MAP15: Tricyclic Looper (BTSX: Episode 1)

Tricyclic Looper is the fifteenth mission of the officially-supported DooM II mod BTSX: Episode 1, designed by Mechadon. Its name was changed to Tesselation Cycle in the official release for no apparent reason. It uses the music track "| Quicksilver," composed by James Paddock. It possess a par time of 5:45. Although it normally exits to MAP16: Get Out of My Stations II (called Waiting II in the official release), it has a secret exit that takes the player to MAP31: Optical Hopscotch (called Defenestrator in the official release).