OpenArena has been discontinued. Similar games include Xonotic, which is free and open source. Other options are Unreal Tournament, Quake, AssaultCube and Red Eclipse. There's no shortage of First-Person Shooters like OpenArena, with more than 25 alternatives for Windows, Linux, Mac, Android and iPhone.
Xonotic is a 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.
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Unreal is a series of first-person shooter video games developed by Epic Games.
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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.
United States
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!
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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.
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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.
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Overwatch is a team-based shooter where heroes do battle in a world of conflict.
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Cube 2: Sauerbraten is a free multiplayer/singleplayer first person shooter, built as a major redesign of the Cube FPS.
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.
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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. Comes in Three Flavors~.
Quetoo is a Free, standalone first person shooter video game based on id Tech2. Our goal is to bring the fun of oldschool deathmatch to a more contemporary platform, and perhaps to a new generation of gamers.
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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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