✓ Fits the first-person shooters cluster, with shooter, first-person shooting and setting scifi
≠ Where it differs: brings horror tension, dark, oppressive atmosphere and strong narrative focus, while skipping post-apocalyptic world
A conventional military shooter wearing Quake's skin: corridor combat with heavy weapons, at its best in the mid-game once the Strogg conversion sequence gives it a hook. Level design is repetitive metal hallways for long stretches, and the squadmates who accompany you do little beyond soaking damage and opening doors.
Where it drifts furthest from Unreal Tournament III: setting.