"Welcome, traveler! There are many dungeon keepers out there.
They all have their portals leading to here- well, most of them,
anyway. Choose a door! Each one has ten more doors, leaqding to one
dungeon. When they are all full and another dungeon pops up... We make
a new portal door!"
There are ten doors, and therefore 100 dungeons- or at the least, 91
doors. Which door?
You find youself facing even more doors. There is writing on the wall.