Freecraft has been succeded by Stratagus

FreeCraft is a free cross-platform real-time strategy gaming engine. It is possible to play against human opponents over LAN, internet, or against the computer. The engine can be used to build C&C, WC2, SC and AOE-like real-time strategy (RTS) games (currently only WC2 is supported). It successfully runs under Linux, BSD, BeOS, MacOS/X, MacOS/Darwin and MS Windows.

License: free

Additional System Requirements:

• Zlib
• libpng
• Warcraft II CD or FcMP (FreeCraft Media Project)

• Posix Threads (libc6)
• SDL

The game "Doppelkopf" is a card game for four or more Players similar to "Skat" (like 'xskat').

One game will be played by four players. Doppelkopf originates probably from the mostly in south Germany played game "Schafkopf".

License: free

Additional System Requirements: Gtkmm libraries
gnet library

This is a project to create an entire Doom II IWAD file, compatible enough to play Add-on Doom II wads. Combined with the GPLed doom source code this will result in a completely Free doom-based game.

License: free

Additional System Requirements: A Doom engine port that supports Boom extensions

This is the "finished" version of FreeDroid Classic, a free clone of the classic Commodore C64 Game "Paradroid" originally written by Andrew Braybrook.

The Player controls the 001 Influence Device on a large spaceship where the other robots have gone insane and attack everything. Your job is to clean out the freighter, by either shooting the enemy droids or taking control of them.

License: free

Additional System Requirements: SDL gaming libraries.

• Required: SDL, SDL_image
• Optional: SDL_mixer (for sound!)

FreedroidRPG is an isometric RPG game inspired by Diablo and Fallout. There is a war, and we are losing it. No one really knows why the bots started killing us. Most don't even want to know. The human race is reduced to little more than a few isolated groups of people trying to survive. Somewhere in a place known as Temple Wood, a hero is about to wake up from a long sleep...

License: free

Additional System Requirements:

• SDL
• SDL_mixer >=1.2.1 for sound
• SDL_net

This game is similar to Warlords.
Its objective is to kill all other enemy players. To achieve this you need to explore unknown territory, occupy enemy cities and produce armies.

License: free

Additional System Requirements:

• SDL > 1.2.0
• SDL_image >= 1.2.0
• SDL_mixer >= 1.2.6
• Paragui = 1.1.8 (for version >= 0.3.5)
• expat
• libsigc++-1.2
• Gnu gettext
• Pthread library