This is very nice! A simple one input game with airtight presentation. The only gameplay issue is the difficulty went from 1 to Battletoads real quick, which I remember from Discord being an engine issue? Either way, I'd recommend uploading a mobile port to your page if that's something you can make (though I don't think ZUN lets us upload to itunes/play store so fair warning).

Also I think having spacebar as a move up or down button would work well since click already does that.

It reminds me to the Animaniacs console game!!! Really cool!

Crazy starting screen. Who did that?