Game is coming along nicely, it's very fun to play! Everything is so clear, clean and easy to understand and follow. Knowing this is a demo, here are some observations; Visuals could be polished a little more for that extra visual oomph! Some extra features like falling platforms or enemies that come out of the ground, could add some more difficulty to the gameplay. This game can certainly take some cues from other games such as Super Mario Bros, Sonic, Wonder Boy, to name a few, while keeping its own identity.