STEAMDB NEXUS

Steam app 2084940 · updated 12 Sep 2026, 20:56 UTC

Mysterious School

"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.

Mysterious School Steam header artwork
DuoDuoDogDuoDuoDog
24playing now
5424-hour peak
14,137all-time peak
23average, last 30 days

The last 30 days

−0.9Gain−3.81%% gain80Peak

686 hourly samples, with the daily peak drawn over them. Weekends are shaded.

02243658613 Aug18 Aug23 Aug28 Aug02 Sep07 Sep12 SepThursday 13 August 202622 peakFriday 14 August 202646 peakSaturday 15 August 202654 peakSunday 16 August 202644 peakMonday 17 August 202661 peakTuesday 18 August 202661 peakWednesday 19 August 202672 peakThursday 20 August 202644 peakFriday 21 August 202650 peakSaturday 22 August 202679 peakSunday 23 August 202666 peakMonday 24 August 202657 peakTuesday 25 August 202659 peakWednesday 26 August 202655 peakThursday 27 August 202680 peakFriday 28 August 202666 peakSaturday 29 August 202650 peakSunday 30 August 202646 peakMonday 31 August 202648 peakTuesday 01 September 202638 peakWednesday 02 September 202641 peakThursday 03 September 202642 peakFriday 04 September 202642 peakSaturday 05 September 202656 peakSunday 06 September 202651 peakMonday 07 September 202644 peakTuesday 08 September 202642 peakWednesday 09 September 202653 peakThursday 10 September 202651 peakFriday 11 September 202661 peakSaturday 12 September 202654 peak
Daily peakEvery hourly sample

All time

44 months, February 2023 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.

04k8k11k15kFeb 2023Sep 2023Apr 2024Nov 2024Jun 2025Jan 2026Aug 2026February 2023569 monthly peakMarch 2023109 monthly peakApril 202332 monthly peakMay 202339 monthly peakJune 202321 monthly peakJuly 20238 monthly peakAugust 202312 monthly peakSeptember 202322 monthly peakOctober 202325 monthly peakNovember 202313 monthly peakDecember 202327 monthly peakJanuary 20248 monthly peakFebruary 202414 monthly peakMarch 202427 monthly peakApril 20249 monthly peakMay 20247 monthly peakJune 20243 monthly peakJuly 20248 monthly peakAugust 202411 monthly peakSeptember 20249 monthly peakOctober 20248 monthly peakNovember 20240 monthly peakDecember 202414,137 monthly peakJanuary 2025583 monthly peakFebruary 2025316 monthly peakMarch 2025336 monthly peakApril 2025229 monthly peakMay 2025154 monthly peakJune 2025101 monthly peakJuly 202575 monthly peakAugust 202582 monthly peakSeptember 202599 monthly peakOctober 2025141 monthly peakNovember 2025153 monthly peakDecember 2025111 monthly peakJanuary 202685 monthly peakFebruary 202662 monthly peakMarch 202695 monthly peakApril 202689 monthly peakMay 2026112 monthly peakJune 202677 monthly peakJuly 202660 monthly peakAugust 202680 monthly peakSeptember 202661 monthly peak
Monthly peak

The last four months

Show:

The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.

022436586July 2026August 2026September 2026October 2026July 202660 peak — daily detail belowAugust 202680 peak — hourly detail belowSeptember 202661 peak — hourly detail below
Monthly peakHas finer data

July 2026

31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.

01632496501 Jul06 Jul11 Jul16 Jul21 Jul26 Jul31 JulWednesday 01 July 202640 peakThursday 02 July 202631 peakFriday 03 July 202646 peakSaturday 04 July 202654 peakSunday 05 July 202650 peakMonday 06 July 202644 peakTuesday 07 July 202660 peakWednesday 08 July 202654 peakThursday 09 July 202636 peakFriday 10 July 202651 peakSaturday 11 July 202642 peakSunday 12 July 202648 peakMonday 13 July 202657 peakTuesday 14 July 202642 peakWednesday 15 July 202646 peakThursday 16 July 202644 peakFriday 17 July 202630 peakSaturday 18 July 202634 peakSunday 19 July 202652 peakMonday 20 July 202648 peakTuesday 21 July 202649 peakWednesday 22 July 202641 peakThursday 23 July 202640 peakFriday 24 July 202647 peakSaturday 25 July 202658 peakSunday 26 July 202650 peakMonday 27 July 202654 peakTuesday 28 July 202651 peakWednesday 29 July 202639 peakThursday 30 July 202637 peakFriday 31 July 202645 peak

August 2026

31 days as the curve, each the highest figure that day. Behind it, 430 hourly samples from 13 Aug, which is as far back as the source keeps every hour. Weekends are shaded.

02243658601 Aug06 Aug11 Aug16 Aug21 Aug26 Aug31 AugSaturday 01 August 202653 peakSunday 02 August 202646 peakMonday 03 August 202650 peakTuesday 04 August 202659 peakWednesday 05 August 202641 peakThursday 06 August 202646 peakFriday 07 August 202648 peakSaturday 08 August 202661 peakSunday 09 August 202649 peakMonday 10 August 202647 peakTuesday 11 August 202658 peakWednesday 12 August 202642 peakThursday 13 August 202643 peakFriday 14 August 202646 peakSaturday 15 August 202654 peakSunday 16 August 202644 peakMonday 17 August 202661 peakTuesday 18 August 202661 peakWednesday 19 August 202672 peakThursday 20 August 202644 peakFriday 21 August 202650 peakSaturday 22 August 202679 peakSunday 23 August 202666 peakMonday 24 August 202657 peakTuesday 25 August 202659 peakWednesday 26 August 202655 peakThursday 27 August 202680 peakFriday 28 August 202666 peakSaturday 29 August 202650 peakSunday 30 August 202646 peakMonday 31 August 202648 peak

September 2026

12 days as the curve, each the highest figure that day. Behind it, 256 hourly samples. Each dip is a night. Weekends are shaded.

01633496601 Sep03 Sep05 Sep07 Sep09 Sep11 SepTuesday 01 September 202638 peakWednesday 02 September 202641 peakThursday 03 September 202642 peakFriday 04 September 202642 peakSaturday 05 September 202656 peakSunday 06 September 202651 peakMonday 07 September 202644 peakTuesday 08 September 202642 peakWednesday 09 September 202653 peakThursday 10 September 202651 peakFriday 11 September 202661 peakSaturday 12 September 202654 peak

October 2026

Mysterious School was released on 16 Feb, 2023.

Not out yet.There is nothing to draw for this month.
Nothing here is interpolated or estimated; where a sample is missing the line is broken.

Game information

Free to playUpdated 12 Sep 2026, 20:56 UTC
App ID
2084940
Last updated
23 Dec 2024 build 16833572
Developer
DuoDuoDog
Publisher
DuoDuoDog
Release date
16 Feb, 2023
Platforms
Windows
Download size
6.51 GB
Install size
6.81 GB
Genres
Casual, Indie, Massively Multiplayer, Free To Play
Game modes
Single-player, Multi-player, Co-op, Online Co-op, LAN Co-op
Controller support
Unknown
Achievements
22

Features & support

Steam features

Family Sharing

Controllers & input

Accessibility

Popular tags

Massively MultiplayerPsychological HorrorThrillerCasualFemale ProtagonistMystery3DThird-Person ShooterActionRPGParty-Based RPGPuzzleMMORPG3D PlatformerFPSOnline Co-OpDungeon CrawlerCuteRealisticFirst-Person
About this gameFull description from Steam
[Background Story] In this town lies an abandoned school that has been deserted for years, after a tragic incident that occurred there. A beautiful young girl committed suicide inside the school, leaving many people deeply saddened by the news. However, strange occurrences started to happen in the school after that. Every night at midnight, an identical girl to the one who had committed suicide would appear in the school cafeteria. She would sit there for an hour before disappearing, leaving the same message every time: "I want to go home." Even more mysterious, people would sometimes catch a glimpse of her in various corners of the school, only to have her disappear in the blink of an eye. Many students and teachers were afraid of these occurrences and didn't dare venture out at night. Some believe that this is the girl's soul searching for the way home, seeking help rather than threatening anyone. Regardless, everyone in the school hopes that her soul can find its way home and rest in peace. [Gameplay] In this horror game, you need to work together with your team to find and destroy the evil items that manipulate the girl, in order to rescue her soul. Of course, if you are brave enough, you can also complete this task alone. The girl won't always be chasing you; her appearance is governed by different rules. There are five different talismans in the game, each with its own power. You need to observe the situation at all times because the rules change in different stages. Once you break the rules, you will be in big trouble. The game not only includes the task of breaking the curse, but you can also find other interesting things around the campus. You can go to the basketball court to shoot some hoops, or use the basketball to scare the chickens. There's also a storage room that seems to contain some fireworks. See if you can find it and have a fireworks party with your friends in the schoolyard. [Game Features] Fun hide-and-seek gameplay Players need to be aware of the changing rules and avoid traps set by their teammates, using different strategies and plans to evade the pursuit of evil ghosts. Besides hiding, players can also use the environment to cover themselves, increasing their chances of survival. Random paranormal events Random and creepy paranormal events can occur in the game, such as encountering a funeral procession in a dark hallway, experiencing eerie illusions in the infirmary, or being trapped in a locked room, increasing the excitement of the game. Huge map The game map includes a complete school environment, including various classrooms, laboratories, infirmaries, offices, cafeterias, dormitories, security rooms, and basketball courts, allowing players to experience the game in a realistic setting. Multiplayer experience The game can be played by multiple people simultaneously, with players able to form teams to solve puzzles or play independently and freely explore the entire school. Rich storyline The background story of the game is captivating, with the main characters needing to unravel the story behind it and uncover clues to break the curse.
Content & age ratings2 regional ratings

Regional ratings

DEJUS10Violência
IGRS13Kekerasan · Interaksi Daring
System requirementsMinimum and recommended hardware

Minimum

Minimum: OS *: Windows 7 (x64) Processor: Intel Core i3-4160 Memory: 8 GB RAM Graphics: Nvidia Geforce GTX 960 Storage: 6000 MB available space

Recommended

Recommended: OS: Windows 10 (x64) Processor: Intel Core i7-7700 Memory: 16 GB RAM Graphics: Nvidia Geforce GTX 1060 Network: Broadband Internet connection Storage: 8000 MB available space
Supported languages8 languages
LanguageFull audio
English
Simplified Chinese●
French
Italian
German
Russian
Japanese
Korean

A blank audio cell means full audio was not marked in the returned language list.

Screenshots & trailersScreenshots and trailers
AchievementsTotal count and selected achievements

22 achievements in total.

Show selected achievements (may contain spoilers)
初探乾坤Achievement
学校管理员Achievement
校园传说Achievement
请勿打扰Achievement
单枪匹马Achievement
兄弟齐心Achievement
非人类玩家Achievement
我是你爹Achievement
痛苦的灼烧Achievement
你惊扰了WitchAchievement

View all Steam achievements

11 developer announcements, Feb 2023 to Dec 2024 · times in UTC

December

  1. 修复私人房间和公开房间弄反的问题

    还有麦克风音量调节不可用的问题

    Patch notes
  2. 加强角色技能,增加麦克风设置,优化游戏性能

    增加准备大厅开关麦克风提示 增加麦克风输入设备选择,在游戏设置和大厅里面都可以修改,修改后需要重启。 试麦功能 猴哥金箍棒减少CD为3秒一棍 修复公用回魂符可无限使用的BUG 增加了相机电量 修复有人掉线后钥匙可能会消失的BUG 大厅内现在可以显示每个玩家的ping,如果Ping过高可能导致游戏很卡和掉线 更换群号 为所有骨架网格体设置了lod,提升游戏优化 增加自定义房间名字功能 房间信息增加显示难度功能 修复成就不能解锁

    Patch notes
  3. 修复BUG并增加2个新角色,增加了私人房间

    修复了房间只显示一个的BUG,修复匹配闪退的问题,增加了私人房间

    Patch notes
  4. 修复大厅UI点不动的问题,以及部分可能导致游戏卡死的BUG

    大家有问题可以加社区经理QQ2309958284反馈

    Patch notes
  5. not just free! we will also update new content for free!

    I don't understand why everyone is talking about "Paranormal Campus" stabbing players in the back, as if this free offering is doomed to bring more bad than good for old players. Twenty months ago, "Paranormal Campus" embarked on its…

    笔下无江南

November

  1. “Mysterious School”Will Be Transformed into a Free Game

    Dear players: Hello everyone! First of all, we would like to express our sincere gratitude to each and every one of you for your support and love for the game "Haunted Schoolyard". It was your enthusiasm that made this game have a wonderful…

    笔下无江南

September

  1. "Mysterious School" - Uncover the Horrors Within

    🏫 The Dark Side of Campus 🏫 "Mysterious School" transports you to a time-forgotten institution, steeped in an eerie atmosphere that defies explanation. Every corner of this campus conceals dreadful secrets, yearning to be unveiled. Traverse…

    NB666

February

  1. 重大更新,大幅度提升游戏体验

    整体 1.加入道具 回魂符 功能:全体阵亡后,弹出一段文字 队友已全部阵亡,按R使用回魂符。倒计时30秒,完了后退出游戏。 获取方式:简单难度开局就三张,在背包里面显示 地图里面刷三张 普通两张 地图刷一张 最高难度无 2.加入道具 聚宝箱 功能:一把游戏结束后,弹出一个提示 你已获得聚宝箱可以在下一局使用。存档 在准备界面加入一个 使用聚宝箱的按钮 只有房主有聚宝箱才能点。其他人也显示这个按钮,点击后提示“只有房主能使用”…

    Patch notes
  2. 上线第一天的更新说明。感谢大家的支持!!!

    首先感谢各位对我们的支持,尽管我们已经在上线之前进行了一次大规模测试,但因为没啥经验这次测试没做好,在这里向大家道歉,我们会努力的把这个游戏做好。等现在这个地图稳定后我们会抓紧推出新的地图。从16号早上起床到现在我们总共睡了三个小时,对大家所提的问题进行了爆肝修复。本次更新解决了以下问题: 房间列表点击下一页未刷新的问题 你干嘛哎呀 只要一个人解锁了全体都会解锁,改成单人解锁 只因也是一样的问题已解决 角色在食堂死亡后客户端门还是关闭状态 正常门开门声变成铁门声音…

    Patch notes

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