Same... I remember when Super Castlevania IV came out on the SNES our jaw dropped when we saw that the whole level began to rotate. We were already coding back then but probably not old enough to be professional game developers (although some started really young).

Mind-blowing effect (for 1991) begins at 2min 12s:

https://www.youtube.com/watch?v=kQvTCzjyWtY