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Marshmallow Imouto Succubus

App ID 2243980
App Type Game
Developer
Publisher Sekai Project
Supported Systems Windows
Technologies KiriKiri Engine
Last Changenumber 29010099
Last Record Update 15 May 2025 – 19:24:39 UTC ()
Release Date 22 September 2023 – 18:55:19 UTC ()

Tsukikawa Keisuke had a strange dream. That dream involved his younger sister but instead of her usual, innocent self, she had lust in her eyes. So he finds out that a succubus lurks within her! How will he choose between his innocent sister and the allure of a lustful succubus?!

Steam price history

Current Price $19.99
Lowest Recorded Price $9.99 at -50% 3 March 2025
Currency Current Price Converted Price Lowest Recorded Price
U.S. Dollar $19.99 $19.99 $9.99 $9.99 at -50%
South Asia - USD $8.19 $8.19 -59.03% $4.09 $4.09 at -50%
Russian Ruble 710 ₽ $9.04 -54.75% $4.52 355 ₽ at -50%
Kazakhstani Tenge 5200₸ $9.74 -51.25% $4.87 2600₸ at -50%
Ukrainian Hryvnia 415₴ $9.93 -50.30% $4.95 207₴ at -50%
Vietnamese Dong 260000₫ $9.94 -50.26% $4.97 130000₫ at -50%
Indian Rupee ₹ 880 $10.19 -49.00% $5.09 ₹ 440 at -50%
Indonesian Rupiah Rp 165999 $10.20 -48.96% $5.10 Rp 82999 at -50%
CIS - U.S. Dollar $10.49 $10.49 -47.52% $5.24 $5.24 at -50%
LATAM - U.S. Dollar $10.49 $10.49 -47.52% $5.24 $5.24 at -50%
MENA - U.S. Dollar $10.49 $10.49 -47.52% $5.24 $5.24 at -50%
South African Rand R 185.00 $10.53 -47.32% $5.26 R 92.50 at -50%
Chinese Yuan ¥ 76 $10.59 -47.01% $5.29 ¥ 38 at -50%
Brazilian Real R$ 59,99 $10.77 -46.10% $5.38 R$ 29,99 at -50%
Philippine Peso ₱615.00 $10.81 -45.92% $5.40 ₱307.50 at -50%
Saudi Riyal 40.95 SR $10.91 -45.39% $5.45 20.47 SR at -50%
Kuwaiti Dinar 3.35 KD $10.97 -45.08% $5.47 1.67 KD at -50%
Chilean Peso CLP$ 10500 $11.04 -44.75% $5.52 CLP$ 5250 at -50%
Taiwan Dollar NT$ 328 $11.15 -44.18% $5.57 NT$ 164 at -50%
Malaysian Ringgit RM49.00 $11.56 -42.13% $5.78 RM24.50 at -50%
Colombian Peso COL$ 47500 $11.79 -40.99% $5.89 COL$ 23750 at -50%
Peruvian Sol S/.43.00 $12.07 -39.58% $6.03 S/.21.50 at -50%
Qatari Riyal 43.99 QR $12.08 -39.55% $6.04 21.99 QR at -50%
Mexican Peso Mex$ 227.99 $12.23 -38.81% $6.11 Mex$ 113.99 at -50%
Thai Baht ฿400.00 $12.44 -37.72% $6.22 ฿200.00 at -50%
U.A.E. Dirham 53.00 AED $14.42 -27.82% $7.21 26.50 AED at -50%
Singapore Dollar S$18.50 $14.47 -27.60% $7.23 S$9.25 at -50%
Uruguayan Peso $U595 $14.80 -25.96% $7.38 $U297 at -50%
South Korean Won ₩ 21500 $15.57 -22.11% $7.78 ₩ 10750 at -50%
Japanese Yen ¥ 2300 $15.69 -21.49% $7.84 ¥ 1150 at -50%
Hong Kong Dollar HK$ 125.00 $15.92 -20.34% $7.96 HK$ 62.50 at -50%
Costa Rican Colon ₡8500 $16.85 -15.70% $8.42 ₡4250 at -50%
New Zealand Dollar NZ$ 28.99 $17.40 -12.95% $8.69 NZ$ 14.49 at -50%
Canadian Dollar CDN$ 25.99 $19.10 -4.43% $9.54 CDN$ 12.99 at -50%
Australian Dollar A$ 29.50 $19.33 -3.29% $9.66 A$ 14.75 at -50%
Norwegian Krone 220,00 kr $21.84 +9.26% $10.92 110,00 kr at -50%
Israeli New Shekel ₪73.95 $22.07 +10.43% $11.03 ₪36.97 at -50%
British Pound £16.75 $22.66 +13.38% $11.32 £8.37 at -50%
Euro 19,50€ $22.91 +14.64% $11.45 9,75€ at -50%
Polish Zloty 91,99zł $25.42 +27.19% $12.71 45,99zł at -50%
Swiss Franc CHF 21.99 $27.74 +38.81% $13.86 CHF 10.99 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 Orcsoft
ReleaseState released
Publisher Sekai Project
Store Release Date 22 September 2023 – 18:55:22 UTC ()
osarch empty string
community_hub_visible Yes
Primary Genre Adventure (25)
Store Genres Adventure (25), Casual (4)
Steam Release Date 22 September 2023 – 18:55:19 UTC ()
Store Asset Modification Time 22 September 2023 – 05:34:53 UTC () (1695360893)
library_assets
library_capsuleen,zh-cn,ja
library_heroen
library_logoen,ja,zh-cn
logo_position ↴
pinned_positionBottomLeft
width_pct50
height_pct50
osextended empty string
name_localized
japaneseましゅまろ☆いもうと☆さっきゅばす☆
schinese棉花糖☆妹妹☆魅魔
review_score 6
review_percentage 76
Detected Technologies (?) KiriKiri Engine, Vorbis SDK
Steam Deck Compatibility
  • Steam Deck:
  • Valve is still working on adding support for this game on Steam Deck
  •  
  • SteamOS:
  • Valve is still working on adding support for this game on SteamOS
  •  
  • category: Unsupported
  • steamos_compatibility: Unsupported
  • test_timestamp: 12 October 2023 – 00:00:00 UTC
  • tested_build_id: 12263374
  • configuration:
    supported_inputother
    requires_manual_keyboard_invoke0
    requires_non_controller_launcher_nav0
    primary_player_is_controller_slot_00
    non_deck_display_glyphs0
    small_text0
    requires_internet_for_setup0
    requires_internet_for_singleplayer0
    recommended_runtimeproton-8.0-4
    requires_h2640
    requires_voice_files0
    gamescope_frame_limiter_not_supported0
    hdr_support0
Content Descriptors Some Nudity or Sexual Content (1), General Mature Content (5)
First seen on SteamDB 6 December 2022 – 02:37:59 UTC (), in changelist #16973868
Content Descriptors (Including DLC) Some Nudity or Sexual Content (1), General Mature Content (5)

Supported Languages

3 Languages Interface Full Audio Subtitles
English Yes Yes
Japanese Yes Yes Yes
Simplified Chinese Yes Yes
clienticon 22e3d409764c8b5a6e64c3b2a221a898e53643cb
clienttga 39f846a938aa3e62b264349b1e3c96127e177c73
icon 1f76ef444f068a0e6512dd3d307e496f085ebd82
small_capsule
englishcapsule_231x87.jpg
japanesecapsule_231x87_japanese.jpg
schinesecapsule_231x87_schinese.jpg
header_image
englishheader.jpg
schineseheader_schinese.jpg
japaneseheader_japanese.jpg
library_assets_full
library_capsule ↴
image/englishlibrary_600x900.jpg
image/schineselibrary_600x900_schinese.jpg
image/japaneselibrary_600x900_japanese.jpg
image2x/englishlibrary_600x900_2x.jpg
image2x/schineselibrary_600x900_schinese_2x.jpg
image2x/japaneselibrary_600x900_japanese_2x.jpg
library_hero ↴
image/englishlibrary_hero.jpg
image2x/englishlibrary_hero_2x.jpg
library_logo ↴
image/englishlogo.png
image/japaneselogo_japanese.png
image/schineselogo_schinese.png
logo_position/pinned_positionBottomLeft
logo_position/width_pct50
logo_position/height_pct50
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_icon1f76ef444f068a0e6512dd3d307e496f085ebd82.jpg
page_background_pathapp/2243980
timestamp11 October 2024 – 03:14:54 UTC
Trailers
256965636 ↴
trailer_nameTeaser Trailer
trailer_category0
trailer_480p/video/webm256965636/movie480_vp9.webm
trailer_480p/video/mp4256965636/movie480.mp4
trailer_max/video/webm256965636/movie_max_vp9.webm
trailer_max/video/mp4256965636/movie_max.mp4
microtrailer/video/webm2243980/600571/23ac0b76b052cccae2d83cb5351212a930d954e2/1751527706/microtrailer.webm
microtrailer/video/mp42243980/600571/23ac0b76b052cccae2d83cb5351212a930d954e2/1751527706/microtrailer.mp4
screenshot_medium256965636/movie.293x165.jpg
screenshot_full256965636/movie_full.jpg
trailer_base_id600571
all_agestrue
is_highlighttrue
timestamp1694222092
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