This is your first game? Good Job! Nice retro-looking visuals and sounds, and the gameplay is fun! Beat it and got a score of "01102000" at the end. :-)
Maybe you could add gamepad support for your post-jam version?
And sure, I'll add gamepad/control support because it's the way to play this kind of game, but I got used to test the game with keyboard and trying to complete other stuff, made me to forgot that side of the support haha