Smeags on 05 August 2010
Although the iPhone/iPod touch version of the game doesn't include most of the mini-games or the Zen garden, it still has the whole single player mode and lots of extras. It was a steal to only get it for $2.99, and I loved every minute of it. Great tower defense game. 
These new modes sound great as well, hopefully I'll get to try it, as my brother also has it on his computer. 
