Alien Arena

Alien Arena
Developer(s)COR Entertainment, LLC
EngineCRX Engine (Quake II engine with ODE)
Platform(s)Microsoft Windows, OS X, Linux, FreeBSD
ReleaseOctober 2004
Genre(s)First-person shooter
Mode(s)Single-player, multiplayer

Alien Arena (initially CodeRED: Alien Arena) is an open-source, stand-alone first-person shooter video 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 somewhat, which allowed the game package to be included in certain Linux distributions, such as Fedora, Debian and Ubuntu.[1]

Since July 2023, Alien Arena is available on the Linux App Store Flathub. Since August 2023, Alien Arena is also available for free on the indie games website itch.io.

  1. ^ License of Alien Arena Content on red.planetarena.org (2013)