Browser horror games, nothing to install
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320 titles, checked one by one.

DungeonsQuestDungeonsQuestNight monstersCapybara Winter CurseCapybara Winter CurseNight monstersGiant KillerGiant KillerNight monstersObby Tower: Only Up!Obby Tower: Only Up!Night monstersElemental BarrageElemental BarrageNight monstersNutty RushNutty RushNight monstersDeath Worm 2Death Worm 2Night monsters5 Night at Green Head Monster5 Night at Green Head MonsterNight monstersEscape the Giant School 3DEscape the Giant School 3DNight monstersEvolution Arena Battle RoyaleEvolution Arena Battle RoyaleNight monstersVoxel CrusherVoxel CrusherNight monstersMonster Heroes Of MythsMonster Heroes Of MythsNight monstersAidan in DangerAidan in DangerNight monstersStop ZombiesStop ZombiesNight monstersMCBros PixelCraftMCBros PixelCraftNight monstersCounter Craft ClassicCounter Craft ClassicNight monstersFlipxy, the batFlipxy, the batNight monstersToxic Arena: Biological ThreatToxic Arena: Biological ThreatNight monstersAmong KnightsAmong KnightsNight monstersPoppy Playtime: Impostor HuntPoppy Playtime: Impostor HuntNight monstersMr AutofireMr AutofireNight monstersAlien WreckageAlien WreckageNight monstersSquareking of EasterSquareking of EasterNight monstersMONSTER STOMPERMONSTER STOMPERNight monstersGet Off My Farm!Get Off My Farm!Night monstersMonster Versus HumanMonster Versus HumanNight monstersMonster Rampage CityMonster Rampage CityNight monstersStickman Gun RunnerStickman Gun RunnerNight monstersHen Bubble Go Up GameHen Bubble Go Up GameLight scaresRope ChefRope ChefLight scaresCozy Kitchen MergeCozy Kitchen MergeLight scaresLabubu Hidden BurgerLabubu Hidden BurgerLight scaresHello Cat 2026Hello Cat 2026Light scaresAvatar World SecretsAvatar World SecretsLight scaresGhoul FusionGhoul FusionLight scaresAnimal Pair Card MatchAnimal Pair Card MatchLight scares