iNES for Symbian S60 3rd edition devices allows you to play good ol’ Nintendo Entertainment System (NES) and Famicom cartridge games. 
In order for iNES to work, files with “.nes”, “.nes.gz”, “.fds” and “.fds.gz” extensions should be placed in “E:\Others\iNES” directory.
The new version fixes a few bugs in the sound chip emulation, adds the “draw all sprites” option to avoid the authentic but annoying sprite flicker, extends the built-in configuration menu, optimizes Symbian audio and video rendering, and adds saved preferences on Symbian.
Full version of iNES-Symbian costs only $14.99, and gives you tons of fun. A free trial is available.