Ultimately, for the $20 price D.N.A. isn’t a bad experience at all, and the official website offers several demo options to learn more about the game before splurging, so it’s definitely worth a look for casual gamers on the go.
I am a big fan of casual games. It takes a special type of genius to come up with an easy-to-learn game that rewards hours of play. Given how much fun I've had playing D.N.A., I would have to say that the folks at 5th Cell Media are geniuses of that special type.