A post-apocalyptic free-to-play MMO from the makers of EverQuest II and The Matrix Online. Set fifteen years after an initial horrifying outbreak, players must survive against the infected, wild animals, and other survivors.
Lag Studios' first-person adventure game where players traverse the 1000-room mansion of the cute ghost girl, Spooky; there they encounter disturbing specimens and various send-ups of classic video game horror and modern "YouTube-bait" horror tropes. Currently in Early Access, but free to play.
Nether is an online survival first-person shooter game powered by Unreal Engine.
Absolutely horrifying game and a nod to Lovecraftian horror. Wish more similar games came out.