mame is a multi arcade game emulator, play all your old favourites on it ie: defender, dig dug, pacman, frogger, operation wolf, double dragon, shadow dancer, final fight, galaxians, pac land, ridge racer, ghouls n ghosts, space ace etc, it plays them all just as you were there in the arcades, especially if you have a cabinet to lob them in (the roms which are the games)
i`ve built a couple from old arcade machines