The gameplay is OK, it's smooth and easy, but the movement isn't as fluent as it could've been. Nor are the backgrounds as detailed a stage as in the original game. Can't give much credit for sprites, but anything from MS turns into a great game! I'd work more on the level layout, a continue screen and more graphical menus. In terms of programming it's a good engine, basic but useful. Keep it going!
-cd-