Akalabeth: World of Doom (1979), a direct predecessor of the landmark Ultima series, is now available for Windows, Mac, and Linux, as a gift to the world of gaming from Lord British (Richard Garriot) and GOG-com!
Zandronum is one of the few ZDoom based ports with stable multiplayer support! Open Source for Windows, Linux and Mac.
Zandronum modernizes Doom, support of the OpenGL renderer. OpenGL, based from GZDoom, gives the environment a new fresh new look and also has support for 3D objects. Additionally, Zandronum has improved multiplayer support and dynamic servers. Zandronum supports up to 64 players, and clients can freely join any game servers at any time without having to wait for the host to launch a connection – – similarly in ZDoom. Also, Zandronum has an abundance of game modes. Such game modes can be a simple cooperative game, invasion, deathmatch, or maybe capture the flag with four teams. Zandronum is always active in both developments, community events, and the games hosted on various servers.
UPDATE:There is a new version of the game, visit the official site.
THE DARK MOD 2.0 is a free, first-person stealth game inspired by the Thief series by Looking Glass Studios. It recreates the essence of the original Thief games on a more modern engine. Both a game and a mission-creation platform, The Dark Mod allows players and mappers alike to enjoy missions in a gothic steampunk universe.
The Dark Mod was officially released on October 17th, 2009. As of October, 2013, TDM 2.0 is now completely standalone, and no longer requires Doom3.
This is a collection of old classic DOS FPS games. These are the shareware versions and need an emulator like DosBox to run.