FCE Ultra GX is a modified port of FCE Ultra v0.98.12. With it you can play NES games on your Wii/GameCube. The GUI is powered by libwiigui.

Features:

* Wiimote, Nunchuk, Classic, and Gamecube controller support
* iNES, FDS, VS, UNIF, and NSF ROM support
* 1-4 Player Support
* Zapper support
* Auto Load/Save Game States and RAM
* Custom controller configurations
* SD, USB, DVD (requires DVDx), SMB, GC Memory Card, Zip, and 7z support
* Custom controller configurations
* 16:9 widescreen support
* Original/filtered/unfiltered video modes
* Turbo Mode – up to 2x the normal speed
* Zoom option to zoom in/out
* NES Compatibility Based on v0.98.12
* Open Source!

Changes:

Core upgraded to FCEUX 2.1.0a – improved game compatibility
State issues fixed – old state files are now invalid!
Cheat support (.CHT files)
IPS/UPS/PPF automatic patching support
Fixed “No game saves found.” message when there are actually saves.
Fixed shift key on keyboard
Text scrolling works again
Change default prompt window selection to “Cancel” button

Free and legal NES roms to try with this emulator can be downloaded from here: http://www.pdroms.de/files/nes/

News source: http://www.wiibrew.org

http://code.google.com/p/fceugc/