SlackBuildsOrg/games/unvanquished

unvanquished (FPS/RTS Game - Aliens vs. Humans)

Unvanquished is a fast-paced, futuristic FPS with RTS elements,
pitting technologically advanced humans against hordes of highly
adaptable aliens. The player can choose from either team, providing
a fresh gameplay experience on both sides of the conflict.

Note: this package sets the sysctl variable 'vm.mmap_min_addr' to 65536.
For more information, see:
https://sysctl-explorer.net/vm/mmap_min_addr/
https://wiki.debian.org/mmap_min_addr