How do you beat level 30 on 100 floors

To beat level 30 on the 100 Floors App, set the clock to the current time on your phone, and then touch the switch.

Another tricky level is level 40, to pass that level, you must turn the volume on your phone all the way down!

100 Floors has reached number 1 on the Top Free iPhone Apps Chart. The most popular paid app is iTranslate.

According to Time Magazine, the best iPhone game apps of all time include Angry Birds, Scrabble, Doodle Jump, Plants v. Zombies, Cut the Rope, Fruit Ninja, Pictureka, Wurdle and GeoDefense Swarm.

Updated on Friday, June 01 2012 at 04:46PM EDT