Fatal Floors

Fatal Floors is a co-op horror survival game on Roblox by FaultyMarkus Games launched in January 2026 and inspired by Lethal Company and Minus Decendence. Teams descend into abandoned deep facilities to recover valuable ores while avoiding hostile entities that still roam the floors. In under four months it reached 7.6 million visits with a 94.2% approval rating - one of the fastest-rising titles in the co-op horror niche on Roblox. The game is entirely free-to-play with zero gamepasses. Shards earned through achievements unlock Classes and cosmetics. A dedicated Fandom wiki documents the game at fatal-floors.fandom.com with over 600 pages.

Each run sends your team into one of four floor types, with survival and extraction as the only objectives:

• 🗺️ Explore Facility, Mansion, Hedge Maze, and Greenhouse maps - each with different layouts, entity spawns, and environmental hazards
• ⚔️ Evade six entity types including the Blob, Cave Crawler, Giant Kiwi, Thorns, Weatherman, and Bone Hound
• 💎 Collect Iron, Jade, Amber, Amethyst, and Gold ores ranked by star rarity - Gold Ore at 5 stars pays 100 coins per piece
• 🏆 Use tools including the Flashlight, Hammer, Reviver, and Teleporter to survive and extract teammates
• 💎 Unlock one of nine Classes using Shards - from the support-focused Nurse to the carry-heavy Hoarder and the mobile Teleporter

The Facility map adds blackout events that cut lights in floor sections, and a Pit trap only found in that map. Glass walls create visual tension: players can see entities and teammates through them before doors open.

Fatal Floors sits alongside Doors in the Roblox co-op horror genre but distinguishes itself with team sizes up to 25, a richer item and class system, and procedurally arranged floors that change the route each run.