Arrow keys to move, up arrow to jump, space to spin, Z to shoot fireballs with the fire flower, run at full speed for a bit to dash, and press space to enter levels. (There is only 1 level and it's unfinished.) Just to be clear, I allow advertising on my projects.
I decided to remake the Mario sprite into my own style because i wanted to show my pixel art skills. It may not be too good though.