This isn't a normal world. It's a nightmare. And nightmares, as we all know, play by their own infuriatingly illogical rules. The most important rule to understand is the "Looping Pitch" phenomenon. What it is: When our hero, Sam, walks off the right side of the screen, he immediately reappears on the left. Walk off the left side, and he'll pop back in from the right. Why it happens: Dream physics. Don't think about it too hard, or you'll attract the Logic Gremlins. They throw wides. Constantly. There’s eight changeling levels (in general they get harder, but that’s just my opinion)