Back in the day, Undertale. Many made YouTubers and livestreamers have less fun by spoiling the pacifist, genocide and neutral routes and letting everyone only go the pacifist way. If they didn't then the fans would get all angry. Outside of playing the videogame was also another can of worms.

Don't know if Deltarune, also made by the creator, has the same problem since I've only ever played the game myself and never seeked out the community.