M.A.M.E. for Xbox In ProgressIf you don't know what M.A.M.E. stands for, it means MULTIPLE ARCADE MACHINE EMULATOR.
The kind folks over at Xb-power.com sent over a link to the MAME information site, and there is was, MAME is being developed on the Xbox with a working screenshots! If this still doesn't make sence to you, MAME can emulate most old arcade games and NEO GEO titles on your Xbox. So, in theory you could have an entire arcade all on one Xbox disk!