NES v3 emulates the hardware in a Nintendo entertainment system, allowing you to play ROM images on your iPhone. NES v3 was a complete rewrite of this popular emulator for iPhoneOS v3.0 (although it should also run on v2.x). There are many public domain, home-brew games available which have been written for the Nintendo platform, and depending on your country of origin, you may be entitled to play images of commercial games which you rightfully own.

The author does not condone the illegal piracy of copyrighted Nintendo games, and provides no support in obtaining or using pirated images.

Changes:

[jonz] Added “Sticky Controller” option; when on, holding a button and then dragging off the button’s space will keep the button in a “down” state until the user lifts their finger. When off, Button deactivates immediately when user moves out of button’s space.

http://www.zdziarski.com/projects/nesapp/