Of course the graphics aren't the most sophisticated in the jam and it's a bit of a bummer without music, but it has solid gameplay and the level design is good. Nice touch to make the stages only scroll horizontally OR vertically, like many NES games of this genre. I would suggest polishing the hit detection a bit more, especially the sine wave ghosts and the big guys in the castle can often hit you even though the visible sprites don't overlap. Otherwise pretty good game.