Arrow keys to move. That's it? Yeah, that's it indeed. At least for the gameplay. For the editor: -1 for Ground. -2 for Lava. -3 for a Bounce Pad. -4 for Goal -5 for Spawn -S for Save. -L for Load. -R to remove last actions (Hold until you removed what you wanted).
Only 4 sprites! No clones, levels are all drawn with pen! No limits on how much to draw! (5 sprites counting the Thumbnail)