Well, actually it's a Miracle Witch. Just launched today, it's from our friends at Nigoro and its their latest free online game. Did I mention that it's free? So head on over to the Miracle Witch Site and give it a go. It's really a work of art and reminds me of the classic Falcom games from the late '80s with a bit of Hydlide mixed in.
If enough of you go play the game I think I'll be forced to put up another NEW Cave Story movie. Go play!