I love the jump sound effect :)
Music is also super good, congrats on the art as well.
Gameplay is a bit lacking because of how short the game is, but an enjoyable experience! The sprites for the yellow and red blocks could be more straight forward though! (They don't really scream "I'm gonna kill you!" or "damage you!")
Very cool and the boss is a nice touch.
BUG: When I click credits once the credits are gone I can't go back to main menu. Also thanks for crediting me. You didn't need to but it's much appreciated :D