Alien vs. Predator 2 combines elements, creatures, and settings from the hit movies Aliens and Predator in three unique, interlocking stories. They unfold from the perspective of a young Marine Corporal, a newly-emerged Alien, and a Predator on the hunt. Highly detailed environments, phenomenal effects, and an advanced game engine intensify the gameplay of this first-person shooter adventure.
Literally what it sounds like: a multiplayer map revolving around a giant toilet. Along with this it also has a few minor tweaks like a couple new textures, sprites and sounds. For more information please read the ".txt" file included with the map. All credit goes to the author and to AVP Unknown for sharing. I just shared it further.