When is it okay to spoil something? A week after release? Two? A month? Twenty years?
Seemingly it's whenever the internet deems fit. With spoiler culture being mangled with mainstream pop culture wherever you look (thanks to juggernauts like Marvel and Game of Thrones), the level of plot concealment across the gaming industry is a pretty admirable achievement.
Perhaps it's down to games being slightly less accessible than an episode of TV that 20 million people streamed at the exact same time, but video games and their players tend to have a much higher level of decency when it comes to protecting spoilers for the enjoyment of each individual player.
However, there are some game spoilers so huge and well cemented in gaming history that they've effectively worked their way into the pop culture pool of common knowledge. Oftentimes it happens outside of pop culture, if certain references can be thrown around enough.
Whether you're into games or not, chances are you've heard of at least some of these enormous immersion-breaking spoilers.