Kube Keeper comes from Jeffrey Supit. It's a sokoban puzzle. The object is to push the blocks one-at-a-time onto the spots. Then pick up some stars and get to the exit.
Other Good Sokoban Puzzles
A Good Snowman is Hard to Build Charming
Go to Gold - superb
Go to Gold 2 - I hope a third version comes out.
Push Box Sokoban
Boxed In - loved this. First in a series of 4.
BoxWorld - awesome. I still remember struggling through levels 26 and 35 for days.
Paper & Light
Square Push Square
Test Chamber - brilliant
Duck Roll surprisingly very good
Color Labyrinth - excellent