D2X-Rebirth - source port of Descent 2: Counterstrike from 1996
This package installs the shareware version, if you own the full game you can copy the game data to ~/.d2x-rebirth directory (replacing existing files).
To run: Menu -> Games -> Descent 2
To run in a terminal: ~/.d1x-rebirth/d1x-rebirth-rpi -hogdir ~/.d1x-rebirth
To exit: select "Quit" in the game's main menu.