I played through it. It worked fine for me on a Vista. It was pretty well done. It generally looks cool, and was pretty fun. I didn't see much in the way of bugs. I think there are a few little issues I noticed. It was a bit too hard to run out of bombs in my opinion, and I never really felt I had to worry about conserving ammo. Also, the levels were really obviously made of tiles. The tunnels that looked to be made out of dirt had all right angles, which made them seem really artificial. But there were also a ton of nice little touches. I like how the "run" pretty much applies to any action, whether swimming, running, rolling, or jumping. Also, on the moving platforms, Midi's tail reflects the direction you're moving. Overall, I enjoyed it, and think that it's a very promising demo. Thanks for sharing it.