This is a free online first person shooter. Every map in Project Blackout is carefully crafted to give operators an immersive experience. With realistically skinned models and destructible environments, Project Blackout raises the bar for immersion in MMO shooters.
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.
Smokin' Guns’s codebase is free and open source software, distributed under the terms of the GPL; it is built upon ioquake3, an upgrade of the original Quake III engine. The artwork and other media are licensed under a proprietary non free license.
Urban Terror™ is a free multiplayer first person shooter developed by FrozenSand, that does not require Quake III Arena anymore. It is available for Windows, Linux and Macintosh. The current version is 4.1.
America's Army is a series of video games and other media developed by the United States Army and released as a global public relations initiative to help with recruitment. America's Army was conceived by Colonel Casey Wardynski and was managed by the U.S. Army's Office of Economic and Manpower Analysis at the United States Military Academy. Wardynski envisioned "using computer game technology to provide the public a virtual Soldier experience that was engaging, informative and entertaining.
Nexuiz is a FPS with thirteen weapons, 24 official maps and over 240 community created maps, as well as 15 player models. The graphics in Nexuiz use coronas, the bloom shader effect, Realtime World and Dynamic Lighting and shadowing[clarification needed], 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.