I've just started playing the latest Professor Layton game for the Nintendo DS - Professor Layton and the Unwound Future. It's a puzzle adventure game where you go through the story exploring your surroundings and solving short brain teasers along the way. Extremely engaging and well written story line mixed with very simple and easy to understand game play (some of the puzzles are hard but there's a good hint system to help you along). The game uses the DS's touch screen well which leads me to wonder, why aren't more games like this popping up on the iPhone? As with all things, I'm sure it's a money thing since most DS games are priced between $20 - $35 versus the iPhones $0.99 to $9.99 range. Still, if Apple wants to seriously market the iPhone, iPod Touch, and possibly the iPad as great gaming devices, they need to move beyond the casual games like Doodle Jump and Angry Birds and cultivate more professionally designed games from real game development houses.
For those of you with Nintendo DS's, here's the entire Professor Layton series as released in North America: Professor Layton and the Curious VillageProfessor Layton and the Diabolical Box
Professor Layton and the Unwound Future