Alien vs. Terminator vs. Predator is a mod for shareware Wolfenstein, made by Dr. Von Loon. It was released on January 23, 2007 via Doom WAD Station and never hosted on the Wolfenstein 3D Dome, though it was mentioned in the news listing.
The mod features new graphics and sounds using a sci-fi imagery, most likely inspired by the movies referred to in the title.
No new maps are featured. It is a port-friendly release, as it works in both DOS, SDL and OpenGL, which was the engine used for creating screenshots and posts about the mod.