Another Lovecraft quote I like: “Never state an horror when it can be suggested.”
Lately, similar to brining fear into a game, I’ve been thinking of how to create real horror in games. This largely comes down to creating fear.
I like Lovecraft’s advice - it’s somewhat similar to ’show don’t tell’. It’s scary to be give the raw sensory facts to players, as this is how their characters would perceive, and not simply say something like “Four zombies are standing in front of you.” This makes the threat of zombies sound mundane. Instead describing the stench of the corpses, the way their faces are rotting, their jaws hang loose might cause more fear.
Another way to take what he says is to just hint at the horrific undertow. Let the players know true horror exists just behind the curtain, but make it somewhat intangible. Something that can’t simply be beat by their fists. They might stop specific horrific threats, but something deeper, darker, and alien is still there despite their success.