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13 MASCA
Can you... identify the one who isn’t quite right?

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Features
Single-player
Steam Achievements
Family Sharing
Steam is learning about this game 
Languages:
Interface Full Audio Subtitles
English ✔ ✔
Korean ✔ ✔
Japanese ✔ ✔
French ✔ ✔
German ✔ ✔
Spanish - Spain ✔ ✔
Russian ✔ ✔
Simplified Chinese ✔ ✔
Portuguese - Brazil ✔ ✔
See all 9 supported languages
This game is not yet available on Steam

Planned Release Date: Jul 12, 2026

This game plans to unlock in approximately 6 weeks

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About This Game

1. Investigate the Unusual Individual

Among 13 completely different individuals, identify those who seem… off.
You have 295 seconds.

2. Choose Someone to Expel

Once the investigation ends, select one person you find suspicious and expel them.

3. Verify Through CCTV

Out of 4 suspicious individuals, only one is correct.
If you chose correctly, they will leave without incident…
But if you’re wrong… something strange will happen.

4. Escape the Monster

If something feels off, leave the CCTV room immediately and run!
In this enclosed space, that person will turn into a monster and roam the facility.
Survive long enough, and a beam of light will appear over an escape pit—your only way out.

5. The Investigation Continues

If you survive, the day will repeat, allowing you to gradually narrow down the correct answer.

However, if you’re caught by the monster—or fall into the pit before the light appears—

it’s game over, and the correct answer will change.

So when you make the wrong choice, observe the monster’s traits and focus on surviving as long as possible.

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 (64-bit)
    • Processor: Intel Core i5-4460 / AMD FX-6300
    • Memory: 8 GB RAM
    • Graphics: NVIDIA GTX 760 / AMD R7 260x (2GB)
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 8 GB available space
    • Sound Card: DirectX Compatible
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 / 11 (64-bit)
    • Processor: Intel Core i7-8700 / AMD Ryzen 5 3600
    • Memory: 16 GB RAM
    • Graphics: NVIDIA GTX 1060 / AMD RX 580 (6GB)
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 8 GB available space
    • Sound Card: DirectX Compatible
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