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Sisterly Bliss ~Don't Let Mom Find Out~

Wishlist Follow Ignore Launch Unwatch Watch
App ID 4093400
App Type Game
Developer
Publisher MangaGamer, Sunflower Ocean
Supported Systems Windows macOS Linux
Technologies PyGame Engine, RenPy Engine
Last Changenumber 39323160
Last Record Update 29 September 2026 – 22:49:08 UTC ()
Release Date 4 December 2025 – 04:59:43 UTC ()
❓ 84.78%
104 reviews
1
In-Game
📚 Visual Novel 👩 Female Protagonist 🏳️‍🌈 LGBTQ+ 🌸 Anime 🧞 Choices Matter

A light admonishment from Mom sparks the realization that these twin sisters care for each other in more than a familial sense. In this dramatic & romantic yuri Visual Novel, it's up to you to navigate the forbidden tension between the sisters so their love can flourish without growing one-sided.

Steam price history

Special Promotion, ends 8 October 2026
Current Price -30% $17.49
Lowest Recorded Price -30% $17.49 20 August 2026
Currency Current Price Converted Price Lowest Recorded Price
U.S. Dollar -30% $17.49 $17.49 $17.49 -30% $17.49
SASIA - U.S. Dollar -30% $5.94 $5.94 -66.04% $5.94 -30% $5.94
Indian Rupee -30% ₹ 770 $7.99 -54.27% $7.99 -30% ₹ 770
Ukrainian Hryvnia -30% 360₴ $8.01 -54.20% $8.01 -30% 360₴
Indonesian Rupiah -30% Rp 144899 $8.10 -53.67% $8.10 -30% Rp 144899
Philippine Peso -30% ₱535.50 $8.54 -51.12% $8.54 -30% ₱535.50
Vietnamese Dong -30% 224500₫ $8.63 -50.62% $8.63 -30% 224500₫
CIS - U.S. Dollar -30% $8.74 $8.74 -50.03% $8.74 -30% $8.74
LATAM - U.S. Dollar -30% $8.74 $8.74 -50.03% $8.74 -30% $8.74
MENA - U.S. Dollar -30% $8.74 $8.74 -50.03% $8.74 -30% $8.74
Taiwan Dollar -30% NT$ 285 $8.93 -48.94% $8.93 -30% NT$ 285
Chilean Peso -30% CLP$ 9100 $9.27 -47.00% $9.27 -30% CLP$ 9100
Saudi Riyal -30% 36.04 SR $9.57 -45.26% $9.57 -30% 36.04 SR
Chinese Yuan -30% ¥ 64.40 $9.60 -45.08% $9.60 -30% ¥ 64.40
Kuwaiti Dinar -30% 2.97 KD $9.61 -45.02% $9.61 -30% 2.97 KD
South African Rand -30% R 161.00 $9.64 -44.83% $9.64 -30% R 161.00
Brazilian Real -30% R$ 51,79 $9.90 -43.35% $9.90 -30% R$ 51,79
Kazakhstani Tenge -30% 4480₸ $10.10 -42.24% $10.10 -30% 4480₸
Thai Baht -30% ฿346.50 $10.31 -41.04% $10.31 -30% ฿346.50
Malaysian Ringgit -30% RM42.70 $10.45 -40.22% $10.45 -30% RM42.70
Qatari Riyal -30% 38.49 QR $10.55 -39.62% $10.55 -30% 38.49 QR
Peruvian Sol -30% S/.37.10 $10.69 -38.85% $10.69 -30% S/.37.10
Mexican Peso -30% Mex$ 198.09 $10.83 -38.02% $10.83 -30% Mex$ 198.09
Singapore Dollar -30% S$15.40 $12.03 -31.18% $12.03 -30% S$15.40
Colombian Peso -30% COL$ 41160 $12.37 -29.23% $12.37 -30% COL$ 41160
Japanese Yen -30% ¥ 1960 $12.41 -29.00% $12.41 -30% ¥ 1960
U.A.E. Dirham -30% 46.20 AED $12.57 -28.07% $12.57 -30% 46.20 AED
Uruguayan Peso -30% $U518 $12.85 -26.52% $12.85 -30% $U518
Hong Kong Dollar -30% HK$ 109.20 $13.91 -20.43% $13.91 -30% HK$ 109.20
South Korean Won -30% ₩ 18900 $13.97 -20.07% $13.97 -30% ₩ 18900
New Zealand Dollar -30% NZ$ 25.19 $14.13 -19.19% $14.13 -30% NZ$ 25.19
Canadian Dollar -30% CDN$ 22.75 $16.00 -8.51% $16.00 -30% CDN$ 22.75
Costa Rican Colon -30% ₡7350 $16.07 -8.09% $16.07 -30% ₡7350
Australian Dollar -30% A$ 25.55 $17.71 +1.28% $17.71 -30% A$ 25.55
Euro -30% 17,15€ $19.28 +10.28% $19.28 -30% 17,15€
British Pound -30% £14.69 $19.40 +10.93% $19.40 -30% £14.69
Norwegian Krone -30% 196,00 kr $20.36 +16.46% $20.36 -30% 196,00 kr
Polish Zloty 80,49zł $20.69 +18.31% $20.69 -30% 80,49zł
Israeli New Shekel -30% ₪65.06 $21.17 +21.10% $21.17 -30% ₪65.06
Swiss Franc -30% CHF 19.59 $23.61 +35.01% $23.61 -30% CHF 19.59
Russian Ruble N/A N/A $8.44 -20% 704 ₽
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 eyephon
ReleaseState released
Publisher MangaGamer
Store Release Date 4 December 2025 – 04:59:47 UTC ()
osarch empty string
community_hub_visible Yes
Primary Genre Adventure (25)
Store Genres Adventure (25), Indie (23)
Steam Release Date 4 December 2025 – 04:59:43 UTC ()
Store Asset Modification Time 3 November 2025 – 15:55:57 UTC () (1762185357)
library_assets
library_capsuleen,zh-cn
library_heroen
library_hero_bluren
library_logoen,zh-cn
library_headeren,zh-cn
logo_position ↴
pinned_positionCenterCenter
width_pct80.61699650756694
height_pct70.89764901448586
osextended macos64
name_localized
schinese双生百合～要对妈妈保密哦～
review_score 8
review_percentage 94
Detected Technologies PyGame Engine, RenPy Engine, Python SDK, SDL SDK
Steam Deck Compatibility
  • Steam Deck:
  • This game sometimes shows mouse, keyboard, or non-Steam-Deck controller icons
  • Some in-game text is small and may be difficult to read
  • All functionality is accessible when using the default controller configuration
  • This game's default graphics configuration performs well on Steam Deck
  •  
  • SteamOS:
  • This game runs successfully on SteamOS
  •  
  • category: Playable
  • steamos_compatibility: Compatible
  • steam_machine_compatibility: 2
  • test_timestamp: 28 January 2026 – 00:00:00 UTC
  • tested_build_id: 20283318
  • steam_machine_tests:
    0 ↴
    display3
    token#SteamMachine_TestResult_ControllerGlyphsDoNotMatchDevice
    1 ↴
    display4
    token#SteamMachine_TestResult_DefaultControllerConfigFullyFunctional
    2 ↴
    display4
    token#SteamMachine_TestResult_DefaultConfigurationIsPerformant
  • configuration:
    supported_inputother
    requires_manual_keyboard_invoke0
    requires_non_controller_launcher_nav0
    primary_player_is_controller_slot_00
    non_deck_display_glyphs1
    small_text1
    requires_internet_for_setup0
    requires_internet_for_singleplayer0
    recommended_runtimenative
    requires_h2640
    requires_voice_files0
    gamescope_frame_limiter_not_supported0
    hdr_support0
    requires_proton_soundfonts0
Content Descriptors General Mature Content (5)
controllertagwizard Yes
First seen on SteamDB 7 October 2025 – 06:27:59 UTC (), in changelist #31520199
Content Descriptors (Including DLC) General Mature Content (5)

Supported Languages

3 Languages Interface Full Audio Subtitles
English Yes Yes
Japanese Yes
Simplified Chinese Yes Yes

Assets

Load all asset images
clienticon ce77c8793e3f7732e93d02cf187c1cda780b9b5d
icon 3b91dd3ac3cafb673c22e65ce2c18ad1b6f39ba2
small_capsule
englisha6860a70cc98a2720178cdfee32b8c120f9513ae/capsule_231x87.jpg
schinese766a9e037eedb62b16719723493bd089213022f8/capsule_231x87_schinese.jpg
header_image
englisha83e73d9f302e9b4b5c181a7e7c4818344851fe3/header.jpg
schinese9a46eb1dbb40a958c27efad30a5f8c8c363f759a/header_schinese.jpg
library_assets_full
library_capsule ↴
image/english2f682c89abfd9deb76ed17569ee748f8f7d1f077/library_capsule.jpg
image/schinese80e55bf1f16fb364861ff81ea5e8440535139f59/library_capsule_schinese.jpg
image2x/english2f682c89abfd9deb76ed17569ee748f8f7d1f077/library_capsule_2x.jpg
image2x/schinese80e55bf1f16fb364861ff81ea5e8440535139f59/library_capsule_schinese_2x.jpg
library_hero ↴
image2x/english8cb57bfc073dbdec36b160193c7e1507227137cc/library_hero_2x.jpg
image/english8cb57bfc073dbdec36b160193c7e1507227137cc/library_hero.jpg
library_hero_blur ↴
image/english8cb57bfc073dbdec36b160193c7e1507227137cc/library_hero_blur.jpg
library_logo ↴
image/englisha2c51cfce58ab7b3969c6b6be12b2e3e2a8507a5/logo.png
image/schinese59e858127b53cb7fa4bc4d7117544c32c59dce95/logo_schinese.png
image2x/englisha2c51cfce58ab7b3969c6b6be12b2e3e2a8507a5/logo_2x.png
image2x/schinese59e858127b53cb7fa4bc4d7117544c32c59dce95/logo_schinese_2x.png
logo_position/pinned_positionCenterCenter
logo_position/width_pct80.61699650756694
logo_position/height_pct70.89764901448586
library_header ↴
image/englisha83e73d9f302e9b4b5c181a7e7c4818344851fe3/library_header.jpg
image/schinese9a46eb1dbb40a958c27efad30a5f8c8c363f759a/library_header_schinese.jpg
image2x/englisha83e73d9f302e9b4b5c181a7e7c4818344851fe3/library_header_2x.jpg
image2x/schinese9a46eb1dbb40a958c27efad30a5f8c8c363f759a/library_header_schinese_2x.jpg
Assets
main_capsuleb5f1b87a5575e049d645cf46ad1ed5cebee36d38/capsule_616x353.jpg
main_capsule_2xb5f1b87a5575e049d645cf46ad1ed5cebee36d38/capsule_616x353_2x.jpg
small_capsulea6860a70cc98a2720178cdfee32b8c120f9513ae/capsule_231x87.jpg
small_capsule_2xa6860a70cc98a2720178cdfee32b8c120f9513ae/capsule_231x87_2x.jpg
headera83e73d9f302e9b4b5c181a7e7c4818344851fe3/header.jpg
header_2xa83e73d9f302e9b4b5c181a7e7c4818344851fe3/header_2x.jpg
hero_capsule272dad620be4ef6d285010d5f622c41efe04a489/hero_capsule.jpg
hero_capsule_2x272dad620be4ef6d285010d5f622c41efe04a489/hero_capsule_2x.jpg
library_capsule2f682c89abfd9deb76ed17569ee748f8f7d1f077/library_capsule.jpg
library_capsule_2x2f682c89abfd9deb76ed17569ee748f8f7d1f077/library_capsule_2x.jpg
library_hero8cb57bfc073dbdec36b160193c7e1507227137cc/library_hero.jpg
library_hero_2x8cb57bfc073dbdec36b160193c7e1507227137cc/library_hero_2x.jpg
community_icon3b91dd3ac3cafb673c22e65ce2c18ad1b6f39ba2.jpg
page_background_pathapp/4093400
last_modified17 June 2026 – 16:50:29 UTC
timestamp17 June 2026 – 16:50:29 UTC

Trailer 1008042 ↴

trailer_name Sisterly Bliss intro
trailer_category 0
microtrailer ↴
video/webm 4093400/146555093/0d8a046dbd35a751f7a517e02ba9b0d7aa30239b/1760703073/microtrailer.webm
video/mp4 4093400/146555093/0d8a046dbd35a751f7a517e02ba9b0d7aa30239b/1760703073/microtrailer.mp4
adaptive_trailers ↴
dash_av1 4093400/146555093/0d8a046dbd35a751f7a517e02ba9b0d7aa30239b/1760703073/dash_av1.mpd
dash_h264 4093400/146555093/0d8a046dbd35a751f7a517e02ba9b0d7aa30239b/1760703073/dash_h264.mpd
hls_h264 4093400/146555093/0d8a046dbd35a751f7a517e02ba9b0d7aa30239b/1760703073/hls_264_master.m3u8
screenshot_medium 257219234/27ef3171d1b4ee7e2517ce8862cdef70b6d678fb/movie_600x337.jpg
screenshot_full 257219234/27ef3171d1b4ee7e2517ce8862cdef70b6d678fb/movie_full.jpg
all_ages true
is_highlight true
timestamp 4 December 2025 – 04:59:44 UTC
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