We've all seen it before: a child, with an $500 iPad on his/her lap, playing Angry Birds, while his/her guardian waits in line, reads a magazine, or naps while their prepubescent charge is distracted. With no complicated controller or learning curve necessary for thousands of games on Apple's App Store, it's no wonder more and more children are seen commandeering their parent's expensive iPads and iPhones to play Cut the Rope.
While the majority of games on iOS devices are defined as casual, it would be a mistake to assume all are kid-friendly. In fact, many games have been ported over to iOS devices from other systems, some of which were made well before these kids were born. More and more developers are recognizing Apple's large user base, and companies like Square Enix are slowly porting over entire libraries—years of gaming history—and adapting them for touch screen play.
Recent iOS ports of hardcore titles, new and old, got us thinking that there are many stellar titles that have been adapted to play on Apple's touch screens. Some ports have been horrid, but we're going to pretend they don't exist. Instead, we've put together a list of titles available on iPads, iPhones, and iPod Touches that successfully made the jump from consoles, handhelds, and PCs.