Final Fantasy 7, the first two Fallout and Disco Elyisum, Shenmue to an extent, but the Yakuza / Like A Dragon franchise probably tops all of them. I had stopped paying attention to video games after the dreamcast (I considered Shenmue the apex of what I liked in video games and couldn't find something similar), discovered the Yakuza franchise through Judgment in early 2020 and I was hooked, it was everything I had ever dreamed of in a game. I bought a PS4 specifically to play them, bought 0 to 6 during covid lockdowns and pretty much blasted through the franchise in a year. Rekindled my interest in games and in Japanese stuff, made me take my ass back to martial arts and generally pay more attention to how I behave and look after bad breakups and depression. Disco Elysium came very close to the same impact, I might add.