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:

* Faster SMB/USB browsing
* Last browsed folder is now remembered
* Fixed controller mapping reset button
* Fixed no sound on GameCube version
* Directory names are no longer altered
* Preferences now only saved on exit
* Fixed on-screen keyboard glitches
* RAM auto-saved on power-off from within a game
* Prevent 7z lockups, better 7z error messages

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://wiibrew.org/wiki/FCE_Ultra_GX