You've noted that this is unfinished so I'll just try to comment on what's here. I like the kind of neon sign look, and the not-quite-pacman-ghost little jelly dudes. There doesn't seem to be any kind of a goal implemented yet, but from what I can gather it looks like you're meant to work together with the three little dudes to get around, since they each have a color they can't jump on. That's a cool concept. It's currently a little hard to get up on to any of the platforms, since the height of the jump vs. the platform height is a tight squeeze. It's also hard to remember which key switches to which dude - some kind of indicator of which one you're controlling would go a long way.
I'd love to see this fully fleshed out. If you post a finished version of this after the jam I'll definitely check it out.