alien-arena binary package in Ubuntu Bionic s390x

 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 SDL client for Alien Arena.

Source package