There were so many nice pieces to this! The physics felt pretty good playing on a keyboard, but I think would feel even better with a SNES pad. The wall jumps feel a bit retro-difficult (a la Super Metroid), which isn't necessarily a bad thing when developing for an older system :) I could tell you had big plans for it given all the systems you developed (other folks had mentioned slopes and certainly the cool mode 7 outro). Any plans on developing this further?