Can I just say WOW! I think I need to say it again... Wow! This game looks totally awesome and while I might be prone to hyperbole (and a half), you gotta check it out. My son played it a PAX East and it takes a lot for him to be impressed ;-p

http://miegakure.com/

There's not a demo publicly available for download...and it looks like it will be at least a year before release but thought I'd put this on the radar for anyone with interest in it ;-)

Too bad my mind isn't capable of thinking four-dimensionally.

Looks alright, reminds of that PSP puzzler.