Controls: Use the left and right arrow keys to move. Jump by pressing the sleepy key. (Z) Shoot fireballs by pressing the key that looks like twitter (X) You can pick up your ring every time you get hurt to survive another hit, but be quick! It's very fast. Don't use full screen mode. Otherwise, it might be too laggy.
An example using my Mario Boss Engine. Had to tweak this a bit to get it working, you will need to do that too!