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Mysterious School

Mysterious School

Live

Casual and puzzle

Platforms
Release:
2023
Developer:
DuoDuoDog
Scale:
Average concurrent players23
Player rating:
36.3% · 1.9K
Profile data as of:
August 29, 2026

"Mysterious School" is a horror game that supports multi player online and single player. Why do girls often cry on campus at midnight? What happened to the once famous No.1 middle school? Take your partner, find out the truth that the young girl has become a zombie, and help the girl reincarnate.

Screenshots

Images from the source page, in source order. Select an image to view it full size.

Videos

Videos from the game’s source page, in source order. Select one to open the original.

Overview

Franchise
Unknown
Release date
  • Windows — February 16, 2023
Developer
Publisher
Age rating
  • ClassInd 10 — Ages 10+ · Steam Store
Content warnings
Not specified by the storefront
Interaction modes
Single-playerMultiplayerOnline co-opLAN co-op
Session capacity
Unknown
Access model
  • Free to play
Monetization
Unknown
Storefront price
Unknown
Store contents
  • 22 Achievements · Steam Store, August 29, 2026
Languages
EnglishRussianGermanFrenchItalianJapaneseKoreanChinese, Simplified script

Classification

Genres
Casual and puzzle
Evidence:
Setting and subject matter
Horror
Camera
Unknown
Visual style
Unknown
Combat system type
Unknown

Scale

Concurrent players · period average

23

August 16, 2026 — September 15, 2026

under 100over 1 million
Detailed value
23.28
Coverage
Steam
Origin
Published by source
Confidence
Medium — The site's calculation method is not published
Basis
Average concurrent Steam players over 30 days from Steam Charts: 23
Date observed
September 15, 2026
Source
Steam Charts

Concurrent players · period peak

80

August 16, 2026 — September 15, 2026

under 100over 1 million
Coverage
Steam
Origin
Published by source
Confidence
Medium — The site's calculation method is not published
Basis
Peak concurrent Steam players over 30 days from Steam Charts: 80
Date observed
September 15, 2026
Source
Steam Charts
Ratings
  • players36.3% · 1.9KSteam, US storefront · Steam reviews
Last update

Concurrent players

period average · February 2023 — August 2026 · Steam · published by source · Steam Charts

7460
February 2023August 2026
Change over period
−69%decrease from 79 (February 2023) to 24 (August 2026)
Gaps
  • No data for 2 months: July 2023 — August 2023
  • No data for 1 month: November 2023
  • No data for 1 month: January 2024
  • No data for 4 months: April 2024 — July 2024
  • No data for 3 months: September 2024 — November 2024
Observations
32

Mechanics

Key game systems from the Mechanics Catalog. Assessment axes are independent and are not combined into a single score. An unassessed mechanic is unknown, not absent.

  • Clan system

    Not assessed

    A persistent player organization created or recognized by the game itself, with a stable membership, a life beyond one session, a shared identity, functions, and goals.

  • Player economy

    Not assessed

    An in-game system where player decisions materially influence at least part of the production, supply, distribution, or price of in-game value.

  • Territory control

    Not assessed

    A system where players or organizations capture, hold, and use parts of the game world with lasting consequences.

  • Competitive PvP

    Not assessed

    Structured competition between players with rules and a measurable outcome, usually including skill-based matchmaking.

  • Live service and updates

    Not assessed

    A regular rhythm of meaningful updates, including seasons, patches, events, and a roadmap that supports a long product life.

  • Character progression

    Not assessed

    A system for long-term character or account development through levels, skills, equipment, and specializations.

RealmScanner is a research catalog for multiplayer games. Data comes from public sources; coverage and evidence appear beside each assessment.