[[Image:MerkaShop.png|right|thumb|100px|Merka's Shop]]
There are several rooms with fixed layout and special properties which appear randomly through GC 2-5. The first three special rooms will be generated only once per game (with the exception of those preserved by [[Ghost|bone files]]), the next two can appear multiple times.
* '''[[Dwarven Minefield]]''' - A large room filled with mines and valuable items. No creatures spawn in this room, although they may wander in and set off a chain reaction of explosions. It is very important to walk carefully through this room and use some sort of trap detection, or to have loads of fire resistance. The rooms on the same floor as the minefield are larger than average.