You have followed an ancient map to a hidden cave which purportedly contains some kind of mysterious gate. Inside the cave; you find a large metal circle made of concentric rings embedded in the rock wall. You approach the gate hesitantly and touch it. To your astonishment; the metal rings can be rotated. Suddenly; everything goes dark around you. When you regain consciousness some time later; you are no longer in the cave; but in a bizarre new world. Where are you? And how are you supposed to find your way back to the world you know? Only by working together as a team; solving riddles as you travel from world to world; will you be able to make it home safely.