Square Enix iPod Games-Any Good?

So, I got an iPod Nano 4g a month or two ago and I'm now looking for a good game to play on it besides Zuma. I noticed Square Enix put up some iPod games: Crystal Defenders and Unsung Heroes. Anyone play these games? Are they good?

i unno

Maybe. I saw those but Square-Enix... in a iPod/iPhone. I am skeptical.

Are there any reviews on iTunes... if no one gives you any help here, that could get you started.