メアリウム
少年が迷い込んだのは悪夢の水族館『メアリウム』。果たして彼は襲い来る異変を乗り越え、無事家に帰る事ができるのでしょうか?KOTAKE CREATE様の『8番のりば』を参考に、ドット絵で構成された2Dホラーゲームです。
Last Updated: 4/3/2026
メアリウム
少年が迷い込んだのは悪夢の水族館『メアリウム』。果たして彼は襲い来る異変を乗り越え、無事家に帰る事ができるのでしょうか?KOTAKE CREATE様の『8番のりば』を参考に、ドット絵で構成された2Dホラーゲームです。
Last Updated: 4/3/2026
- Windows
- Mac
- Linux
About メアリウム
メアリウム is an Adventure game developed by 群悠. On 1/20/2025, it was released on the Steam Store by 群悠.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
According to Steam’s category system, メアリウム supports the following features:
- Family Sharing
- Single-player
- Full controller support
From the Steam community, メアリウム has been tagged with the following user tags:
- Stealth
- Action-Adventure
- Horror
- Adventure
- Singleplayer
- 2D
- Exploration
Media & Sceenshots
Watch the featured video for メアリウム and see the latest screenshots from the Steam Store.

Related Packages
メアリウム is referenced by 1 package in the Steam Store. A package (or sub) is simply an item that can be purchased on Steam.
Discover Similar Games
Find a new game to play just like メアリウム through our curated lists. Steambase uses Steam's User Tag and Genre system (and other game stats) to curate a list of the best and most loved games similar to メアリウム.
Genres
Features & Categories
User Tags
Frequently Asked Questions
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Data is enriched, cleansed, verified, and updated in real-time to ensure we surface the most up-to-date information. Learn more about the Steambase approach to data collection.
メアリウム data has been sourced from:
- Valve Corporation. (2026, April 3). メアリウム on Steam. Steam Store.
- Valve Corporation. (2026, April 3). メアリウム. Steam Community Hub.