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B-Prison Unchain

Wishlist Follow Ignore Launch Unwatch Watch
App ID 4395030
App Type Game
Developer
Publisher Saikey Studios
Franchise Saikey Studios
Supported Systems Windows
Technologies RPGMaker Engine
Last Changenumber 39323160
Last Record Update 29 September 2026 – 22:45:05 UTC ()
Release Date 25 July 2026 – 01:24:36 UTC ()
❓ 81.17%
45 reviews
1
In-Game
🔞 Sexual Content 🥵 Hentai 🗺️ Adventure 🎲 RPG 🌸 JRPG

In this turn-based RPG, play as Misa, the supposedly strongest soldier in the Demon Realm, as she hunts down the legendary incubus Asmodeus. Battle through the succubi prison, recruit allies, and survive nasty traps, but beware! The enemies sent after you have plenty of tricks to slow you down!

Steam price history

Special Promotion, ends 8 October 2026
Current Price -20% $7.19
Lowest Recorded Price -20% $7.19 25 July 2026
Currency Current Price Converted Price Lowest Recorded Price
U.S. Dollar -20% $7.19 $7.19 $7.19 -20% $7.19
Ukrainian Hryvnia -20% 168₴ $3.73 -48.01% $3.73 -20% 168₴
Philippine Peso -20% ₱239.20 $3.81 -46.88% $3.81 -20% ₱239.20
Indonesian Rupiah -20% Rp 68399 $3.82 -46.80% $3.82 -20% Rp 68399
Indian Rupee -20% ₹ 375 $3.89 -45.82% $3.89 -20% ₹ 375
Russian Ruble -20% 336 ₽ $4.03 -43.95% $4.03 -20% 336 ₽
Vietnamese Dong -20% 109000₫ $4.19 -41.68% $4.19 -20% 109000₫
Chinese Yuan -20% ¥ 28.80 $4.29 -40.26% $4.29 -20% ¥ 28.80
Thai Baht -20% ฿148.00 $4.40 -38.74% $4.40 -20% ฿148.00
South African Rand -20% R 75.99 $4.55 -36.66% $4.55 -20% R 75.99
Malaysian Ringgit -20% RM18.79 $4.60 -36.01% $4.60 -20% RM18.79
CIS - U.S. Dollar -20% $4.63 $4.63 -35.61% $4.63 -20% $4.63
LATAM - U.S. Dollar -20% $4.63 $4.63 -35.61% $4.63 -20% $4.63
MENA - U.S. Dollar -20% $4.63 $4.63 -35.61% $4.63 -20% $4.63
SASIA - U.S. Dollar -20% $4.63 $4.63 -35.61% $4.63 -20% $4.63
Chilean Peso -20% CLP$ 4799 $4.88 -32.01% $4.88 -20% CLP$ 4799
Taiwan Dollar -20% NT$ 158 $4.95 -31.14% $4.95 -20% NT$ 158
Saudi Riyal -20% 18.79 SR $4.99 -30.57% $4.99 -20% 18.79 SR
Kazakhstani Tenge -20% 2288₸ $5.15 -28.24% $5.15 -20% 2288₸
Brazilian Real -20% R$ 27,19 $5.20 -27.65% $5.20 -20% R$ 27,19
Hong Kong Dollar -20% HK$ 42.40 $5.40 -24.85% $5.40 -20% HK$ 42.40
Kuwaiti Dinar -20% 1.68 KD $5.43 -24.35% $5.43 -20% 1.68 KD
Peruvian Sol -20% S/.19.00 $5.47 -23.81% $5.47 -20% S/.19.00
Qatari Riyal -20% 19.99 QR $5.48 -23.72% $5.48 -20% 19.99 QR
Mexican Peso -20% Mex$ 103.99 $5.69 -20.86% $5.69 -20% Mex$ 103.99
South Korean Won -20% ₩ 7720 $5.70 -20.58% $5.70 -20% ₩ 7720
Japanese Yen -20% ¥ 920 $5.82 -18.93% $5.82 -20% ¥ 920
Colombian Peso -20% COL$ 19599 $5.89 -18.03% $5.89 -20% COL$ 19599
Canadian Dollar -20% CDN$ 8.60 $6.04 -15.87% $6.04 -20% CDN$ 8.60
Uruguayan Peso -20% $U250 $6.20 -13.73% $6.20 -20% $U250
Singapore Dollar -20% S$7.99 $6.24 -13.14% $6.24 -20% S$7.99
New Zealand Dollar -20% NZ$ 11.40 $6.39 -11.03% $6.39 -20% NZ$ 11.40
U.A.E. Dirham -20% 23.59 AED $6.42 -10.66% $6.42 -20% 23.59 AED
Australian Dollar -20% A$ 10.20 $7.07 -1.65% $7.07 -20% A$ 10.20
Swiss Franc -20% CHF 6.36 $7.66 +6.63% $7.66 -20% CHF 6.36
Polish Zloty -20% 30,39zł $7.81 +8.66% $7.81 -20% 30,39zł
Euro -20% 7,35€ $8.26 +14.97% $8.26 -20% 7,35€
Costa Rican Colon -20% ₡3800 $8.31 +15.59% $8.31 -20% ₡3800
Israeli New Shekel -20% ₪25.59 $8.33 +15.86% $8.33 -20% ₪25.59
British Pound -20% £6.39 $8.43 +17.38% $8.43 -20% £6.39
Norwegian Krone -20% 84,00 kr $8.72 +21.41% $8.72 -20% 84,00 kr
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 RiceReng
community_visible_stats Yes
ReleaseState released
Publisher Saikey Studios
Store Release Date 25 July 2026 – 01:24:38 UTC ()
osarch empty string
community_hub_visible Yes
Social Media https://discord.com/invite/EaqZEsP3pV
https://x.com/SaikeyStudios
https://www.youtube.com/@saikeystudios/
Primary Genre RPG (3)
Store Genres Adventure (25), RPG (3)
Steam Release Date 25 July 2026 – 01:24:36 UTC ()
Store Asset Modification Time 21 July 2026 – 19:17:05 UTC () (1784661425)
library_assets
library_capsuleen
library_heroen
library_hero_bluren
library_logoen
library_headeren
logo_position ↴
pinned_positionBottomLeft
width_pct100
height_pct100
osextended empty string
review_score 7
review_percentage 94
Detected Technologies RPGMaker Engine, Greenworks SDK, NWJS SDK, NodeJS SDK
Steam Deck Compatibility
  • Steam Deck:
  • This game sometimes shows mouse, keyboard, or non-Steam-Deck controller icons
  • All functionality is accessible when using the default controller configuration
  • In-game interface text is legible on Steam Deck
  • 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: 26 August 2026 – 18:45:05 UTC
  • tested_build_id: 24209781
  • 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_text0
    requires_internet_for_setup0
    requires_internet_for_singleplayer0
    recommended_runtimeproton-stable
    requires_h2641
    requires_voice_files0
    gamescope_frame_limiter_not_supported0
    hdr_support0
    requires_proton_soundfonts0
controllertagwizard Yes
disable_user_media_upload empty string
First seen on SteamDB 3 February 2026 – 03:37:26 UTC (), in changelist #33608251
disable_user_facing_ugc 1

Supported Languages

4 Languages Interface Full Audio Subtitles Achievements
English Yes Yes Yes
Japanese Yes Yes Yes Yes
Simplified Chinese Yes Yes Yes
Traditional Chinese Yes Yes Yes

Assets

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header_image
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library_assets_full
library_capsule ↴
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library_hero ↴
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library_hero_blur ↴
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library_logo ↴
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logo_position/pinned_positionBottomLeft
logo_position/width_pct100
logo_position/height_pct100
library_header ↴
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Assets
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headercece63d67940d08ef8aa5f86494d6fcff5ed7a58/header.jpg
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library_herod45a4b5d5ecbce685450fb49e2a709505b0dc342/library_hero.jpg
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page_background_pathapp/4395030
raw_page_background51dfa04072a1d8148116dc6236424905992abc42/page_bg_raw.jpg
last_modified25 July 2026 – 01:24:37 UTC
timestamp25 July 2026 – 01:24:37 UTC

Trailer 1164700 ↴

trailer_name EN
trailer_category 0
microtrailer ↴
video/webm 4395030/1793368700/b66416cfe0d74172341112c040c7dd0771b1c351/1776692471/microtrailer.webm
video/mp4 4395030/1793368700/b66416cfe0d74172341112c040c7dd0771b1c351/1776692471/microtrailer.mp4
adaptive_trailers ↴
dash_av1 4395030/1793368700/b66416cfe0d74172341112c040c7dd0771b1c351/1776692471/dash_av1.mpd
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screenshot_full 257322839/93cd5b9425c3da844412814bd674c70bd2d0623b/movie_full.jpg
all_ages true
is_highlight true
timestamp 20 April 2026 – 13:47:08 UTC
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