TIP: When you find yourself facing a locked door, try going around the back way. There's usually some way to come at the problem from the other side.

TIP: Keep in mind that whenever you go through a roller-coaster sequence and change discs, you are almost invariably going to another island. One way to keep your mapping and your puzzles straight is to avoid switching islands until you have a pretty good idea where everything is and you've pulled every lever and switch you can find.

TIP: On the Boiler Island, try closing doors behind you; you never know what might be hiding in the corner.

TIP: On Jungle Island, turn up the speakers and listen as you touch the wooden eyes. There are sound clues as well as hidden symbols.