I liked the overall idea but as mentioned in other comments it is a bit too short. Also, I think a mechanic to maybe see a preview how things would change after swapping would have been a nice addition. Good work!
Thank you, if all this positive feedback makes me wanna come back to the game I'll look into making some preview.
But before I maybe do that I'd need to feel that I can actually come up with more levels, without resorting to the same old puzzle.
