I found the mechanics pretty interesting, and the game was fun to play. I like how you can bring the goal to you instead of going yourself to it.
I think I found a bug though, as on the last level I managed to squish myself againt the ceiling while having the "right" control, go right, collect "left" control and boom. So, I think you could tweak platform behavior to avoid such things when they are not desired.
Also, moving background messed with my perception, I'd prefer a static one.
Nonetheless, nicely done!