30 Day D&D Challenge - Favorite Gameworld - Day Four(part 2 or How did they get out of that room anyway?)

In part one of the topic - Favorite Gameworld, I you all hanging as to how the party got themselves out of the room with the twelve doors. 

As you recall we left our intrepid heroes here:

The only door they can open leads to the west for quite a ways then turns north and slopes upward for a long way and then levels out and turns east. This dead-ends on three doors. One to the north they can not open. One to the south opens into a circular room with 12 doors and the east door open into a small alcove. As they check this alcove out a section of wall spins and separates one member of the party from the group. As they check this out four switch places with the one. And then back again. The one then finds a door on the south wall of the hidden space and it opens in the circular room. He goes in, eventually the others follow. Once they have all entered, the door slams behind them. They start checking doors and they all open to the outside with a thousand foot drop below each door like it opens right out into mid-air. As they are pondering what to do next. (At this point we check the time and the game comes to halt for the night.)

So how did they get out? Have you made some guesses as to how they got out? 

Here is a quote from one of the players:

"We found our characters in a round room with twelve doors the first game, and this is were we picked up the second game. The room once again stopped spinning and I randomly started choosing doors again to try and find our way out. The first door I picked led to a frosty sub-zero temperature room. The second, a volcanicly hot room, and then finally I picked the right door and we returned to a familiar north/south corridor where we met up with our two new adventurers. They had picked up on some of the same rumors that we did which led us here in the first place. I believe the we headed north and then west down a corridor with three doors. If I remember correctly I chose to listen to, and then open the last door on the right of the corridor. There was a table with a couple of skeletons. Some strange force animated one of the skeletons but we smashed it quickly. I can't quite remember what happened next, but I think we heard some orcish voices behind a door and then ended up having to run back east and then south or something. We then went to a stairwell that I remembered and I think we went up a level and then discovered a 20x20 storage closet, and then a room with a strange playing board made for three opponents. I believe that we trekked down more levels and then decided to come back up to the area of the storage closet to rest, and then these hairy guys with big teeth came flying through the door of the "game-room". We killed one I believe and then two ran back into the room."

Did you get that? Yeah, each door in that room went to a different* place every time they opened it and I just rolled the odds each time to see if they made it back or if something else happened. The second time around they made the percentage on the 3rd door. *They were all the same the first time as the start of the cycle and after that they were random.