Doodle Jump is indeed, some pretty addicting stuff.
Doodle Jump's gameplay consists of your little "doodler" jumping as high as he can go. It's a matter of how steady you can tilt your trusty iPod, and a matter of balance as well. There are several levels as well as unlockable levels, which almost always have a theme (mostly relating to a holiday). None the less, there is indeed some decent variety. The gameplay is simply, fun, and ultimately immersive. The game itself isn't deeply complex, but once you play this tricky little devil, you'll be happy to return to its realms. Beware though: Prepare to be occupied for quite a while. I guess that's basically the only true flaw to Doodle Jump. Otherwise it's a load of fun.