Lot's of potential here, though I think a few levels are unnecessarily difficult. Also, the game doesn't adapt to different screen sizes, which made a couple levels way more difficult than they needed to be (such as a platform being off screen).

The game has potential and cool mechanic, but level 3 seems impossible to solve. 

I liked the game simple color and visual, but I think it might be better to make the player more distinguishable from the rest of the level.

The box feels like ice. It just slide across the level. Not sure if this is intended or minor bug.

As said, the game has potential for more level! My only suggestion is to improve the game design.