Unreal Tournament

Unreal is a series of first-person shooter video games developed by Epic Games.

Free Open Source Mac OS X Windows Linux Mac

Quake

Quake is a series of first-person shooter video games released by id Software. In the game, players must find their way out of various maze-like, medieval environments while battling a variety of monsters using a wide array of guns.

Commercial Mac OS X Windows Linux Steam

Xonotic

Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux. The project is geared towards providing addictive arena shooter gameplay which is all spawned and driven by the community itself.

Free Open Source Mac OS X Windows Linux BSD

Cube 2: Sauerbraten

Cube 2: Sauerbraten is a free multiplayer/singleplayer first person shooter, built as a major redesign of the Cube FPS.

Free Open Source Mac OS X Windows Linux BSD

Red Eclipse

Red Eclipse is a fun-filled new take on the first person arena shooter, built as a total conversion of Cube Engine 2, which lends itself toward a balanced gameplay, with a general theme of agility in a variety of environments.

Free Open Source Mac OS X Windows Linux BSD

OpenArena

OpenArena is a community-produced deathmatch FPS based on GPL idTech3 technology. There are many game types supported including Free For All, Capture The Flag, Domination, Overload, Harvester, and more.

Free Open Source Mac OS X Windows Linux

Nexuiz Classic

Nexuiz was originally developed by Lee Vermeulen and Forest ‘LordHavoc’ Hale, who started Alientrap in the summer of 2002.

Free Open Source Mac OS X Windows Linux

Overwatch

Overwatch is a team-based shooter where heroes do battle in a world of conflict. Overwatch feature squad-based combat with two opposing teams of six players each.

Commercial Windows

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.

Free Open Source Mac OS X Windows Linux

Alien Arena

alien arena is a free and opensource first-person shooter game that combines a 1950s-era sci-fi atmosphere with gameplay similar to quake , https://alternativein .

Free Open Source Mac OS X Windows Linux BSD

Painkiller

The game is inspired by such classic titles as Quake and Doom, with the emphasis on killing large numbers of monsters. The game is divided into five chapters, each about five levels long.

Commercial Windows

Digital Paint: Paintball 2

Digital Paint: Paintball 2 is a Paintball game that started out as a mod for quake 2 but then took on a life of its own as an open source fps game with a global player and clan management system.

Free Open Source Windows Linux

Serious Sam

Serious Sam is a first-person shooter video game series that follows the adventures of protagonist Sam "Serious" Stone and his fight against the forces of the notorious extraterrestrial overlord Mental who seeks to destroy...

Commercial Mac OS X Windows Linux Android iPhone Android Tablet iPad

Freedoom

Freedoom is a WIP a complete free content game based on the Doom engine. It's not an engine, but it's replacement game data with entirely original content, Compatible with a majority of game mods made for Doom.

Free Open Source Mac OS X Windows Linux

Uebergame

Übergame is a free open source, realism like, multi-purpose, multiplayer, casual, first-person-shooter game.

Free Open Source Windows Linux

PanQuake

a quick Quake sourceport hack by Aardappel This sourceport has one most significant feature: a "panorama" mode, allowing you to see 360 degrees around.

Free Open Source Windows

LawBreakers

LawBreakers is upcoming class-based first person shooter game. Developed by Boss Key Inc.

Commercial Windows Playstation Xbox