Windows, Linux and OSX.

Genre: MMORPG
License: Free/Open source
Cost: Free
Website: http://themanaworld.org/

34. Daimonin

Daimonin

Daimonin is a graphical 2d tile-based MMORPG with true color and mp3 sound. Daimonin offers a free public server at http://www.daimonin.com.

Genre: MMORPG
License: Free/Open source
Cost: Free
Website: http://www.daimonin.org/

35. Atrinik

Atrinik

Atrinik is a free open source MMORPG with 2D isometric graphics based on Daimonin and Crossfire. All the content and code is released under GNU GPL.

Genre: MMORPG
License: Free/Open source
Cost: Free
Website: http://www.atrinik.org/

36. Stendhal

Stendhal

Stendhal is a fully fledged multiplayer online adventures game (MMORPG) developed using the Arianne game development system. Stendhal features a new, rich and expanding world in which you can explore towns, buildings, plains, caves and dungeons. You will meet NPCs and acquire tasks and quests for valuable experience and cold hard cash. Your character will develop and grow and with each new level up become stronger and better. With the money you acquire you can buy new items and improve your armour and weapons. And for the blood thirsty ones of you; satisfy your killing desires by roaming the world in search of evil monsters!

Genre: MMORPG
License: Free/Open source
Cost: Free
Website: http://stendhalgame.org/

37. GemRB

GemRB

GemRB is a portable open-source implementation of Bioware's Infinity Engine which was written to support pseudo-3D role playing games based on the Dungeons & Dragons ruleset. That includes game classics like the Baldur's Gate series, Planescape: Torment and the Icewind Dale series. It is in beta stage.

Genre: RPG
License: Free/Open source
Cost: Free
Website: http://www.gemrb.org/wiki/doku.php?id=start

38. Hero of Allacrost

Hero of Allacrost

Hero of Allacrost is a single player 2D role-playing game inspired by classic console RPGs. In Hero of Allacrost, the player will explore rich environments, solve challenging dungeon puzzles, and fight strategic battles in an active-time based system.

Genre: RPG
License: Free/Open source
Cost: Free
Website: http://www.allacrost.org/

39. FreeDroidRPG

FreeDroidRPG

FreedroidRPG is a mature open source sci-fi isometric role playing game. It strives at providing an immersive ambience backed by refined graphics and music tracks. Besides the hack'n'slash action phases, dialogs with dozens of NPCs take care of storytelling. The player can fight with melee or ranged weapons, take control of his enemies by hacking, and remotely execute code on enemy robots.

Originally based on FreeDroid Classic, this project now has vastly deviated from its parent.

The game tells the story of a world destroyed by a conflict between the bots and their human masters. Play as Tux in a quest to save the world from the murderous rebel bots who know no mercy. You get to choose which path you wish to follow, and freedom of choice is everywhere in the game.

Genre: RPG
License: Free/Open source
Cost: Free
Website: http://www.freedroid.org/

40. Ardentryst

Ardentryst

Ardentryst is an action/RPG sidescroller, focused not just on fighting, but on story, and character development. Strategy as well as reflexes will be needed to overcome the game. The game is set in another world. It is somewhat a cross between Donkey Kong Country, Mario, Castlevania and Kingdom Hearts. Ardentryst is focused on a fantasy world. The player is guided through a storyline which he or her must act in and play a major role in keeping peace and order in Ardentryst. It features two playable characters and a variety of weapons, items, armour, monsters, and beautiful level scenery and graphics.

Genre: RPG, Action, Adventure, Platform
License: Free/Open source
Cost: Free
Website: http://jordan.trudgett.com/

41. GNU FreeDink

GNU FreeDink

GNU FreeDink is an adventure/role-playing game. GNU FreeDink is a portable and enhanced version of the Dink Smallwood game engine.

Genre: Adventure, RPG
License: Free/Open source
Cost: Free
Website: http://www.gnu.org/software/freedink/

42. Battle for Wesnoth

Battle for Wesnoth

Battle for Wesnoth is a Free, turn-based tactical strategy game with a high fantasy theme, featuring both single-player, and online/hotseat multiplayer combat. Fight a desperate battle to reclaim the throne of Wesnoth, or take hand in any number of other adventures.

Genre: Turn-based Strategy
License: Free/Open source
Cost: Free
Website: http://www.wesnoth.org/

43. UFO: Alien Invasion

UFO: Alien Invasion

UFO: Alien Invasion is an open source strategy video game in which the player fights aliens that are trying to take control of the Earth.

Genre: Turn-based Strategy
License: Free/Open source
Cost: Free
Website: http://ufoai.ninex.info/wiki/index.php/News

44. Legendary Legions

Legendary Legions

Its turn-based strategy with fantasy theme and rpg-elements (e.g. leveling the units, and skills which you could raise). Your mission is to destroy enemies castle. You can be on good or evil side. A the moment game supports only 2 human player game, but in future we plan to add AI and network play. The gameplay is similar to this in Heroes of Might and Magic but its much simpler of course.

Genre: Turn-based Strategy
License: Free/Open source
Cost: Free
Website: http://info.wsisiz.edu.pl/~umbras/

45. Free Heroes II

Free Heroes II

The Free Heroes II project aims to recreate the Heroes of Might and Magic II engine as open source with SDL, to play the game on more platforms.

Genre: Turn-based Strategy
License: Free/Open source
Cost: Free
Website: http://sourceforge.net/apps/mediawiki/fheroes2/index.php?title=Main_Page

46. FreeCol

FreeCol

FreeCol is a turn-based strategy game based on the old game Colonization, and similar to Civilization. The objective of the game is to create an independent nation. You start with only a few colonists defying the stormy seas in their search for new land. Will you guide them on the Colonization of a New World?

Genre: Turn-based Strategy
License: Free/Open source
Cost: Free
Website: http://www.freecol.org/

47. Freeciv

FreeCiv

FreeCiv is an Open Source game similar to the popular PC Civilization series by Sid Meier. Your goal is to build cities, collect resources, organize your government, and build an army. It is free to download and use.

Genre: Turn-based Strategy
License: Free/Open source
Cost: Free
Website: http://freeciv.wikia.com/wiki/Main_Page

48. LordsAWar!

LordsAWar!

LordsAWar! is a free, turn-based strategy game where up to 8 players strive for control of as many cities as possible. Produce new armies in cities to conquer nearby cities. Using the income from those cities, make more armies to take more cities. Send a hero to a temple to get a quest, or maybe search a nearby ruin instead. Play with others or against the computer.

Genre: Turn-based Strategy
License: Free/Open source
Cost: Free
Website: http://www.nongnu.org/lordsawar/

49. Scorched3D

Scorched3D

Scorched3D is a free to play and open source modernisation of the classic DOS game Scorched Earth "The Mother Of All Games". The game incorporates lively, fully destructible 3D landscapes that include animated jets, naval vessels, water and even birds, with detailed tanks and projectiles and stunning visual effects.

Genre: Turn-based Strategy
License: Free/Open source
Cost: Free
Website: http://www.scorched3d.co.uk/

50. Warmux (Formerly Wormux)

Warmux

Warmux (formerly wormux) is a free and open-source game getting its initial inspiration from the Worms game.

Genre: Turn-based Strategy
License: Free/Open source
Cost: Free
Website: http://www.wormux.org/phpboost/news/news.php

51. Hedgewars

Hedgewars

Hedgewars is a free and open-source game and is based on the Worms series. It is similar to Wormux, another open-source clone of Worms. Hedgewars is cross-platform and runs on Linux, Windows, and Mac OS X.

Genre: Turn-based Strategy
License: Free/Open source
Cost: Free
Website: http://www.hedgewars.org/

52. Glest

Glest

Glest is a free 3D real-time strategy game, where you control the armies of two different factions: Tech, which is mainly composed of warriors and mechanical devices, and Magic, that prefers mages and summoned creatures in the battlefield. Glest is not just a game, but also an engine to make strategy games, based on XML and a set of tools. A few mods already exist.

Genre: Real-time Strategy
License: Free/Open source
Cost: Free
Website: http://glest.org/en/index.php

53. MegaGlest

MegaGlest

MegaGlest is an open source 3D-real-time strategy game, where you control the armies of one of seven different factions: Tech, Magic, Egyptians, Indians, Norsemen, Persian or Romans. The game is setup in one of 16 naturally looking settings, which -like the unit models- are crafted with great appreciation for detail. Additional game data can be downloaded from within the game at no cost.

Genre: Real-time Strategy
License: Free/Open source
Cost: Free
Website: http://megaglest.org/

54. 0 A.D.

0A.D.

0 A.D. is a free, open-source, cross-platform real-time strategy game under development by Wildfire Games. It is a historical war and economy game focusing on the years between 500 B.C. and 500 A.D.

Genre: Real-time Strategy
License: Free/Open source
Cost: Free
Website: http://wildfiregames.com/0ad/

55. Seven Kingdoms: Ancient Adversaries

Seven Kingdoms: Ancient Adversaries

Seven Kingdoms is a free open source Real-time Strategy game designed by Trevor Chan, brings a mix of RTS like Warcraft 2 and turn-based strategy of Civilization. The real-time strategy with trade, diplomacy, and espionage sets it apart from the rest. In 2009, Enlight Software released the game under the GPL license. 7kfans project is updating the game and provides a community for fans. A free Seven Kingdoms will help continue the legacy. Seven Kingdoms now supports SDL instead of DirectX, and supports Linux natively.

Genre: Real-time Strategy
License: Free/Open source
Cost: Free
Website: http://7kfans.com/

56. Battles of Antargis

Battles of Antargis

Battles of Antargis is a medieval-like realtime strategy game. You are a hero who was betrayed and you have to unify the kingdom and rebuild the old empire. Old myths will pass your way.

Genre: Real-time Strategy
License: Free/Open source
Cost: Free
Website: http://antargis.berlios.de/

57. Zero-K

Zero-K

Zero-K is an open source RTS using the Spring engine. It aims to provide a dynamic massively multiplayer metagame built around a highly enjoyable, imaginative RTS core, as well as a compelling single-player experience.

Genre: Real-time Strategy, Total conversion
License: Free/Open source
Cost: Free
Website: http://zero-k.info/

58. Spring: 1944

Spring: 1944

Spring: 1944 is a WWII themed game based on the open source Spring Engine. Our goal is to create four fully functional sides (US, Germany, USSR, Britain) with period-accurate units and strengths. Realism is a primary design goal, second only to creating a game that is fun and accessible to play.

Genre: Real-time Strategy, Total conversion
License: Free/Open source
Cost: Free
Website: http://www.spring1944.org/

59. netPanzer

netPanzer

netPanzer is an online multiplayer tactical warfare game designed for fast action combat. Gameplay concentrates on the core - no resource management is needed. The game is based on quick tactical action and unit management in real-time. Battles progress quickly and constantly as destroyed players respawn with a set of new units. Players can join or leave games at any time.

Genre: Real-time Strategy
License: Free/Open source
Cost: Free
Website: http://www.netpanzer.org/

60. Widelands

Widelands

Widelands is an open source real-time strategy game aiming for gameplay similar to Settlers II by BlueByte. In this game, you start out on a small piece of land with nothing more than a few of useful resources. Using those, you can build yourself an empire with many thousands of inhabitants. On your way towards this goal, you will have to build up an economic infrastructure, explore the lands around you and face enemies who are trying to rule the world just like you do.

Genre: Real-time Strategy
License: Free/Open source
Cost: Free
Website: http://wl.widelands.org/

61. Unknown Horizons

Unknown Horizons

Unknown Horizons is a 2D realtime strategy simulation with an emphasis on economy and city building. Expand your small settlement to a strong and wealthy colony, collect taxes and supply your inhabitants with valuable goods. Increase your power with a well balanced economy and with strategic trade and diplomacy.

Genre: Real-time Strategy, Economy
License: Free/Open source
Cost: Free
Website: http://www.unknown-horizons.org/

62. OpenTTD

OpenTTD

OpenTTD is an open source remake and expansion of the 1995 Chris Sawyer video game Transport Tycoon Deluxe. It is an "urban planning and simulation game" in which the player aims to earn money through transportation of passengers and freight by land, water and air.

Genre: Simulation, Economy
License: Free/Open source
Cost: Free
Website: http://www.openttd.org/en/

63. Simutrans

Simultrans

Simutrans is a freeware and open-source transportation simulation game. Your goal is to establish a successful transport company. Transport passengers, mail and goods by rail, road, ship and air. Interconnect cities, districts, public buildings, industries and tourist attractions by buiding a transport network you always dreamed of.

Genre: Simulation, Economy
License: Free/Open source
Cost: Free
Website: http://www.simutrans.com/

64. LinCity-NG

LinCity

LinCity-NG is a city simulation game. It is a polished and improved version of the classic LinCity game. In the game, you are required to build and maintain a city. You can win the game either by building a sustainable economy or by evacuating all citizens with spaceships.

Genre: Simulation, Economy
License: Free/Open source
Cost: Free
Website: http://lincity-ng.berlios.de/wiki/index.php/Main_Page

65. Vega Strike

Vega Strike

Vega Strike allows players to explore a vastly dynamic universe where frontiers collide and you're just a pilot trying to make ends meet. How? That's your decision. Vega Strike is designed as a non-linear gaming experience, where you choose what action you want to take.
Vega Strike features a dynamic trading economy, allowing your character to operate as a merchant. Discover what trade routes bring in the most profit, what commodities make you the most money given your ship's cargo space limitations, accept cargo missions and learn to avoid areas of danger (repairs eat into your profits!).

Genre: Simulation, Flying
License: Free/Open source
Cost: Free
Website: http://vegastrike.sourceforge.net/

66. Thunder and Lightning

Thunder and Lightning

Thunder and Lightning is a futuristic action flight simulator and realtime strategy game that takes place in a large 3D environment. Jump into the pilot seat of your Lightning aircraft and fight against Thunder tanks in a fierce battle for control of the island!
Apart from flight simulators, Thunder&Lightning takes inspiration from (but is not a clone or remake of) the 80's classic Carrier Command. This means that you will find yourself in control of a futuristic carrier with aircraft and amphibious tanks at your disposal. In the long run, there will be multiple Islands to conquer, each with its own defense strategy.

Genre: Simulation, Flying
License: Free/Open source
Cost: Free
Website: http://tnlgame.net/

67. FlightGear

FlightGear

FlightGear is an open-source, multi-platform, cooperative flight simulator developed by the FlightGear project since 1997. Source code for the entire project is available and licensed under the GNU General Public License.

Genre: Simulation, Flying
License: Free/Open source
Cost: Free
Website: http://www.flightgear.org/

68. GL-117

GL-117

GL-117 is an action flight simulator for Linux/Unix and MSWindows. Enter the Eagle Squadron and succeed in several challanging missions leading though different landscapes. Five predefined levels of video quality and an amount of viewing ranges let you perfectly adjust the game to the performance of your system. Joystick, mouse, sound effects, music...

Genre: Simulation, Flying
License: Free/Open source
Cost: Free
Website: http://www.heptargon.de/gl-117/gl-117.html

69. Search and Rescue II

Search and Rescue II

Search and Rescue II is a rescue helicopter simulator for Linux. It features several missions in which the player pilots a helicopter in order to rescue people in distress. There are several scenarios and helicopter models.

Genre: Simulation, Flying
License: Free/Open source
Cost: Free
Website: http://sar2.sourceforge.net/

70. Naev

Naev

Naev is a 2D space trading and combat game, in a similar vein to Escape Velocity. Naev is played from a top-down perspective, featuring fast-paced combat, many ships, a large variety of equipment and a large galaxy to explore. The game is highly open-ended, letting you proceed at your own pace.

Genre: Action, Flying
License: Free/Open source
Cost: Free
Website: http://code.google.com/p/naev/

71. Chromium B.S.U.

Chromium B.S.U.

Chromium B.S.U. is a fast paced, arcade-style, top-scrolling space shooter.

Genre: Arcade
License: Free/Open source/Artistic
Cost: Free
Website: http://www.reptilelabour.com/software/chromium/

72. Glaxium

Glaxium

Glaxium is an OpenGL-based space-ship "shoot-em-up" styled game. It is designed to provide the same feel as the old 2D games of that type, but with 3D for the special effects.

Genre: Arcade
License: Free/Open source
Cost: Free
Website: http://xhosxe.free.fr/glaxium/

73. Danger from the Deep

Danger from the Deep

Danger from the Deep (known as dangerdeep or DftD) is a free, Open Source World War II german submarine simulator.

Genre: Simulation, Navigate
License: Free/Open source
Cost: Free
Website: http://dangerdeep.sourceforge.net/

74. Rigs of Rods

Rigs of Rods

Rigs of Rods is an open source vehicle simulator licensed under the GNU General Public License version 3. What makes Rigs of Rods different to most simulators is its unique soft-body physics: vehicles, machines, objects, etc. are simulated in real-time as flexible soft-body objects, giving the simulation an extremely accurate behavior which entirely depends on the physical construction of the vehicles or objects you create.

Genre: Simulation, Navigate, Flying, Driving
License: Free/Open source
Cost: Free
Website: http://www.rigsofrods.com/

75. Vdrift

Vdrift

VDrift is a cross-platform, open source driving simulation made with drift racing in mind. It's powered by the excellent Vamos physics engine. It is released under the GNU General Public License (GPL) v2. It is currently available for Linux, FreeBSD, Mac OS X and Windows (Cygwin).

Genre: Simulation, Driving
License: Free/Open source
Cost: Free
Website: http://vdrift.net/

76. Ultimate Stunts

Ultimate Stunts

Ultimate Stunts is a remake of the famous DOS-game stunts. Racing in Ultimate Stunts involves some really spectacular stunts, like loopings, corkscrews, bridges to jump over, etc., but the best thing is that you can design your own tracks!

Genre: Simulation, Driving
License: Free/Open source
Cost: Free
Website: http://www.ultimatestunts.nl/

77. Tile Racer

Tile Racer

Tile Racer is a freeware 3D stunt racing game which features realistic car physics and an in game track editor to create new maps to race on.

Genre: Simulation, Driving
License: Proprietary/Closed Source
Cost: Free
Website: http://tileracer.model-view.com/tl/index.php/news.html

78. ManiaDrive

ManiaDrive

ManiaDrive is a free clone of Trackmania, the great game from Nadéo studio, and is an arcade car game on acrobatic tracks, with a quick and nervous gameplay (tracks almost never exceed one minute), and features a network mode, as the original.

Genre: Simulation, Driving
License: Free/Open source
Cost: Free
Website: http://maniadrive.raydium.org/index.php/

79. TORCS

TORCS

TORCS is a highly portable multi platform car racing simulation. It is used as ordinary car racing game, as AI racing game and as research platform.

Genre: Simulation, Driving
License: Free/Open source
Cost: Free
Website: http://torcs.sourceforge.net/

80. Speed Dreams

Speed Dreams

Speed Dreams is a fork of the famous open racing car simulator TORCS, aiming to implement exciting new features, cars, tracks and AI opponents to make a more enjoyable game for the player, as well as constantly improving visual and physics realism.

Genre: Simulation, Driving
License: Free/Open source
Cost: Free
Website: http://www.speed-dreams.org/

81. Trigger

Trigger

Trigger is a free 3d rally car racing game. fun for all the family! you race a sequence of 6 courses, with increasing levels of difficulty. Trigger is highly customisable, and it's easy to add new levels and vehicles.

Genre: Sports, Driving
License: Free/Open source
Cost: Free
Website: http://trigger-rally.sourceforge.net/

82. Armagetron Advanced (Armacycles Advanced in Fedora)

Armagetron Advanced

"A Tron clone in 3D". Armagetron Advanced (Armacycles Advanced in Fedora) is a multiplayer game in 3d that attempts to emulate and expand on the lightcycle sequence from the movie Tron. It's an old school arcade game slung into the 21st century. Highlights include a customizable playing arena, HUD, unique graphics, and AI bots. For the more advanced player there are new game modes and a wide variety of physics settings to tweak as well.

Genre: Action, Driving, Third person
License: Free/Open source
Cost: Free
Website: http://armagetronad.net/

83. GLtron

GLtron

A 3D game inspired by the movie TRON. It's a game for one to four players, the objective is not todrive into a wall.

Genre: Action, Driving
License: Free/Open source
Cost: Free
Website: http://gltron.org/

84. BMExt-GLtron

BMExt-GLtron

BMExt-GLtron is based on GLtron and brings two significal changes.

Genre: Action, Driving
License: Free/Open source
Cost: Free
Website: http://www.protorusz.hu/~bmate/bmextgltron/main.php

85. Extreme Tux Racer

Extreme Tux Racer

Extreme Tux Racer is a downhill racing game featuring Tux, the Linux Penguin. It is a free, open source game.

Genre: Arcade, Sports
License: Free/Open source
Cost: Free
Website: http://extremetuxracer.com/

86. SuperTuxKart

SuperTuxKart

SuperTuxKart is a Free 3D kart racing game, with many tracks, characters and items for you to try.

Genre: Arcade, Sports
License: Free/Open source
Cost: Free
Website: http://supertuxkart.sourceforge.net/

87. CannonSmash

CannonSmash

CannonSmash is a 3D tabletennis game. The goal of this project is to provide a computer game rendition of table tennis that allows the use of the various strategies available in the real game.

Genre: Simulation, Sports
License: Free/Open source
Cost: Free
Website: http://cannonsmash.sourceforge.net/

88. Free Tennis

Free Tennis

Free Tennis is a tennis simulation developed by a former tennis player. Its main feature is realism.

Genre: Simulation, Sports
License: Free/Open source
Cost: Free
Website: http://freetennis.sourceforge.net/

89. Slam Soccer 2006

Slam Soccer

Slam Soccer 2006 is a funny football game in 3D-comic-style - and it's for free!

Genre: Sports
License: Free/Open source
Cost: Free
Website: http://www.bolzplatz2006.de/en/index.php

90. PokerTH

PokerTH

PokerTH is an open source Texas hold 'em simulator for Microsoft Windows, Mac OS X, and GNU/Linux. The game is faithful to the Texas Hold 'em rules and betting system. PokerTH allows for up to ten human players, with computer-controlled players filling in if there are not enough humans. Players can also play against other PokerTH users online.

Genre: Card game
License: Free/Open source
Cost: Free
Website: http://www.pokerth.net/home.html

91. Yo Frankie!

Yo Frankie!

Yo Frankie! is an open video game made by the Blender Institute, part of the Blender Foundation. It is based on the universe and characters of the free film produced earlier in 2008 by the Blender Institute, Big Buck Bunny.

Genre: Arcade, Third person
License: Free/Open source
Cost: Free
Website: http://www.yofrankie.org/

92. Plee the Bear

Plee the Bear

Plee The Bear will be a 2D platform game. As fun as an Earthworm Jim, as beautiful as a Sonic, as cool as a Mario, Plee The Bear wants to be as good as the best platform games created in the 90s

Genre: Arcade, Platform
License: Free/Open source
Cost: Free
Website: http://plee-the-bear.sourceforge.net/index-en.html

93. SuperTux

SuperTux

SuperTux is a classic 2D jump'n run sidescroller game in a style similar to the original Super Mario games covered under the GPL.

Genre: Arcade, Platform
License: Free/Open source
Cost: Free
Website: http://supertux.lethargik.org/

94. Go Ollie!

Go Ollie!

Ollie the Oligocheata is a worm on a mission He is on a mission to bring mouse controlled platforming fun to everyone! The latest in innovative mouse controlled platform gaming featuring a unique fusion of platform and match three gaming mechanics.

Genre: Arcade, Platform
License: Free/Open source
Cost: Free
Website: http://www.charliedoggames.com/?page_id=62

95. Frozen Bubble

Frozen Bubble

Frozen Bubble is a game in which you throw colorful bubbles and build groups to destroy the bubbles. In one-player mode, you must destroy all the bubbles to access the next level. In multi-player modes, the goal is to have your opponent die before you. Local one-player and two-player modes are supported, and networked play is supported for modes ranging from two to five players.

Genre: Arcade, Puzzle
License: Free/Open source
Cost: Free
Website: http://www.frozen-bubble.org/

96. Zaz

Zaz

Zaz is a game where the player has to get rid of incoming balls by arranging them in triplets. The idea of the game is loosely based on games like Luxor, Zuma and Puzzle Bobble. The twists that make Zaz stand out from other games of this type are that the balls have to be picked from the path (insted of being randomly assigned for the player) and that the player’s “vehicle” is also attached to a path which is different from level to level.

Genre: Arcade, Puzzle
License: Free/Open source
Cost: Free
Website: http://www.phuzzboxmedia.com/index.php/games/open-sourced-zaz

97. Amoebax

Amoebax

Amoebax is a cute and addictive action-puzzle game. Due an awful mutation, some amoeba's species have started to multiply until they take the world if you can't stop them. Fortunately the mutation made then too unstable and lining up four or more will make them disappear.
Follow Kim or Tom through 6 levels in their quest to prevent the cute multiplying amoebas to take the world and become the new Amoeba Master. Watch out for the cute but amoeba's controlled creatures that will try to put and end to your quest.
Amoebax is designed with levels for everyone, from children to adults. With the training mode everybody will quickly become a master and the tournament mode will let you have a good time with your friends. There is also catchy music, funny sound effects, and beautiful screens that sure appeal to everyone in the family.

Genre: Arcade, Puzzle
License: Free/Open source
Cost: Free
Website: http://www.emma-soft.com/games/amoebax/

98. Secret Maryo Chronicles

Secret Maryo Chronicles

Secret Maryo Chronicles is an Open Source two-dimensional platform game with a design similar to classic computer games. SMC has computer support to a great degree by using an accelerated Open Graphics Library for the best possible graphic design and stock performance.

Genre: Arcade, Platform
License: Free/Open source
Cost: Free
Website: http://www.secretmaryo.org/

99. Mega Mario

Mega Mario

Mega Mario is a Super Mario Bros. 1 clone. It features everything the original features - with better graphics, higher resolution, smoother movement and new levels. The story of mario and Luigi continues in old-school style.

Genre: Arcade, Platform
License: Free/Open source
Cost: Free
Website: http://www.megamario.de/

100. TuxTyping

TuxTyping

TuxTyping is an educational typing tutor for kids starring Tux, the Linux penguin. This educational game comes with two different games for practicing your typing, and having a great time doing it.

Genre: Educational
License: Free/Open source
Cost: Free
Website: http://tux4kids.alioth.debian.org/tuxtype/index.php