This weekend I was playing around with PICO-8 making a little thing for my Anbernic handheld linux retro-gaming console, and since you extended the deadline I actually got something finished-ish.
But... it's a remake of an old LOVE2d 1-hour prototype from a few years ago. I didn't look at the original code (not that it would have been that much help since I was switching from 1-button to 2-button controls). So I don't know if it's something I should enter: still the same idea, just nicer controls and a bit more character (a bobbly body that swings around when you change directions, NPCs to send the mail, and they move stars occasionally).