Yes, Minecraft is a horror game. If you disagree, that’s fine, but I recommend you get over it, because it totally is.
Way back in 2010, Mojang turned it upside down with a substantial content update called the ‘Halloween update’ that added a bevy of new features, including pumpkins that can be turned into jack-o-lanterns and a biome generator. By far the biggest addition it brought with it was the Nether, an underworld you could craft a portal to travel to. It was inhabited by new enemies, like Pigmen — the hellish reincarnation of the many pigs slain in the overworld — and massive fireball spewing ghosts called Ghasts.
If you were playing Minecraft back then, this was a pretty big deal.
Since I’m only human, I may have missed something you feel deserves to be on this list. If that’s the case, feel free to let me know in the comments. But before you do that, I’d like to give out an honorable mention to Skyrim’s Dawnguard expansion. It’s not scary, but it did have some mild horror themes (vampires!).
Before you start ripping me apart, you should really tell me which of the above expansions you enjoyed the most!