Hey everybody - this is Shadic from the Project M Back Room. (As in - I'm a developer.)
Glad to see people seem to be liking the game! Derrit's first post was actually one of the reasons I'm over here - We're actually looking for possible fan-remixes to put on our stages, so that we're staying away from copy-written IP from big companies.
If anybody has some good ideas, especially for Castlevania, or any of our other added stages, let me know! I'd love to ask the artists if we can use their awesome music. The main difficulty would be getting certain songs to loop, but hopefully we could figure something out.
And if you have any general questions about the game, let me know.