The game Tile Drop is as well! Wit! Anyways, watching the trailer of this puzzle game ultimately confused me... but in a really good way. Have a look to see what I mean...

It's a free app, but for those wishing to get a taste before the release, the developer Daniel Wood has made two versions of the game available to play now. The easy version can be found here, while what he called the Derek version (which is a more advanced set of puzzles), can be found here.