I kind of want to import Puyo Puyo Tetris now:
http://www.giantbomb.com/videos/quick-look-puyo-puyo-tetris/2300-9838/
Looks awesome if you like puzzle games. I'm actually not a huge fan of Puyo Puyo, but that's because I've never gotten good at it. This merging of the two looks all kinds of fun (and crazy) and apparently it's never coming to the US due to a licensing issue or something (something to do with it being published by Sega). You can import from the usual suspects, or you can get it from amazon third parties.
There are versions for all platforms, including Vita, and they are all region-free apparently (not sure about Wii U/3DS versions being region-free, though - aren't those platforms locked?). I'd probably opt to get the PS4 version in the hope that I'd be able to get somebody to play it with me locally. I wonder if you'll be able to play online in the US?