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Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea-

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App ID 938240
App Type Game
Developer
Publisher DLsite
Supported Systems Windows
Technologies WolfRPGEditor Engine
Last Changenumber 28980806
Last Record Update 14 May 2025 – 12:47:40 UTC ()
Release Date 27 September 2018 – 01:04:33 UTC ()
❓ 75.44%
23 reviews
0
In-Game

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.

Steam price history

Current Price $6.99
Lowest Recorded Price $2.99 at -50% 11 October 2019
Currency Current Price Converted Price Lowest Recorded Price
U.S. Dollar $6.99 $6.99 $2.99 $2.99 at -50%
Russian Ruble 175 ₽ $2.21 -68.28% $0.97 77 ₽ at -50%
Brazilian Real R$ 14,49 $2.66 -61.83% $1.13 R$ 6,19 at -50%
Kazakhstani Tenge 1400₸ $2.69 -61.43% $1.20 625₸ at -50%
Indian Rupee ₹ 259 $3.02 -56.71% $1.27 ₹ 109 at -50%
Ukrainian Hryvnia 129₴ $3.08 -55.80% $1.41 59₴ at -50%
Indonesian Rupiah Rp 52999 $3.27 -53.18% $1.51 Rp 24499 at -50%
South African Rand R 58.00 $3.30 -52.77% $1.47 R 26.00 at -50%
Colombian Peso COL$ 13490 $3.37 -51.68% $1.48 COL$ 5950 at -50%
Vietnamese Dong 90000₫ $3.43 -50.80% $1.52 40000₫ at -50%
Chilean Peso CLP$ 3300 $3.56 -49.00% $1.51 CLP$ 1400 at -50%
Philippine Peso ₱219.95 $3.90 -44.13% $1.68 ₱94.97 at -50%
Chinese Yuan ¥ 28 $3.90 -44.10% $1.81 ¥ 13 at -50%
South Asia - USD $3.99 $3.99 -42.92% $1.74 $1.74 at -50%
Uruguayan Peso $U165 $4.11 -41.09% $1.74 $U70 at -50%
Malaysian Ringgit RM17.50 $4.16 -40.36% $1.84 RM7.75 at -50%
Saudi Riyal 15.95 SR $4.25 -39.16% $1.85 6.97 SR at -50%
Thai Baht ฿139.00 $4.29 -38.52% $1.83 ฿59.50 at -50%
Peruvian Sol S/.15.50 $4.35 -37.64% $1.89 S/.6.75 at -50%
Mexican Peso Mex$ 82.49 $4.39 -37.12% $1.81 Mex$ 33.99 at -50%
CIS - U.S. Dollar $4.69 $4.69 -32.90% $1.99 $1.99 at -50%
Kuwaiti Dinar 1.45 KD $4.75 -32.03% $2.03 0.62 KD at -50%
Taiwan Dollar NT$ 138 $4.76 -31.88% $2.03 NT$ 59 at -50%
Hong Kong Dollar HK$ 38.00 $4.84 -30.75% $2.22 HK$ 17.50 at -50%
Qatari Riyal 17.99 QR $4.94 -29.31% $2.19 7.99 QR at -50%
Japanese Yen ¥ 720 $5.01 -28.32% $2.15 ¥ 310 at -50%
Norwegian Krone 52,00 kr $5.16 -26.08% $2.06 20,75 kr at -50%
New Zealand Dollar NZ$ 8.89 $5.40 -22.66% $2.30 NZ$ 3.79 at -50%
South Korean Won ₩ 7500 $5.52 -20.90% $2.39 ₩ 3250 at -50%
U.A.E. Dirham 21.00 AED $5.71 -18.21% $2.38 8.75 AED at -50%
Canadian Dollar CDN$ 7.99 $5.87 -15.94% $2.45 CDN$ 3.34 at -50%
Singapore Dollar S$7.50 $5.89 -15.72% $2.55 S$3.25 at -50%
Costa Rican Colon ₡3300 $6.53 -6.54% $2.77 ₡1400 at -50%
Australian Dollar A$ 9.95 $6.54 -6.39% $2.79 A$ 4.25 at -50%
Euro 5,69€ $6.71 -3.98% $2.93 2,49€ at -50%
LATAM - U.S. Dollar $6.99 $6.99 $6.99 $6.99
MENA - U.S. Dollar $6.99 $6.99 $6.99 $6.99
Polish Zloty 25,49zł $7.05 +0.89% $3.04 10,99zł at -50%
British Pound £5.19 $7.07 +1.22% $3.25 £2.39 at -50%
Israeli New Shekel ₪25.95 $7.69 +10.11% $3.25 ₪10.97 at -50%
Swiss Franc CHF 7.25 $9.15 +31.00% $3.78 CHF 3.00 at -50%
Valve suggested prices are shown on package pages.

Price history

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View lowest recorded prices on Steam store pages by using our browser extension.

Additional Information

Developer AlchemyBlue
metacritic_name Cthulhu Mythos RPG -The Sleeping Girl of the Miasma Sea-
controller_support partial
GameManualURL https://store.steampowered.com/manual/938240/
ReleaseState released
Publisher DLsite
Store Release Date 27 September 2018 – 01:04:42 UTC ()
osarch empty string
community_hub_visible Yes
Primary Genre RPG (3)
Store Genres Indie (23), RPG (3)
Steam Release Date 27 September 2018 – 01:04:33 UTC ()
Store Asset Modification Time 28 July 2021 – 01:04:44 UTC () (1627434284)
library_assets
library_capsuleen
library_heroen
library_logoen
logo_position ↴
pinned_positionBottomLeft
width_pct50
height_pct100
review_score 7
review_percentage 91
Detected Technologies (?) WolfRPGEditor Engine
Steam Deck Compatibility
  • Steam Deck:
  • Some functionality is not accessible when using the default controller configuration, requiring use of the touchscreen or virtual keyboard, or a community configuration
  • This game sometimes shows mouse, keyboard, or non-Steam-Deck controller icons
  • This game does not exit cleanly and may require you to manually quit via the Steam overlay
  • In-game interface text is legible on Steam Deck
  • This game's default graphics configuration performs well on Steam Deck
  • Note: This game does not default to external Bluetooth/USB controllers on Deck, and may require manually switching the active controller via the Quick Access Menu
  •  
  • SteamOS:
  • This game runs successfully on SteamOS
  • Note: Some functionality is not accessible when using the default controller configuration, requiring use of the touchscreen or virtual keyboard, or a community configuration
  • Note: This game does not exit cleanly and may require you to manually quit via the Steam overlay
  • Note: This game does not default to external Bluetooth/USB controllers on SteamOS, and may require manually switching the active controller via the Quick Access Menu
  •  
  • category: Playable
  • steamos_compatibility: Compatible
  • test_timestamp: 30 January 2024 – 00:00:00 UTC
  • tested_build_id: 7309171
  • configuration:
    supported_inputgamepad
    requires_manual_keyboard_invoke0
    requires_non_controller_launcher_nav0
    primary_player_is_controller_slot_01
    non_deck_display_glyphs1
    small_text0
    requires_internet_for_setup0
    requires_internet_for_singleplayer0
    recommended_runtimeproton-stable
    requires_h2640
    requires_voice_files0
    gamescope_frame_limiter_not_supported1
    hdr_support0
First seen on SteamDB 4 September 2018 – 08:22:17 UTC (), in changelist #5033461

Supported Languages

1 Languages Interface Full Audio Subtitles
English Yes Yes

Assets

Load all asset images
clienticon 60537a984ff7206efca3ed71f302bd943b9390ab
clienttga 81634997cd340abd5e47abee211df363f15d5249
icon f023a6055f945210c9175321a9b69aaa9850eedd
logo 2f2600ebb84b50f56c45824c078d7a52b148941b
logo_small 2f2600ebb84b50f56c45824c078d7a52b148941b_thumb
small_capsule
englishcapsule_231x87.jpg
header_image
englishheader.jpg
library_assets_full
library_capsule ↴
image/englishlibrary_600x900.jpg
image2x/englishlibrary_600x900_2x.jpg
library_hero ↴
image/englishlibrary_hero.jpg
image2x/englishlibrary_hero_2x.jpg
library_logo ↴
image/englishlogo.png
image2x/englishlogo_2x.png
logo_position/pinned_positionBottomLeft
logo_position/width_pct50
logo_position/height_pct100
Assets
main_capsulecapsule_616x353.jpg
small_capsulecapsule_231x87.jpg
headerheader.jpg
hero_capsulehero_capsule.jpg
library_capsulelibrary_600x900.jpg
library_capsule_2xlibrary_600x900_2x.jpg
library_herolibrary_hero.jpg
library_hero_2xlibrary_hero_2x.jpg
community_iconf023a6055f945210c9175321a9b69aaa9850eedd.jpg
page_background_pathapp/938240
timestamp28 July 2021 – 01:05:33 UTC
Trailers
256809791 ↴
trailer_namenew_trailer
trailer_category0
trailer_480p/video/webm256809791/movie480_vp9.webm
trailer_480p/video/mp4256809791/movie480.mp4
trailer_max/video/webm256809791/movie_max_vp9.webm
trailer_max/video/mp4256809791/movie_max.mp4
microtrailer/video/webm938240/327125/770c43104973c948d76b65f0b097ea0bf72c63ff/1751166377/microtrailer.webm
microtrailer/video/mp4938240/327125/770c43104973c948d76b65f0b097ea0bf72c63ff/1751166377/microtrailer.mp4
screenshot_medium256809791/movie.293x165.jpg
screenshot_full256809791/movie_full.jpg
trailer_base_id327125
all_agestrue
is_highlighttrue
timestamp1605590931
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