About 100 Exits:
100 Exits is an ipod / iphone / ipad game app released by Apperleft. It is a free app. Each level involves a room with a door that needs to be opened in order to get to the next room. You need to note the hints and figure out what you need to do to open each door to advance to the next level. You can figure things out for yourself, or see walkthroughs like this one to help you when you get stuck on a level. Also, you can tap on the circular button on the top of the screen that contains a lightbulb marked “TIP”. Alternatively, you have the choice of buying in-app tip packs of various sizes, from 5 to 200 tips per pack. However, the solutions on this site should help you enough to process through the game without spending money on tip packs. If you have further questions please ask them in the comments. Enjoy!