Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea-
This Cthulhu Mythos RPG is a retro styled horror RPG containing modern elements. What terrors await you in the abandoned mansion...? Create the protagonist "YOU" to your liking. Select your companions and unravel the mystery of the mansion.
Last Updated: 9/29/2025
| Steam Price | $6.99 |
| Release Date | 9/26/2018 |
| Developer | AlchemyBlue |
| Publisher | DLsite |
| Steam App Id | 938240 |
Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea-
This Cthulhu Mythos RPG is a retro styled horror RPG containing modern elements. What terrors await you in the abandoned mansion...? Create the protagonist "YOU" to your liking. Select your companions and unravel the mystery of the mansion.
Last Updated: 9/29/2025
- Windows
- Mac
- Linux
- Steam Deck (Playable)
About Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea-
Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea- is an Indie, and RPG game developed by AlchemyBlue. On 9/26/2018, it was released on the Steam Store by DLsite.
It can be played and ran on Windows systems. At the moment, it is possible to play Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea- on the Steam Deck but some functionality may not be fully supported.
According to Steam’s category system, Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea- supports the following features:
- Single-player
- Steam Cloud
- Partial Controller Support
- Family Sharing
From the Steam community, Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea- has been tagged with the following user tags:
- JRPG
- Pixel Graphics
- RPG
- Lovecraftian
- Horror
- Indie
- 2D
Media & Sceenshots
Watch the featured video for Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea- and see the latest screenshots from the Steam Store.
Related Bundles
Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea- is included in 1 bundle in the Steam Store. Purchasing through a bundle can give a large discount off the game's base price if you are willing to purchase multiple apps all at once.
| Image | Name | Apps | Packages | Price | Actions |
|---|---|---|---|---|---|
 | DLsite All-In-One Bundle | 17 | 19 | $295.83 | View |
Related Packages
Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea- is referenced by 1 package in the Steam Store. A package (or sub) is simply an item that can be purchased on Steam.
| Name | Price | Actions |
|---|---|---|
| Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea- | $6.99 | View |
Discover Similar Games
Find a new game to play just like Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea- 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 Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea-.
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.
Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea- data has been sourced from:
- Valve Corporation. (2025, September 29). Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea- on Steam. Steam Store.
- Valve Corporation. (2025, September 29). Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea-. Steam Community Hub.