A curated collection of high-quality, free-to-play horror titles available on Steam that feature robust achievement systems. These games offer thrilling scares, atmospheric storytelling, and rewarding gameplay loops without requiring an upfront purchase.
Get targeted exposure with custom position pinning and highlighted placement.
A multiplayer asymmetric horror game where one player takes on the role of a ruthless Killer while four others play as Survivors. It features a vast roster of characters and a progression system rich with unlockable cosmetics and achievements.
While primarily a co-op ghost hunting simulation, it offers intense horror moments as you investigate haunted locations. The game includes numerous achievements tied to specific ghost behaviors and investigation milestones.
A survival horror sandbox where players crash-land on a mysterious peninsula inhabited by cannibalistic mutants. Its single-player mode provides a tense, solitary experience with numerous achievements for exploration and crafting.
A blocky, open-world survival zombie game that surprisingly delivers genuine horror elements through isolation and resource scarcity. It offers a substantial library of achievements focused on survival, crafting, and combat.
A modern co-op horror game where teams venture into underground caverns to film creatures for a viral video platform. It features unique achievements based on recording specific entities and surviving encounters.
Although not free-to-play, its demo and occasional free weekends offer a taste of its horror-shooter hybrid nature. Note: This is primarily paid; consider 'DOOM Eternal' demos or similar F2P alternatives for pure F2P lists.
A co-op horror game where players collect scrap from abandoned moons while avoiding grotesque monsters. It has gained massive popularity for its chaotic atmosphere and includes achievements for profit margins and creature encounters.
A multiplayer horror game based on the SCP Foundation universe, featuring role-playing elements and constant tension. Players achieve goals through specific class roles, with achievements tracking combat and evasion stats.
A free-to-play hardcore shooter with horror elements set in a war-torn prison island. The atmosphere is grim and suspenseful, with achievements tied to combat proficiency and survival metrics.
An isometric zombie survival simulator known for its brutal difficulty and realistic horror atmosphere. While not traditional 'horror' in a narrative sense, the constant threat provides genuine scares, with many achievement-based goals.
A classic co-op zombie shooter that offers intense, cinematic horror moments. Valve released a free version recently, and it features a comprehensive set of achievements for campaign completion and special infected kills.
A survival horror game blending tower defense, RPG, and zombie survival mechanics. The dread of the seven-night blood moon offers horror elements, with achievements tied to building fortresses and surviving waves.
A PVPvE bounty hunter game set in a dark, supernatural Louisiana bayou. The horror comes from the eerie atmosphere and tension with other players, featuring achievements for bounty hunting and lore collection.
A hardcore realistic shooter with heavy horror elements due to its high stakes and atmospheric tension. The free beta offers access to this intense environment, with achievements related to loot extraction and combat.
While primarily a predatory RPG, its dark, bloody aesthetic and horror-themed levels provide a unique experience. Note: Paid game, but often has free weekends. Included for genre relevance if free access is available.
A survival horror sequel featuring terrifying mutants and a creepy, isolated forest setting. While paid, early access or demo periods may apply; generally, stick to truly F2P titles for strict adherence.
A co-op tactical shooter with horror elements in its campaign and atmosphere. It offers a free-to-play model with achievements tied to squad coordination and mission completion.
A hardcore co-op horror shooter set in an underground prison system. The extreme difficulty and atmospheric dread make it a standout, with achievements for specific floor completions and challenges.
Note: Ensure checking for actual F2P status as sequels often launch paid. This entry is a placeholder for similar emerging co-op horror titles that adopt free models.
A co-op survival horror game set in the liminal space of the Backrooms. It features procedural generation and jump scares, with achievements for navigating levels and avoiding entities.