GNU Backgammon

GNU Backgammon (gnubg) is for playing and analysing backgammon positions, games and matches. It's based on a neural network. In the past twelve months it has made enormous progress. It currently plays at about the level of a championship flight tournament player. Depending on its parameters and its luck in recent games, it rates from around 1900 to 2000 on FIBS, the First Internet Backgammon Server -- at its strongest, it ranks in the top 5 of over 6000 rated players there) and is gradually improving; it should be somewhat stronger than this when released. Since almost all of the CPU time required during supervised training is spent performing rollouts, and rollouts can easily be performed in parallel, it is hoped that users will be able to pool rollout results and collectively train it to a level stronger than any individual could obtain.

download here:   http://www.gnubg.org/index.php?itemid=22

Cube 2: 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.

The engine supporting the game is entirely original in code & design, and its code is Open Source (ZLIB license, read the docs for more on how you can use the engine).

dot3 labs is a company started by the creators of Sauerbraten that offers commercial support.

Authors, feature list and more: see the reference documentation or the wiki.

download here:   http://cubeengine.com/files.php4

Neverball

Tilt the floor to roll a ball through an obstacle course before time runs out. Neverball is part puzzle game, part action game, and entirely a test of skill.
Also found here is Neverputt, a hot-seat multiplayer miniature golf game, built on the physics and graphics engine of Neverball.
Neverball and Neverputt are both known to run under Linux, Win2K/XP, FreeBSD, and Mac OSX. Hardware accelerated OpenGL is required. A 500MHz processor is recommended.

download here:   http://neverball.org/download.php

Frozen Bubble

Colorful 3D rendered penguin animations, 100 levels of 1p game, hours and hours of 2p game, nights and nights of 2p/3p/4p/5p game over LAN or Internet, a level-editor, 3 professional quality digital soundtracks, 15 stereo sound effects, 8 unique graphical transition effects, 8 unique logo eye-candies.

You really need this game.

download here:    http://www.frozen-bubble.org/downloads/

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. Other similar games just advertize the "free" concept to sell you premium accounts. We don't. Servers and bandwidth will be donated by sponsors.PlaneShift is made by a group of RPG enthusiasts and not by a commercial company. This allows us to expand the game wihout any constraint or limitation.PlaneShift is Open Source for the client and server code, so everyone can contribute to its development!

download here:   http://www.planeshift.it/download.html

Hexen II: Hammer of Thyrion

In 2000, Raven Software released the source code to their class based shooter game Hexen II and its multiplayer extension HexenWorld. Since then, there has been some source ports of this game, such as the now discontinued Anvil of Thyrion project, but nothing has been done for Linux since the beginning of 2002.

The Hammer of Thyrion project is a cross-platform source port effort: We continue the development for Linux, BSD and Mac OS X people, with continued support for Windows users as well. Many bugs are fixed and even new features are added: New sound modes, improved mouse handling, improved video modes, OpenGL glows and more. You can go to our project page for more information.

download here:   http://uhexen2.sourceforge.net/

Unles: Lunar Expedition Simulator

The Unmanned Lunar Expedition Simulator is a small 3D (OpenGL) game in which you control an unmanned moon vehicle. It is a two-player game that may be played either against the computer or against another player on the internet. There are two game modes: a racing game and a death-match game.
Technical stuff: The game uses rigid-body-dynamics for control of vehicle movement. It has a particle system based gun, 3D audio, and an online high-score list.

download here:   http://unles.sourceforge.net/download.html

TORIBASH

Toribash is an innovative fighting game based on the physics sandbox model where YOU design the moves! Join us today, and pit your skills against other players all over the world.
Earn Toricredits by winning matches, then customize your character in the store! Trade items with other players. Win prizes in weekly tournaments. Climb the rankings. Earn your own Black belt. Better still: be one of the few who make it to 10th Dan!
Toribash is Addictive! Try Wushu, Sumo, Kick Boxing, Sambo, Swords, Judo and more. Create fighting movies and post them on YouTube. Watch other players fight. Chat with them. Defeat them!
Most of all: IT'S FREEWARE!

download here:   http://www.toribash.com/downloads.php

TrackMania Nations

A free game in the truest sense of the word, TrackMania Nations Forever lets you drive at mind-blowing speeds on fun and spectacular tracks in solo and multiplayer modes. Nations Forever will offer a new "Forever" version of the Stadium environment, a solid solo mode and 65 brand new, progressively difficult tracks. TrackMania Nations Forever will unite an even larger number of players than the original Nations thanks to its engaging multiplayer modes, innovative online functions and revolutionary interactivity between players.

TrackMania Nations Forever will offer a new "Forever" version of the Stadium environment, a solid solo mode and 65 brand new, progressively difficult tracks. TrackMania Nations Forever will unite an even larger number of players thanks to its engaging multiplayer modes, innovative online functions and revolutionary interactivity between players.

For TrackMania Nations Forever, Nadeo studio chose to take advantage of the PC's capacities as a gaming, creative and communications platform in order to allow a greater number of players to share a unique gaming experience.


Features :

 A completely free game.

A captivating solo mode with 65 brand new tracks.

 Solo and team based multiplayer modes. Join millions of players online on the TrackMania servers.

 One complete TrackMania environment: Stadium ‘’Forever’’.

 An in-game editor to create your own tracks, video studio to realize your own movies and a paint shop to customize your vehicles.

 Official ladders for solo and multiplayer.

 Compatible with TrackMania United Forever (profile and multiplayer servers).

download here:   http://www.trackmania.com/index.php?rub=downloads

True Combat Elite

TrueCombat:Elite (TCE) is a modern world total conversion of the free, popular, stand-alone third-person shooter, Wolfenstein: Enemy Territory. That is, TCE is an entirely free game, made by gamers, for gamers.

TCE was developed by GrooveSix Studios and Team Terminator. While Team Terminator is known for the famous Q3 based TrueCombat series, GrooveSix Studios was initiated by retired Team Terminator co-founder Coroner to develop a Return to Castle Wolfenstein modification that was never released.

TrueCombat:Elite Now, the most important question: "What can I expect from TCE?"

TCE is a tactical-team shooter, set up in a modern-world environment. 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. It was reported that some members of the Unit were once with the Special Op forces, but the lure of money was strong.

You say to yourself, "Yet another terror counter-terrorism shooter. Why the hell should I try it? Been there, done that!"

We say: Because you don't have to spend a cent (it's totally free) and it features:


tactical-teamplay oriented, modern-world combat simulation
realistic weapon behavior simulation
iron sight aiming system, no crosshair
sophisticated ballistic simulation including multiple-layer object penetration
professional mode: 1-life, short-timed, objective driven scenarios in realistic environments
independent minimods: objective, bodycount and capture the flag
balanced, team specific set of real-world weapons (Beretta 92, Glock 19, Ump45, Mac-10, M4, Ak-47, and much more)
rich, deluxe graphics, based on high-resolution digital-camera shots and HDR lighting
lag compensation, client-side bullet prediction, punkbuster support
immersive and lethal, fast-paced action


download here:   http://www.truecombatelite.com/tce.php?page=downloads

Tremulous

Tremulous is a free, open source game that blends a team based FPS with elements of an RTS. Players can choose from 2 unique races, aliens and humans. Players on both teams are able to build working structures in-game like an RTS. These structures provide many functions, the most important being spawning. The designated builders must ensure there are spawn structures or other players will not be able to rejoin the game after death. Other structures provide automated base defense (to some degree), healing functions and much more...

Player advancement is different depending on which team you are on. As a human, players are rewarded with credits for each alien kill. These credits may be used to purchase new weapons and upgrades from the "Armoury". The alien team advances quite differently. Upon killing a human foe, the alien is able to evolve into a new class. The more kills gained the more powerful the classes available.

The overall objective behind Tremulous is to eliminate the opposing team. This is achieved by not only killing the opposing players but also removing their ability to respawn by destroying their spawn structures.

download here:   http://tremulous.net/files/

Alien Arena

Do you like fast paced deathmatch? How about rich, colorful, arcadelike atmospheres? How about...retro Sci Fi? Then you're going to love what Alien Arena has in store for you! This game combines some of the very best aspects of such games as Quake III and Unreal Tournament and wraps them up with a retro alien theme, while adding tons of original ideas to make the game quite unique.

Alien Arena is a fast paced, furious frag fest with arenas ranging from the small, to the massive. With a large built-in player base, it's never hard to find a good match going on, at any hour of the day. The community is friendly, as well as prolific. Dozens of maps, models, and various accessories have been created by community members to add on to the game experience. The CRX engine that powers Alien Arena has received very signifigant upgrades in recent releases, resulting
not only in stunning new visuals, but vastly increased performance as well.

download here:   http://icculus.org/alienarena/rpa/aquire.html

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).
Features in a nut-shell:

    * It's FREE.
    * Open source, available under a zlib-like open source license.
    * Low latency, it can even run across a 56Kbps connection!
    * Light-weight size, only 40MB to download, plus additional maps average 20KB each!
    * With the correct settings, it can run on old hardware (Pentium III and above).
    * Officially runs on most major systems, and maybe even some non-major ones?
    * Has a built in, in-game map editor to help players create their own maps and allows for
      co-operative editmode in realtime with others!
    * Features a single-player bot system.
    * Supports recording of your game by the "demo" system.
    * Contains 12 multiplayer game modes, including: Deathmatch, Survivor, Capture the Flag, Hunt the Flag, Keep the Flag, Pistol Frenzy, Last Swiss Standing & One-Shot One-Kill (plus team versions of these modes).
    * Comes pre-packaged with 19 different maps!

download here:  http://assault.cubers.net/download.html

Nexuiz

Nexuiz is a fast paced 3d deathmatch game project created online by a team of developers called Alientrap. It is available for download for Windows, Mac, and Linux (all the same archive).
The first version was released May 31st 2005, released entirely GPL and free over the net, a first for a project of its kind. Since then it has been downloaded over 1.5 million times, and the game is still being updated and developed, currently at version 2.5 and new releases being developed.

download here:   http://www.alientrap.org/nexuiz/downloads

Open Arena

OpenArena is a Free Content project. Its goal is to create new, original media while providing a stand-alone multiplayer game in the process.

The current supported gametypes are as follows:
- Free for All
- Team Deathmatch
- Tournament
- Capture the Flag
- One Flag Capture
- Overload
- Harvester
- Elimination
- CTF Elimination
- Last Man Standing
- Double Domination
- Domination

Instant Gib and All Rockets weapons modes are supported.

Simulated players, or "bots" are also available for your personal pulverizing pleasure.

download here:   http://openarena.ws/download.php

WolfQuest

An immersive, 3D wildlife simulation game, WolfQuest challenges players to learn about wolf ecology by living the life of a wild wolf in Yellowstone National Park.

The single-player game consists of two episodes. In the first episode, Amethyst Mountain, players explore the wilderness, hunt elk, and encounter stranger wolves in a quest to find a mate. In the newly released second episode, Slough Creek, players find a den, establish a territory, raise pups and defend them from predators such as coyotes and grizzly bears. Online multiplayer games let up to five players form a pack to explore and hunt together.

The WolfQuest experience goes beyond the game with an active online community where you can discuss the game with other players, chat with wolf biologists, and share artwork and stories about wolves.

download here:   http://www.wolfquest.org/

Super Fighter

Super Fighter is a fast paced versus fighting game for the PC. Its unique design inspired several other fighting games which would later also appear for the PC, as well as for videogame consoles such as the PC Engine and the Super A'can.
download here:   http://www.superfighter.net/

Brutal Chess

Brutal Chess features full 3D graphics, an advanced particle engine, and several different levels of intelligent AI, inspired by the once popular "Battle Chess" released by Interplay circa 1988.

download here:   http://sourceforge.net/projects/brutalchess/

TORCS

TORCS, The Open Racing Car Simulator 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. It runs on Linux (x86, AMD64 and PPC), FreeBSD, MacOSX and Windows. The source code of TORCS is licensed under the GPL ("Open Source"). You find more information about the project in the menu bar on the left. If you need help have a look at the FAQ first. You can contact us on the torcs-users mailing list (you need to subscribe to use it).
TORCS features more than 50 different cars, more than 20 tracks, and 50 opponents to race against. Your can steer with a joystick or steering wheel, if the device is supported by your platform. It is also possible to drive with the mouse or the keyboard. Graphic features lighting, smoke, skidmarks and glowing brake disks. The simulation features a simple damage model, collisions, tire and wheel properties (springs, dampers, stiffness, ...), aerodynamics (ground effect, spoilers, ...) and much more. The gameplay allows different types of races from the simple practice session up to the championship. Enjoy racing against your friends in the split screen mode with up to four human players.
TORCS was initially written by Eric Espié and Christophe Guionneau, substantial parts have been added by other contributors (have a look into the "Credits" section for details). The TORCS source code is licensed under the terms of the GNU General Public License (GPL), most of the artwork is licensed under the Free Art License, have a look into the packages for details about copyright holders and the licensing.

download here:   http://torcs.sourceforge.net/index.php?name=Sections&op=viewarticle&artid=3

Frets on Fire

Frets on Fire is a game of musical skill and fast fingers. The aim of the game is to play guitar with the keyboard as accurately as possible.
download here:   http://fretsonfire.sourceforge.net/

VDrift

VDrift is a cross-platform, open source driving simulation made with drift racing in mind. The driving physics engine was recently re-written from scratch but was inspired and owes much to the various phisics engine. It is released under the gpl.v2. It is currently available for linux mac and Windows.

This game is in the early stages of development but is already very playable. Currently the game features:

• Simulation-grade driving physics
• Tracks based on famous real-world tracks
• Cars based on real-world vehicles
• Competition against AI players
• Mouse/joystick/gamepad/wheel/keyboard support
• and more

download here:   http://vdrift.net/

FlightGear

FlightGear is a free flight simulator project. It is being developed through the gracious contributions of source code and spare time by many talented people from around the globe. Among the many goals of this project are the quest to minimize short cuts and "do things right", the quest to learn and advance knowledge, and the quest to have better toys to play with.

download here:   http://www.flightgear.org/

Driving Speed 2

Driving Speed 2 is a free high quality racing game for your PC. Choose from four high powered V8 muscle cars and race against up to 11 computer controlled opponents on two touring car circuits. This game has realistic graphics, realistic car physics and performance, high quality sound and AI. Play against your friends over a LAN or internet with 8 player Multiplayer. Send your fastest lap records to the online lap records where you can see your times against players from all around the world.

download here:   http://www.wheelspinstudios.com/drivingspeed2/