Install alien-arena-data by entering the following commands in the terminal:
sudo apt update sudo apt install alien-arena-data
Game data files for Alien Arena
ALIEN ARENA is a standalone 3D first person online death-match shooter crafted from the original source code of Quake II and Quake III, released by id Software under the GPL license. With features including 32-bit graphics, a new particle engine and effects, light blooms, reflective water, hi-resolution textures and skins, and hi-poly models and stain maps, ALIEN ARENA pushes the envelope of graphical beauty rivaling today's top games. . This package installs the data, botinfo, and arena files needed to run Alien Arena.