Awesome. I need a new computer.

Yet another update:
Added ice flowers. They shoot ice balls that freeze enemies and you can kick them into other enemies.
A new snow stage.
Lakitus. They fly around the top of the stage and drop spiny eggs.

Finally, an update. I fixed many glitches and added a new power up, the Transform Mushroom. It turns you into a random controllable character for a short period of time.