Users who own this game also own:

Marathon
Marathon
Star Wars: Dark Forces
Star Wars: Dark Forces
Marathon 2: Durandal
Marathon 2: Durandal
Marathon Infinity
Marathon Infinity
Quake
Quake

Users who love this game also love:

System Shock 2
System Shock 2
The House of the Dead 2
The House of the Dead 2
The Ultimate Doom
The Ultimate Doom
The Revenge of Shinobi
The Revenge of Shinobi
Halo 2
Halo 2