Games You Discovered Through Emulation

Emulation gave me access to entire libraries I never knew existed. Played through Terranigma for the first time last year—incredible SNES RPG that never released in North America. Found out about it purely because I was browsing a "hidden gems" list.

What game did you only discover because emulation made it accessible? Could be a regional exclusive, something you couldn't afford as a kid, or just something that passed you by.