Alien Arena

AlienArena a free first-person shooter

Alien Arena (initially CodeRED: Alien Arena) is a free, stand-alone first-person shooter computer game.
 Begun by COR Entertainment in 2004, the game combines a 1950s-era sci-fi atmosphere with gameplay similar to the Quake, Doom, and Unreal Tournament series.
 Alien Arena focuses mainly on online multiplayer action, although it does contain single-player matches against bots.  Alien Arena has been released for Microsoft Windows, OS X, Linux, and FreeBSD. While the game’s content is proprietary freeware, prohibiting  commercial re-sale, the CRX engine is open source.  In 2013 the assets license was loosened, which allowed the inclusion in Linux distributions.” source: wikipedia

Built for fraggers by fraggers.
 Alien Arena is a furious frag fest with arenas ranging from the small, to the massive.
With a large built-in player base, it’s never hard to find a good match going on, at any hour of the day.
The community is friendly, as well as prolific. Dozens of maps, models, and various accessories have been created by community members to add on to the game experience.” source:

 You can download the game from the project webpage or install it directly from your distribution repository through package manager.



Transmissions: Element 120

TE120 is a short single player experience set in the Half-Life Universe featuring a gravity defying weapon that allows you to jump buildings and sustain large falls.

The story takes place at a mysterious date & location. Where are you? Why have you been sent?” source: steam description

You can download the game client from the project webpage on steam.



AssaultCube a FREE, multiplayer, first-person shooter

AssaultCube, formerly ActionCube, is a free and open source software first-person shooter video game, based on the Cube engine.
It takes place in realistic environments, with fast, arcade gameplay. Although the main focus of  AssaultCube is multiplayer online gaming, a single-player mode consists of computer-controlled bots.
AssaultCube utilises efficient bandwidth usage, allowing the game to be run with connection speeds as low as 56kbit/s. It can run on older computer hardware as well.
AssaultCube is available for free on Microsoft Windows, OS X, and Linux. The game engine is free software, however parts of the accompanying game media, such as the graphics, are released under non-free licenses.
AssaultCube was designed to be more realistic and team-oriented than Cube while keeping Cube’s distinctive fast-paced gameplay. In comparison to other games, AssaultCube is slower than Quake but faster than Counter-Strike.
There are two different teams in AssaultCube, called the “Cubers Liberations Army” (CLA) and the “Rabid Viper Special Forces” (RVSF).” source: wikipedia

You can download the game client from the project webpage or install it directly from your distribution repository through package manager.

Red Eclipse: A free arena shooter

Fun for everyone, young and old, noob or expert. Available for Windows, GNU/Linux, BSD, and macOS. Parkour, impulse boosts, dashing, and other tricks. A huge amount of mutators and game altering variables. Create maps with other players in realtime co-op edit. Over ten years of active development, and still going!
Red Eclipse is a fun-filled new take on the first person arena shooter, featuring parkour, impulse boosts, and more.
The development is geared toward balanced gameplay, with a general theme of agility in a variety of environments.
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You can download the game client from the project webpagegithub or install it directly from your  distribution repository through package manager.