Turn your iOS device into a retro game console with GameDock by Cascadia Games. You can play all the great games of your childhood with 2 player and multiplayer via NES USB controllers. Over 100 games can be played and there will sure be more coming. Developer Andi Greisel said:
”I loved NES when I was a kid, and still do really, so I immediately started developing around those controllers. We certainly have discussed using other controllers, like SNES, but the look and feel of the NES controller just got me excited. Plus, there is beauty in their simplicity.”