Now, you're thinking with Pushmo.
In this game you play as a big sumo wrestler cat named Mallo. The game makes more sense if you don't think about this. His objective in the game is to save children that have been trapped in playground equipment called Pushmo, by pushing and pulling at the structures to get to the top and save the kid. Story-wise, this game reads like a Silverstein book, but gameplay-wise this game is up there with other puzzle greats such as Portal or Pid. There are 250 levels to complete in story mode, BUT there is a feature called Pushmo Studio that extends the game even more by allowing you to create your own Pushmo. Overall, this game is a great addition to your library, and it can be yours for 7 bucks.