The market for iPhone games has become so wide and diverse that it can realistically compete with most console and PC offerings. Where we once only got cheap time-wasters, we now have complete experiences that don’t feel any less impressive than what the competition offers. In fact, a lot of games made for consoles are appearing on the iPhone now that it is becoming so powerful. However, older games have paradoxically been mostly absent from the app store. That all could be about to change as emulation is now allowed on iPhone, though with some caveats that any retro fan should know about before getting too excited to play all your favorite NES games on your phone. Here’s what’s up with iPhone emulators, as well as our picks for a few of the best ones you can get right now.