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Sector 404

Sector 404 is a first-person anomaly horror game set in a crumbling Soviet housing block. After taking your medicine, your world begins to fracture. Climb from floor to floor, uncovering distorted anomalies and your own unraveling mind. Miss too much, and reality resets. Will you ever make it home?

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Developer
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Release
July 13, 2025
1 year and 19 days ago
Steam Reviews
Mostly Positive67 reviews71.6%

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About the Game

In Sector 404, you play as a man returning home late at night. The block is quiet—too quiet. You take your medicine like always, but something’s wrong. The stairwell feels endless, the air feels heavy and unseen eyes seem to follow your every step. You need to get home. But the building has other plans.

  • Starting at the ground floor, your goal is simple: reach your apartment—but how far is it tonight? Choose your route: 10, 15, or 20 floors. The higher you go, the more chances for something to go wrong.

  • The floors hide anomalies - you must watch every shadow, listen to every sound, and notice the smallest things. Miss them, and you’re pulled back to the start. Again. And again.

  • With 80 unique anomalies scattered throughout the block, no two games are ever the same. Stay sharp - your survival depends on it.

  • To make it home, you’ll need every tool you’re given: an old phone that shows how many anomalies have been detected in the building—but not necessarily found. And an electronic anomaly detector. Wave it near radios, TVs, computers, or phones, and if it starts beeping faster and the numbers spike, you’ve found something… unnatural.

You’re not sure what’s worse - the things you’re seeing, or the feeling that you’ve seen them before. What if you’ve already made it home - and this is what it looks like now?