This is a very creative concept! Swapping between the different powers and level geometry provided a very interesting puzzle-solving element.
While I was able to grasp the concepts pretty quickly, the popups describing the powers hurt the flow a fair bit on the first level. Considering that it is required for the player to demonstrate they know how the power works in order to unlock the next cartridge, it would help if the popups only appeared once.
Granted, of course, that was only an issue for the first level, being the tutorial. Still, something to keep in mind for the future.
The aesthetics were charming, and the change in the palette for each power helped me remember quickly what power was selected.
Very well done!