Yay! Looks wonderfully adorable and fun! I've never played a Puyo Puyo title, but there was always an interest. Of course, I've played many Tetris incarnations, so this should be a glorious multiplayer game.

I hope there is a pure Tetris mode

There is.  Check the Wikipedia article on the game for more info.

Since it's a launch game in Japan, I guess if somebody doesn't want to wait til late April, they can just log onto the Japanese eShop and download it there.

I am kinda interested in it, but not $30 worth. With Puyo games and Tetris games, I tend to play them in short bursts.

$30 seems reasonable to me, since I'd have probably paid $15 each for downloadable versions of Tetris and Puyo Puyo. I really would have rather had this as a launch title, though, so I may be tempted to get the Japanese version, depending on how involved a process that turns out to be.

Gah, I really want those darn keychains. Between the added cost and the convenience of always having it on the system, I don't think I can really justify buying the physical version though.

I'd rather not have the keychains and have the physical version the same as the PS4 version. Not a big collectible guy other than soundtracks and figures.