A DOOM 2 mod that requires GZDOOM.

There is a dimension, a dimension full of nonsense and surrealism. It is a place where crates are out to kill you, and a place where logic jumps off a bridge. A journey into a wondrous land of ludicrosity, your next stop: Beyond Reality! This WAD is playable on GZDoom, and Zandronum.

ZDoom forum thread with download: https://forum.zdoom.org/viewtopic.php?t=33505