The interface is simple, fresh, simple game, puzzle. But really fun, so you cant move, your level in turn can get 0 stars. To get a star, you have to rack sth. to oh.
Play:
The upper left corner is an example, sliding around the big box, mobile grid, let small patterns he and the upper left corner of the same color, so you pass.
Like a jigsaw puzzle, but he is more fun puzzle game, if find tips you might be able to pass smoothly, or otherwise difficult to oh.