Xonotic is described as 'Free (GPL), fast-paced first-person multiplayer 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' and is a very popular first-person shooter in the games category. There are more than 25 games similar to Xonotic for a variety of platforms, including Windows, Linux, Mac, Steam and Playstation apps. The best Xonotic alternative is Counter-Strike, which is free. Other Xonotic like games are Unreal Tournament, Quake, Red Eclipse and Doom.
Counter-Strike (CS) is a series of multiplayer first-person shooter video games, in which teams of terrorists battle to perpetrate an act of terror (bombing, hostage-taking, assassination) and counter-terrorists try to prevent it (bomb defusal, hostage rescue).
Unreal is a series of first-person shooter video games developed by Epic Games.
Quake is a classic first-person shooter game that revolutionized the genre with its fast-paced action and innovative multiplayer modes. Originally released in 1996, it continues to be a beloved title among gamers.
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.
I like both. Red Eclipse offers acrobatic, parkour-like gameplay options.
Doom is a science fiction horror-themed first-person shooter video game in which players assume the role of a space marine, popularly known as "Doomguy", who must fight his way through the hordes of invading demons from Hell.
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 addictive and fun!
Cube 2: Sauerbraten is a free multiplayer/singleplayer first person shooter, built as a major redesign of the Cube FPS.
Nexuiz was originally developed by Lee Vermeulen and Forest ‘LordHavoc’ Hale, who started Alientrap in the summer of 2002. The goal of the project was to create a high quality first person shooter that could be played freely across all platforms in one package: PC, Mac, and...
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 pigs and lasergun-carrying cyberpunks roam the streets.
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. There are 17 unique player models to choose from and 12 weapons.
Urban Terror started as a realism based "total conversion" mod for Quake III Arena. Nowadays, Urban Terror is played using the free, stand-alone, ioquake3 engine modified, which doesn't require Quake III Arena, in addition to being an add-on to id Software's...
A free-to-play, fast-paced multiplayer shooter that features player-controlled portals. It takes the FPS genre to a new dimension with portal mechanics, delivering high-flying, multi-dimensional combat. IGN describes Splitgate as “Halo meets Portal".
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Xonotic is inspired from UT. Its awesome and it has most similarities.