Games like Hydra - Poseidon's conspiracy

Games like Hydra - Poseidon's conspiracy include SOMA, Darkwood, Still Wakes the Deep, Mouthwashing, and Resident Evil Requiem. We matched them by the tags players give Hydra - Poseidon's conspiracy on Steam (Horror, Retro, Lovecraftian, Psychological Horror, and Adventure): closest matches first, and among equally close ones the better-known games.