As the FakeNes project is now dead, I looked for a Nintendo emulator and found
this one. Resulted to be a great emulator, not only for NES, and in active
development. It uses GTK2 and runs smoothly on my system.
"Xe is a multi system emulator for Linux that emulates many console and
handheld video game systems of the past. It currently supports eleven different
systems with more in progress."
BTW it seem to be closed source, as only the binary can be downloaded. I'd like
to know if such a binary package could be added to portage.