Use arrow keys to move, down to crouch or dive, SPACE to throw Cappy. Z to uncapture. @triangle5820 for the mario art. @jljr2 for goomba art. @FunnyAnimatorJimTV for the frog and scarecrow and moon and Topper.
Added Topper, smoothed out Cap Kingdom. FYI if you remix click and then press M, don't show X/Y.