NES.emu is a commercial port of the NES emulator FCEUX for Android.
Quote:
Play all your favorite NES/Famicom games
NES/Famicom emulator based on FCEUX (GPL), designed and tested on the original Droid/Milestone and the Xoom, but works on many devices with similar specs. It uses the most up-to-date revision of well-known PC emulator FCEUX (most other Market apps are built from older & less accurate versions of FCE Ultra).
Features:
Accurate emulation and similar compatibility to FCEUX 2.1.4
Backup memory and save state support, auto-save and ten manual slots for save states. State files from FCEUX should work on NES.emu and vice-versa.
Supports ROM-based games in .nes and .unf formats
Famicom Disk System emulation using .fds files (select your BIOS in the options first)
VS UniSystem support, push Start to insert coins
Zapper/Gun support, touch screen to fire, touch & hold outside of display area to simulate firing away from the TV
Zip file support
Configurable on-screen multi-touch controls in addition to keyboard controls (needs Android 2.1+ for multi-touch, up to 3 touches supported at once)
Multiplayer-capable Wiimote + Classic Controller and iControlPad support (no need to purchase a separate app, see website for full instructions)