Favorite classic games

Putting aside almost anything that came from Square/Enix/Square-Enix, the list suddenly becomes a lot shorter! I'd have to go with the arcade version of Revolution X (I think that was the name of it.) It was a shooter game where you had to save Areosmith and the "special bombs" were CDs!!! If I still had all the quarters my friends and I dumped into that thing, I could've bought the thing!!

My favourite game would be Super Mario Bros back in the NES and Famicom days