FCE Ultra is an NTSC and PAL Famicom/NES emulator for various platforms. It is based upon Bero's original FCE source code. Current features include good PPU, CPU, pAPU, expansion chip, and joystick emulation. Also a feature unique to this emulator(at the current time) is authentic Game Genie emulation. Save states and snapshot features also have been implemented. The VS Unisystem is emulated as well. FCE Ultra supports iNES format ROM images, UNIF format ROM images, headerless and FWNES style FDS disk images, and NSF files. FCE Ultra currently supports the following iNES mappers(many partially):