
Using it after visiting the Angel/Devil Room will not teleport Isaac to the I AM ERROR room, and will instead merely teleport to the same Angel/Devil Room again. Isaac cannot use this to reach the hidden closet room containing Tainted characters, however. This strategy also works in Home, taking Isaac to an Angel/Devil Room if all rooms have been explored.If it's instead used without exploring any rooms, Isaac will be teleported to the 'starting' room of the floor containing the beam of light up to the next floor. After returning from the Angel/Devil Room, using the Teleport 2.0 again will teleport Isaac to the I AM ERROR room. Using Teleport 2.0 in the Ascent sequence will teleport Isaac to the Angel/Devil Room if all other rooms have been explored.Using Teleport 2.0 to try and visit the I AM ERROR room in the Mausoleum/ Gehenna II floor leading to the Ascent will instead teleport Isaac to the Angel/Devil room again.This allows the player to use this item to access rooms prioritized after the Boss Room without needing to fight Mother. The hole to the Mother fight does not need to be entered.



Ultra Secret Room ( Mirrored World only, even if it wasn't located).The order of types of rooms is predetermined, first available on this list chosen:.When used in a room with enemies in it, Isaac is teleported back into the same room, resetting it.The room that Isaac is teleported into will be touching an explored room, if possible.Normal rooms are prioritized over special rooms, and common special rooms take priority over rarer ones. Teleports Isaac to a room that has not been explored yet.
