

This can be used to find a Boss Room door leading to what would be an empty space (though this may find Mr. Red Key can create rooms adjacent to most Boss Rooms in The Void, including Delirium's room.Isaac also can't create Red Rooms adjacent to the Shop on this floor either.Isaac can enter Hush's room from this crack, but going the other direction will lead him to the Entrance Portal room.from branching off one of the Treasure Room.

This Red Room can only be created when Isaac is in another Red Room adjacent to it, i.e. Red Key can create a room adjacent to Hush's room in the top right where the room that leads to The Void usually generates.Red Key can't create a room adjacent to the Boss Room on most floors, with some exceptions:.This can be used to discern their locations by finding walls that don't have red door outlines that would otherwise be valid Red Room spots. Red Key can't overwrite Secret Rooms or Super Secret Rooms.More Options' and Pay to Win's combined double item Treasure Rooms with a Shop Restock Machine.Pay to Win's Shop Restock Machine Treasure Rooms.More Options' double item Treasure Rooms.Tainted Keeper's Shops, which can additionally contain items from the Boss and Treasure Room pools, and offer trinkets for sale.Special Red Rooms can be versions that aren't normally encountered without a specific item or character.Normal rooms will not show the red outline if they are at the map's boundary. The I AM ERROR room door can only be created while already inside a Red Room.

