Great game!
This is a very nice idea, and well executed.
The characters are very cute, I was very motivated to help them on their journey.
The puzzles are mostly very well designed and were lots of fun to solve.
The background music fits very well, but starts to annoy you after some time.
There are some bugs left in the leveldesign:
In one level, for example, the spawnpoint is placed over a moveable platform. If the platform has been moved, the characters fall to their death endlessly on respawning.