It's rare to see a game that goes for the style of "port from a more advanced system", but I feel like the graphics and sound convey that well. Plumley is well-animated and usually controls fine, though not being able to turn around on water is annoying. Unfortunately, with ports to a handheld console comes screen crunch — Plumley moves a bit fast for how big the screen is, so sometimes, you can't see spikes until it's too late to react to them. As others have suggested, you could have the camera pan so it's ahead of you while you're running, artificially extending the screen size like some other GBC games did.