# Floor404: Anomaly Detection Horror Game - Escape the Hospital

> Explore a surreal hospital in Floor404, a free-to-play indie horror game. Detect anomalies and escape this psychological thriller.

Release date: 2026-07-21
Tags: exploration, adventure, immersive-sim, horror, dark, first-person, mystery, runner
Source: https://store.steampowered.com/app/4882720/
Article page: https://web-autoai.com/articles/floor404-escape-the-unsettling-hospital-anomaly-hunt?lang=en

Prices and ratings change over time — check the article page for the current values.

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## Overview
Prepare yourself for a descent into psychological horror with Floor404, a free-to-play indie title that plunges players into a disorienting hospital. Developed and published by LeeHwaRang, this first-person adventure challenges your perception and nerve as you navigate a surreal environment. Inspired by the unsettling nature of "The Exit 8," liminal spaces, and the infamous "Backrooms," Floor404 crafts an experience where the lines between reality and unreality blur.

## Highlights
*   **Genre-Bending Horror:** Floor404 masterfully blends exploration and mystery with psychological horror elements, creating a deeply immersive atmosphere.
*   **Anomaly Detection Gameplay:** The core loop revolves around meticulously observing your surroundings, identifying subtle anomalies, and reporting them to progress.
*   **Free-to-Play Indie Experience:** Developed by LeeHwaRang, this single-player game offers a compelling horror narrative accessible to all players.

## Who It's For
This game is perfect for players who enjoy atmospheric horror, psychological thrillers, and games that require keen observation and deduction. If you're a fan of titles like "The Exit 8" or the eerie aesthetics of liminal spaces and the Backrooms, Floor404 will likely resonate with you. It's for those who appreciate a slow-burn tension and the satisfaction of uncovering hidden details.

## Game Info
Floor404 is a single-player, first-person experience that emphasizes exploration and puzzle-solving within a horror context. Players must find a specific number of anomalies across eight floors to escape the mysterious hospital. The game supports full controller input, making it accessible for a wide range of players. It was released on July 21, 2026, and is available for free on Steam.