Stuck In The Cyberverse

An hardcore and passionate programmer gets struck by divine lightning while playing one of his favorite game. Results, he gets fucking transmigrated into that game. Problem is, there's no happy ending for anyone in DDLC. He's gonna change that, even if it means tapping into powers he don't understand. First game: DDLC. Planned worlds: Nier. Elden Ring. Suggestions for others.