The red demon key allows the player to use Hell Time, which slows down time in cost of health. The green demon key, found only in the secret level, produces small sparks which float up, levitating whatever is underneath it.

The set includes seven maps, one of which is secret, and two new Demon Keys, which enhance the Unmaker in different ways. In addition to the original levels, Kaiser released the Outcast mapset in 2005. MAP39: Intro was used for the intro in earlier versions of the TC, but in the last version is unused. MAP36: Doom64 Museum and MAP37: Death Labs function like a small self-contained episode, accessible via the 'PLAY DEMO MAP' menu entry. MAP32: Cat And Mouse (secret exit to MAP38)ĭue to the special nature of MAP38: Hectic (unlocking the jump cheat), this level cannot be accessed via change-level cheat ('IDCLEV38' during gameplay or 'warp 38' at the Doomsday console).MAP31: In The Void (secret exit to MAP35).MAP20: Spawned Fear (secret exit to MAP33).MAP15: Altar of Pain (secret exit to MAP31).MAP09: Outpost Omega (secret exit to MAP34).MAP01: Staging Area (secret exit to MAP32).Though not listed, it is also possible to play the cinematic title map, MAP39: Intro, by typing 'setmap 1 39' in the console. There are also six entirely new levels (marked with an asterisk). This includes the 32 original levels of Doom 64 for the Nintendo 64, although in a slightly different order. Doom 64 TC contains 38 playable levels in total.