Aliens versus Predator Theme Patch
From DoomWiki.org
Aliens versus Predator Theme Patch is a gameplay mod for Doom based on the creatures and characters from the Alien and Predator franchises. It has graphic and sound replacements such as Weyland-Yutani troopers, Aliens, and Predators. It also includes new weapons from the movie Aliens such as pulse rifle, smartgun and the flamethrower.