Updated: 12/29/2005
Game-FPS
Alien Resurrection , 1,700kb
3D shooter like the movie. [Report a dead link]
http://www.alien-resurrection.com/digizine/htmls/b_gamepc. html

America's Army
Free first person shooter using the Unreal II engine. Illustrates teamwork in the US Army. Beginning in Oct 2002 a free CD will be available at recruiting stations, ROTC Detachments, and other Army events. Has an Airborne Ranger pack. Start off with Basic Training, then go on to choose one of the Training Schools. Then you can do multiplayer Tours of Duty. The US Army plans on updating AA over the next few years with more features and missions. Cards supported: Nvidia Gforce, ATI Radeon cards.

Recommended setup:

Minimum setup: Also at: downloads.thearmygame.com. [Report a dead link]
http://www.americasarmy.com

Corridors of Power
FPS in OpenGL. Particle effects, 32-bit colors, fog, shadows, more. [Report a dead link]
http://www.apgsoftware.co.uk/cop/cop.html

Cube , Rating: 4
3d FPS with advanced features. Requires OpenGL. Looks very good with good support, maps. [Report a dead link]
http://wouter.fov120.com/cube/

Doom 95
Free version of Doom I. 1-4 players. [Report a dead link]
http://www.worldoffreegames.com/factsheet.php?id=843

Doom Legacy
Bots can help you out. Requires the shareware or registered version of Doom. It uses the DOOM.WAD or DOOM2.WAD. Requires 486, std VGA card, 16-bit soundcard recommended. Supports mouse and joystick. For DOS, a VESA2 driver required. For Windows, DirectX 3 required. [Report a dead link]
http://legacy.newdoom.com/

Doom Legacy Launcher
Also at http://www.worldoffreegames.com/factsheet.php?id=892 [Report a dead link]

Doom links
Lots of doom links at these links: [Report a dead link]

Doomsday
DOOM clone with Hexen and Heretic clones. Uses OPENGL. Requires one of the registered or shareware DOOM/Hexen/Heretic games. Requires 3d hardware accellerated graphics card. [Report a dead link]
http://www.doomsdayhq.com/files.php?class=1

OpenQuartz (WIP)
An FPS based on Quake. Still Work In Progress. [Report a dead link]
http://openquartz.sourceforge.net/

Orbit
3d space shooter. [Report a dead link]
http://www.gamehippo.com/category/14_title_4.shtml

Qbism
Free Quake 2 clone which doesn't require full Quake. Requires OpenGL. [Report a dead link]
http://www.planetquake.com/qbism/

Quake 3 Logfile Analyzer , 674kb
[Report a dead link]
http://www.sulaco.co.za/downloads.htm

Quake Forge
Most usable Quake clone. Also has Quake2Forge. [Report a dead link]
http://www.quakeforge.net/

Rangers
FPS freeware game. Still WIP. Military simulation. [Report a dead link]
http://www.playspoon.com/awf/index.php?id=33

Sectors of Death
3d FPS. [Report a dead link]
http://www.gamehippo.com/category/15_title_3.shtml

The Keep
3d game where you defend a castle. [Report a dead link]
http://thekeep.sourceforge.net/

Tropical Storm , 12,000kb
Requires OpenGL-compatible video card and DirectX8. [Report a dead link]
http://www.gamehippo.com/category/15_title_4.shtml

Zdoom
Doom for Win95. Supports: free look up/down, transparency, console, quake-style key bindings, more music formats, jumping, crosshairs. Requires an IWAD from Doom 1.9 or greater. Shareware doom will work but a full version of Doom will work better. [Report a dead link]
http://zdoom.notgod.com/