Catch as many as you care to
Its a fun game in it's own right, with gameplay similarities to two of peoples favorite puzzlers: Tetris Attack and Meteos, but the additional goal of finding and...ughhh...trozi-ing all 380-something pokemon seems more like a chore than anything that belongs in a puzzler.
The most impressive things are its pseudo-stylish pokemon look chic, and an excellent array of multiplayer options. Of course, multiplayer is the way to go if you want to challenge your skills.
Unfortunately, flashy pixels and Wi-Fi features aren't much more than a tinsel on Trozie's knockoff foundation.