Im focusing more on the retro theme, and thinking of adding cheese to only one scene in the game, and im wondering if thats enough. If its not, i would aprecciate it if CheeseMaster1 told me. Thank you!
it doesn't have to be overly related, consider the example game. It is not really about cheese but there are pieces of cheese that you can collect and trigger an ending with.
So yes, you can make it so that cheese is only in that one scene.