Rob the Robot 2.0 nostalgia boogaloo, lol. Interesting concept with the cards! I think more work could've gone into level design, though. For instance, if you time the play button right you don't actually have to use any cards on level 2, and barely any of the cards on level 4. I think with more polished visuals (probably switching to 2D) and tighter level design (that builds upon itself instead of flipping mechanics on their head) and you'd have a pretty good little puzzle game here.