Pretty good. I hope you'll keep working to make it a full game. To be honest, I've been trying to work on making my OWN game, and haven't even gotten this far so I aspire to make something this level at the very LEAST. If you want to expand, you can make something for story, maybe a goal, maybe you collect all the goober coins and then get to the end of the level, but overall I can see this being an amazing game someday. I hope I have inspired you with this comment and I am glad to have played the game in this state before it becomes a full game. (hopefully)