# Mysterium \- Hidden Signs

Summer DB entity ID: 650f6d0d\-8c3f\-4fe3\-b140\-8ac83a1126fe

Steam App ID: 563300

The haunted manor still holds a few secrets…    In Hidden Signs, the first expansion for Mysterium, you must again try to clarify the circumstances of the ghost’s death\.  The plot thickens, as the psychics consider all\-new leads: 6 suspects, 6 locations and 6 objects\.    To help them in this task, the ghost has 42 new vision cards with which to communicate more effectively\.    Return to the manor – your seat at the séance table awaits…

## Game information

- Type: dlc

- Developer: Twin Sails Interactive, Playsoft

- Publisher: Twin Sails Interactive

- Release date: Jan 13, 2017

- Coming soon: false

- Free to play: false

- Parent Steam app: 556180

- Genres: Strategy

- Categories: Single\-player, Multi\-player, PvP, Online PvP, Co\-op, Online Co\-op, Cross\-Platform Multiplayer, Downloadable Content, In\-App Purchases, Family Sharing

- Platforms: windows

- Website: Not collected

- Screenshots: https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/563300/ss\_3e00ffa39f21857550222f575556c0443581efa9\.1920x1080\.jpg?t=1694001691

- Price: 199 minor units USD; discount 0%

- Price country: US

## Observed metrics

- Current players: Not collected

- Steam review count: 4

- Steam positive reviews: 4

- Steam negative reviews: 0

- Steam positive percentage: 100%

- Summer DB rating: No native votes

Review filters: \{"language":"all","review\_type":"all","purchase\_type":"all","filter\_offtopic\_activity":0\}

## Player history

[Seven-day chart data as Markdown](/api/v1/entities/650f6d0d-8c3f-4fe3-b140-8ac83a1126fe/player-metrics?days=7&format=markdown) · [JSON](/api/v1/entities/650f6d0d-8c3f-4fe3-b140-8ac83a1126fe/player-metrics?days=7)

Chart values are hourly observed maxima. The sampled 24-hour peak and missing intervals carry explicit coverage; history before collection is unknown.

## Sources and freshness

- Catalog membership: store\_catalog

- Catalog observed: 2026\-09\-28T16:58:32\.455488\+00:00

- Details observed: 2026\-09\-22T16:55:39\.812293\+00:00

- Player count observed: Not collected

- Reviews observed: 2026\-09\-22T16:55:40\.852261\+00:00

Full provenance: \{"urls":\{"price":"https://store\.steampowered\.com/app/563300/","catalog":"https://api\.steampowered\.com/IStoreService/GetAppList/v1/","details":"https://store\.steampowered\.com/app/563300/","players":null,"reviews":"https://store\.steampowered\.com/appreviews/563300"\},"price":"2026\-09\-22T16:55:39\.812293\+00:00","source":"steam","catalog":"2026\-09\-28T16:58:32\.455488\+00:00","country":"US","details":"2026\-09\-22T16:55:39\.812293\+00:00","players":null,"reviews":"2026\-09\-22T16:55:40\.852261\+00:00","language":"en","editorial":null,"membership":"store\_catalog","observations":\{"price":"e04b7a20\-776d\-4b86\-a675\-fb9167e857e0","catalog":"ada0bd90\-8634\-41fb\-86e2\-ce9cd44e88d5","details":"94ce3a3f\-791c\-42d7\-acb2\-a0af17de0292","players":null,"reviews":"25bb5383\-cc10\-4c1f\-ba21\-9e8af5c4218e"\},"reviewFilters":\{"language":"all","review\_type":"all","purchase\_type":"all","filter\_offtopic\_activity":0\}\}

Native rating methodology: \{"count":0,"average":null,"entityId":"650f6d0d\-8c3f\-4fe3\-b140\-8ac83a1126fe","revision":0,"observedAt":null,"methodology":"arithmetic\-v1","distribution":\[0,0,0,0,0,0,0,0,0,0\]\}

Steam reviews are not Summer DB votes. Missing data is not zero. Player counts are observations, not historical peaks. A supplemental record does not establish that a game was delisted.

[Steam store](https://store.steampowered.com/app/563300/) · [JSON](/api/v1/games/650f6d0d-8c3f-4fe3-b140-8ac83a1126fe)