The perfect game has to be fun, have an addicting soundtrack, varied and harder levels as you progress, and something cool that no other game had ever done before or at least the way the game had used it. Also lately killer realistic graphics + fast multiplayer fun have been added to the obove requirements.
I loved the original centipede and still play it through emulation on the PSX/Dreamcast/Mame or on my 2600 if I am bored. But the 3d remake of centipede sucks ass. The speed/twitch of the original was lost. Simply making it 3d wasnt Cool, and since the concept had been done before it wasnt fresh.
Done underestimate the soundtrack either... I used to have the music from doom2 going through my head alot, just like the sounds of Mrs Packman when I left the arcades.