When activated it will be the same old arcade game playing on your modern desktop or laptop.
It is a port of a PC / DOS version of the MAME emulator developed by a non-profit organization that strives to preserve the history of video games by running them on modern machines via emulators. Mac MAME Emulator is an emulator for running Arcade coin-up games on your Macintosh. Mac at full speed and sound - some would say even better than the original taking into account you don't have to insert year coins to play the game :)
