Cellphone games have come a long way since the days of Snake and Tetris (though, strangely enough, I still see a lot of people playing these games on their phones). These days, iPhone and Android games feature stunning graphics, intricate storylines, and unique controls. But what of the casual cellphone game? If the App Store's annual lists are anything to go by, people will always appreciate casual, pick 'em up and play 'em games, especially on mobile platforms. Here's a look at casual cellphone games over the past decade.