When Apple added the App Store to iOS, the iPhone and iPod touch became about as disruptive to the handheld video game market as the iPhone was to the smartphone industry. All of a sudden, users had easy access to thousands of low-cost video games.
But not only has Apple since sold more iOS devices than handheld systems from Nintendo and Sony put together, it's actually sold more than all major console systems. This, among other factors, makes iOS one of the most popular gaming platforms of all time...