Today’s app, Apparatus, is quite a fun app for some nice brain exercises. The rules are simple, but the game certainly is not.

All you have to do in order to win the game (or advance to the next level, rather), is to build a machine to perform a given task that can be as simple as moving a few marbles from one point to another. Many levels can be solved in quite a variety of ways, which can be some nice deal for all of you that love open-ended problems!

It’s an editor’s pick! ‘Nuff said, get it now for $2.79!