Brings back memories of early gaming days of yesteryear.
I do love the Mario 2 floaty hover physics and you also have some neat stuff going on with the different mechanics and switching between palettes.
Might just be my touchpad, but for me the firing was inconsistent and unreliable at times but I may come back for another try with my USB mouse and hope it plays better with that.
Regardless, a cool entry. Good job :)