You, the machine, and an infinite metallic world to explore one screen at a time. Each level is structured in similar fashion with puzzles to solve that unlock the main exit button. You�ll usually find a map in the room to your right as the level begins, and it marks the location of clues you�ll need to help you figure out how to unlock the exit. A coordinate system helps to navigate the massive world, and without it you could literally move from room to room until you passed out from exhaustion. The coordinates actually play a big part in solving the game�s riddles, so if you�re stuck, just look at the room number.