Enigmo. I finally completed this puzzle game on the iPhone. The original price was $7.99 and I bought it because it won the Apple Design Award for the iPhone Developer Showcase at Macworld 2008.Its price has fallen to $1.99 since then and further still to a mere $0.99. It is a game definitely worth checking out. It turns out there is a total of 50 levels. I was a little stuck around level 30, but after that hiccup, the rest of the game went fairly smoothly.