Gothic Horror: Atmosphere Over Gore
Ravenloft (D&D 5e) is the entry point. Vaesen (Year Zero Engine) is the masterpiece.
Gothic horror is about atmosphere, not jump scares. The monster represents a moral or psychological truth — the vampire is aristocratic decadence, the werewolf is repressed savagery, the ghost is unresolved guilt. The setting matters more than the monster: crumbling castles, fog-shrouded moors, gaslit streets. Combat should be rare and desperate.
Vaesen (Free League) is the best Gothic horror RPG currently in print. You play investigators in 19th-century Scandinavia, confronting creatures from Nordic folklore. The system is simple (dice pool, count successes) and the published mysteries are the best-written horror scenarios in the hobby. For D&D groups, Curse of Strahd is the definitive Gothic horror campaign — but it requires a DM committed to tone management (no joke characters, no Monty Python references).
Lovecraftian Horror: The Cosmos Does Not Care
Call of Cthulhu is the gold standard. Delta Green is the modern masterpiece. Trail of Cthulhu is for investigation purists.
Lovecraftian horror (cosmic horror) is about insignificance. The universe is vast, indifferent, and contains truths that human minds cannot process. The horror is not that the monster will eat you — it is that learning about the monster makes you realize your entire worldview is a comfortable lie. Sanity mechanics are essential: the more you learn, the more your mind fractures.
Call of Cthulhu 7th Edition is the most-played horror RPG. Its percentile skill system and Sanity mechanics are the industry standard. Delta Green takes the CoC engine into the modern day: you are federal agents covering up cosmic horrors while your personal relationships and mental health disintegrate. Trail of Cthulhu uses the GUMSHOE system (investigative abilities never fail, you always find the clue) and is better for pure mystery campaigns.
Survival Horror: Resources, Choices, and Consequences
Mothership for sci-fi. Mork Borg for fantasy. Dread for one-shots.
Survival horror is about scarcity. Ammo, health, light sources, time — everything is limited, and every encounter costs resources you cannot get back. The tension comes from deciding whether to fight (spend ammo, risk injury) or flee (abandon objectives, lose positioning). Mothership (sci-fi horror) uses a stress/panic system where accumulating stress makes you more likely to succeed but also more likely to panic — the perfect survival horror tension mechanic.
For one-shots, Dread is unmatched. The core mechanic is a Jenga tower: when you attempt something risky, you pull a block. If the tower falls, your character dies. The physical tension of a wobbling tower creates real anxiety at the table — no dice system can replicate the moment when someone reaches for a block and everyone holds their breath. The limitation: Dread only works for one-shots, because characters die and the tower resets.