Ancient door

An ancient door is a special door that can be found on ERROR planets. It is an impossible geometry area: if you enter the door from one side, nothing happens. However, if you enter it from the other side, it teleports you to a special chain of areas. To explain how this chain works, we will make up 3 areas: A,B, and C. If you go through a door, it will put the rooms in a random order: for example, C, A, and B. Then, it takes you to area C, which contains a door to go to A at the end, then you go to B. At the end, you get some loot. Sometimes, you will end up with multiple copies of an area: e.g. B,A,C,B,A,K.

Areas
Spike pit: This is a series of wide holes with spikes in them. Some of these spikes are compound traps of multiple spikes, or of spikes and other things

Invisible spike pit: Spike pit with invisible spikes.

Pit: Spike pit with no spikes. The idea of this is for one of these things to happen:
 * The player encounters a Pit room, finds that it is harmless, and then goes into an invisible spike pit room and believes it's the same room, and dies.
 * The player encounters an invisible spike pit, finds that it hurts them, and then dodge the harmless pits in a Pit room.

Ultimate spike pit: Spike pit, but all the traps are compounds of every single trap in the game.

Invisible ultimate spike pit: Ultimate spike pit with invisible spikes.