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Mutant horror games

In these games the enemies were once people or animals, changed by a virus, an experiment or something living in the dark. You fight or slip past pale cave dwellers, infected villagers and stitched-together bioweapons. The fear comes from bodies that look almost human and from never knowing what the next one has turned into.

The top 30 of 59 mutant horror games, ranked by player and critic scores

The 30 best, 2026

  1. The Forest key art: the legs of a woman in a bloodied teal skirt and teal high heels walking across dark ground between plants SurvivalThe ForestIts enemies are a clan of genetic mutants with beliefs, families and morals who appear almost human, and worse deformed ones live in the caves 96% on Steam (685,275 reviews)15 h or morePaidPC, PlayStation, VR
  2. Wicked Seed key art: Ella raises a handgun and looks over her shoulder in a dark forest framed by red flowers and thorny red branches SurvivalWicked SeedThe story turns into a biological nightmare of mutated creatures, which reviewers liken to Parasite Eve's DNA mutation 95% on Steam (1,487 reviews)about 8 hPaidPC
  3. BioShock key art: a rusty Big Daddy with a drill arm and a Little Sister holding a syringe in a dim, flooded art deco hall Multiple endingsBioShockIts Splicers are citizens twisted by genetic modification, and you inject plasmids that rewrite your own body. 94% on Steam (32,277 reviews)12 h or morePaidPC, Xbox
  4. Species: Unknown key art: a mercenary in a sci-fi suit and helmet in a blue-lit ship corridor, with a dark creature's red eyes glowing beside them Co-opSpecies: UnknownThe developer's content description mentions mutant monsters among the threats aboard the ship. 94% on Steam (11,609 reviews)about 25 minPaidPC
  5. NO-SKIN key art: the title in bold red capital letters on black, with dark red fleshy shapes at the right edge SurvivalNO-SKINThe friends you fight early on later grow into ghastly, changed forms as you go deeper into the house. 94% on Steam (1,436 reviews)about 30 minPaidPC, PlayStation, Xbox, Switch
  6. Record of Greypine key art: a dark-haired figure with pink streaks raises a hand to their face under glitchy scanlines, title at lower left PsychologicalRecord of GreypineAnomalies called Derivatives mutate the animals and plants of this alternate early-2000s world 98% on itch.io (328 ratings)about 2 hPay what you wantPC, Mac, Linux
  7. Resident Evil 3 Nemesis (1999) key art: the red and silver game logo beside Nemesis's stitched, grimacing face on black SurvivalResident Evil 3 Nemesis (1999)Steam's feature list warns of mutations stalking the streets: skinless dogs, giant spiders and clawed creatures. 95% on the PlayStation Store (11,720 ratings)about 6 hPaidPC, PlayStation
  8. Endoparasitic key art: a blocky grey figure reaching out on a tiled floor, its body sunk into a large splash of red blood beside pure black darkness SurvivalEndoparasiticThe lab is full of horribly mutated monsters, the station's staff turned by the outbreak. 94% on Steam (3,106 reviews)about 2.5 hPaidPC, Mac, Linux, Xbox, Switch
  9. Resident Evil 2 (1998) key art: the red Resident Evil 2 logo on black beside a pale zombie with one bulging eye and clawed fingers peering round a dark door SurvivalResident Evil 2 (1998)The store promises more mutant creatures, among them a skinless thing with an exposed brain and a giant plant 96% on GOG (2,714 ratings)about 6 hPaidPC
  10. STASIS: BONE TOTEM key art: a frightened woman in a diving helmet underwater, a toothed orange-lit tentacle coiled around her in the green dark EscapeSTASIS: BONE TOTEMMutated creatures wait in the vents and the cutscenes show the lab's monsters. 93% on Steam (2,689 reviews)12 h or morePaidPC, Mac, PlayStation, Xbox, Switch
  11. Antarctica 88 key art: a grey fanged monster roars beside the glowing cyan title on an icy blue background Multiple endingsAntarctica 88: Scary GamesSteam describes the enemies as mutated monsters that you fight with the weapons you collect 92% on Google Play (182,456 ratings)about 1.5 hFree to playiPhone, Android, PC, Xbox, Switch
  12. Dead Space key art: Isaac Clarke's bloodied hand in a torn glove and armoured cuff, raised against a field of stars SurvivalDead Space (2008)The infected dead are twisted into Necromorphs that can sprout new limbs when wounded. 92% on Steam (29,363 reviews)11 h or morePaidPC, Xbox
  13. Metro 2033 Redux key art: a soldier in a helmet and gas mask raises a hand against bright light in a snowy, ruined street with a red Cyrillic sign SurvivalMetro 2033 ReduxThe besieged station-cities fight the mutant horrors that wait outside, and winged mutants hunt you on the surface 92% on Steam (143,484 reviews)about 9 hPaidPC, Mac, Linux, PlayStation, Xbox, Switch
  14. Metro: Last Light Redux key art: a gas-masked soldier with a rifle and a round shield crouching in the rain before ruined Moscow towers and a domed church Multiple endingsMetro: Last Light ReduxMutants stalk the catacombs beneath the surface and attack in swarms, and others hunt in the poisoned skies above 91% on Steam (82,615 reviews)10 h or morePaidPC, Mac, Linux, PlayStation, Xbox, Switch
  15. Before The Night key art: a skull-faced hooded figure in a red cloak at a doorway to a mushroom village, with a white critter and red-eyed purple monsters around 2D horrorBefore The NightMeat-starved mutants appear from nowhere to roam the streets of the animal world after dark 94% on Steam (458 reviews)about 5.5 hPaidPC, Switch
  16. SCP: Fragmented Minds key art: an armoured soldier in a visored helmet before a warped red and teal void with a dropship and floating rocks SurvivalSCP: Fragmented MindsThe first SCP you meet in Chapter One is SCP-3199, a flock of mutated chicken-like creatures. 91% on Steam (1,260 reviews)PaidPC
  17. System Shock key art: SHODAN's glowing teal-green mask-like face with bright white eyes, over faint circuit lines on a black background Action horrorSystem ShockMuch of the crew has been mutated by SHODAN, and pale, bloodied mutants rush you in the corridors 90% on Steam (13,113 reviews)13 h or morePaidPC, PlayStation, Xbox, Switch
  18. Ground Zero key art: a silver-haired woman in a red beret and goggles raises a pistol on a rainy Korean street at night, with a huge fiery cloud behind her SurvivalGround ZeroEvery living thing touched by the impact is mutated: dogs first, then people, then stranger creatures 88% on Steam (759 reviews)11 h or morePaidPC, PlayStation, Xbox
  19. BioShock 2 key art: a Big Daddy in a brass diving suit holds a drill, with a glowing-eyed Little Sister on its shoulder, in a dark, rainy Rapture hall Multiple endingsBioShock 2Its Splicers are citizens twisted by splicing their genes with ADAM, and you inject plasmids yourself. 89% on Steam (15,009 reviews)11 h or morePaidPC, Xbox
  20. Vomitoreum key art: a pale hooded figure in a gas mask with a coiled breathing hose beside dark panels of skeletal figures Body horrorVomitoreumThe fog's infection has turned the land's denizens into wretched mutants you shoot your way through. 91% on Steam (899 reviews)about 2.5 hPaidPC, Linux
  21. Heaven Dust 2 key art: spiky-haired Steve with a shotgun back to back with a young woman among zombies, two helicopters in a stormy sky SurvivalHeaven Dust 2Besides ordinary zombies there are mutated monsters: the armoured Bone Fiend, the regenerating Blood Fiend and the boomlad 90% on Steam (861 reviews)10 h or morePaidPC, Switch, PlayStation
  22. Heaven Dust key art: a spiky-haired boy aims a handgun in front of pale zombies and a hulking mutant with an eye in its chest, beside faded top-down views of mansion rooms SurvivalHeaven DustA hulking mutant with an eye in its chest looms over the zombies in the key art and waits as the boss. 92% on Steam (601 reviews)about 4 hPaidPC, Switch, Xbox, PlayStation
  23. Evil Nun 2: Origins key art: Sister Madeline's grinning face with red glowing eyes and glasses in a purple habit, beside a large black number 2 EscapeEvil Nun 2: OriginsMadeline's three mutant chickens, Gummy, Mr. C and a long-necked third, hunt you with her. 88% on Google Play (137,000 ratings)Free to playiPhone, Android
  24. Pathogen-X key art: a PS1-style demo box spread, the back with screenshots and Face your fears, the front with a gas-masked agent aiming a pistol Action horrorPathogen-XThe Pathogen-X virus turns the lab's staff into droves of violent mutants that you shoot your way through. 94% on itch.io (181 ratings)about 30 minFreePC
  25. Sons Of The Forest key art: a pale mass of reaching human arms and bodies rises out of a dark cave, lit in blue SurvivalSons Of The ForestPale mutants of fused bodies and many limbs wait in the caves, lit only by your torch. 88% on Steam (323,418 reviews)11 h or morePaidPC
  26. CANINE key art: a snarling dog's face seen from below, with bared white fangs and glowing amber eyes against black SurvivalCANINEReuben, a mutant dog-human hybrid about eight feet tall, stalks the building 96% on Steam (317 reviews)about 30 minPaidPC, Mac, Switch, PlayStation, Xbox
  27. The Killing Antidote key art: a pale, red-eyed, blood-mouthed woman zombie with long dark hair looms in the dark beside the title in English and Chinese Action horrorThe Killing AntidoteThe store's synopsis has humans constantly infected and mutated, and some mutants crawl along the ceiling. 88% on Steam (7,958 reviews)10 h or morePaidPC
  28. System Shock 2 remaster key art: the metallic face of the AI SHODAN with glowing green eyes and wires spreading out like hair SurvivalSystem Shock 2: 25th Anniversary RemasterHybrid mutants, once crew, roam the halls with pipes and shotguns. 88% on Steam (2,304 reviews)12 h or morePaidPC, PlayStation, Xbox, Switch
  29. RetroSpace key art, painted in two panels: a frightened mustached man with a pistol glances back at a red-eyed, insect-headed mutant in white armor Sci-fi horrorRetroSpaceWeird animal and plant hybrids roam the corridors, and your own Mutamods mutate you with side effects 90% on Steam (531 reviews)13 h or morePaidPC, PlayStation, Xbox
  30. Resident Evil 5 key art: Chris Redfield and Sheva Alomar back to back with a pistol and a shotgun Co-opResident Evil 5A biological agent transforms the local people, and larger bioweapons wait at the end of chapters. 87% on Steam (68,924 reviews)12 h or morePaidPC, PlayStation, Xbox, Switch

To play with friends

17 games

Short enough for one evening

Done in an hour or so

Free to play

5 games

Every game of the kind

More picks

Scores are those players and critics give on the stores and sites named; each game's page says where.

More kinds of horror

  1. Short horror games621
  2. Psychological horror games530
  3. Horror games with multiple endings417
  4. Horror puzzle games341
  5. Survival horror games259
  6. 2D horror games254
  7. PS1 horror games233
  8. Stealth horror games180
  9. Horror escape games164
  10. Surreal horror games145
  11. Horror visual novels137
  12. Anime horror games132
  13. Haunted house games131
  14. Mystery and detective horror games127
Every genre

Where you play

  1. Steam horror games1009
  2. Epic horror games97
  3. GOG horror games270
  4. itch.io horror games592
  5. PC horror games1337
  6. Mac horror games391
  7. Linux horror games261
  8. PlayStation horror games404
  9. Xbox horror games367
  10. Switch horror games317
  11. Mobile horror games188
  12. VR horror games69
  13. Browser horror games236
  1. Scary games1456
  2. Free horror games561
Every game, A to Z