Unreal Tournament Unreal is a series of first-person shooter video games developed by Epic Games. The series includes: Unreal (1998); Unreal : Return To Na Pali (1999); Unreal... Free Open Source Mac Windows Linux Multiplayer Very fast based movement Add a feature 114 Like
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... Free Open Source Mac OS X Windows Linux BSD PortableApps.com Portable Real time collaboration Add a feature 67 Like
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... Commercial Mac OS X Windows Linux Steam No features added Add a feature 82 Like
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 Integrated Chat Multiplayer Add a feature 18 Like
Cube 2: Sauerbraten Cube 2: Sauerbraten is a free multiplayer/singleplayer first person shooter, built as a major redesign of the Cube FPS. Much like the original Cube, the aim of this... Free Open Source Mac OS X Windows Linux BSD Portable Add a feature 42 Like Discontinued No more updates since Jan 2013 : http://sauerbraten.org/ . 2013, like Alien Arena, noticed discontinued.
Warsow Warsow is a completely free fast-paced first-person shooter (FPS) for Windows, Linux and Mac OS X, set in a futuristic cartoonish world where rocketlauncher-wielding... Free Open Source Mac OS X Windows Linux Web No features added Add a feature 27 Like Discontinued Development has been discontinued, as stated at https://www.warsow.net/forum/thread/17216/1 . Last version, 2.1, released in March 2016, can be still downloaded from the official website.
AssaultCube AssaultCube is a free, multiplayer, first-person shooter game, based on the CUBE engine. Taking place in realistic environments, with fast, arcade gameplay, it's... Free Open Source Mac Windows Linux PortableApps.com Multiplayer Portable Add a feature 29 Like Discontinued No more updates since Nov 2013 : http://assault.cubers.net/ (like Alien Arena, also noticed discontinued)
Unvanquished Unvanquished is a free, open-source first-person shooter combining real-time strategy elements with a futuristic, sci-fi setting. It is available for Windows, Linux, and... Free Open Source Mac OS X Windows Linux Multiplayer Add a feature 16 Like
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... Free Open Source Mac OS X Windows Linux Free to play Multiplayer Add a feature 30 Like Discontinued Development is not stopped but last version, 0.8.8, was released in February 2012.
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... Commercial Windows Multiplayer Single player Add a feature 8 Like
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... Commercial Mac OS X Windows Linux Android iPhone ... Android Tablet iPad Multiplayer Add a feature 5 Like
Blacklight Retribution Blacklight Retribution is a fast paced, adrenaline pumping free to play first person shooter (FPS) based in a futuristic urban warzone. Blacklight Retribution provides... Free Windows Free to play Multiplayer Add a feature 4 Like
Ironsight Ironsight is a free to play 1st person shooter which places you in the footsteps of a warrior fighting for control of the last natural resources on Earth. It is the year... Freemium Windows Destructible maps Dynamic weather Free to play Add a feature 2 Like
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... Free Open Source Mac OS X Windows Linux Portable Add a feature 5 Like
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... Free Open Source Windows Linux No features added Add a feature 7 Like
