Released Jul 24, 2026 $8.99 Positive Counts toward your Steam games

B-Prison Unchain

By RiceReng · published by Saikey Studios

Sexual ContentHentaiAdventure RPG JRPG Anime Female Protagonist Demons Turn-Based Tactics2DColorfulFantasy

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Reviews 37 Positive

Players now 0 Peak today 0

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B-Prison Unchain is a game tagged Sexual Content, Hentai and Adventure by RiceReng, released Jul 24, 2026. It has 37 Steam reviews (Positive). The Steam games most like it include Tear and the Library of Labyrinths, LAST EMBRYO -EITHER OF BRAVE TO STORY- and Hell's 8th Avenue: Miori's Mysterious Notebook.

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!

From the Steam page

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<a href="https://launchrivals.com/games/4395030-bprison-unchain"><img src="https://launchrivals.com/games/4395030/badge.png" alt="B-Prison Unchain launch date" width="320" height="84"></a>

<a href="https://launchrivals.com/games/4395030-bprison-unchain"><img src="https://launchrivals.com/games/4395030/badge.png?theme=light" alt="B-Prison Unchain launch date" width="320" height="84"></a>

Tear and the Library of Labyrinths 94% match · Sexual Content, Hentai, Adventure
LAST EMBRYO -EITHER OF BRAVE TO STORY- 88% match · Sexual Content, Hentai, Adventure
Hell's 8th Avenue: Miori's Mysterious Notebook 87% match · Sexual Content, Hentai, Adventure
Rebecca and the Sword of Nasty Curses 86% match · Sexual Content, Hentai, Adventure
Succubus Farm 85% match · Sexual Content, Hentai, Adventure
Forsaken Quartet 83% match · Sexual Content, Hentai, Adventure
Nightmare Knight ~Sacred Maiden & Fallen Magic~ 83% match · Sexual Content, Hentai, Adventure
Samurai Vandalism 83% match · Sexual Content, Hentai, Adventure
Little Witch Inuko 83% match · Sexual Content, Hentai, Adventure
My Life as a Cult Leader 82% match · Sexual Content, Hentai, Adventure

Steam data

Everything Steam lists for B-Prison Unchain · record updated 19 hours ago

Steam store

Overview

App ID4395030

Release dateJul 24, 2026

Last change number39970225

Last record update19 hours ago

App type: Game
Developer: RiceReng
Publisher: Saikey Studios
Steam profile: Counts toward game count and achievement totals · checked 1 day ago
Franchise: Saikey Studios
Website: saikeystudios.com

Windows

Steam Deck: Playable

Single-playerSteam AchievementsSteam CloudFamily Sharing

Prices

Price · US$8.99

On sale0 of 41regions right now

Lowest seen · US$8.99Oct 23, 2026

Checked7 hours agoin 41 regions

PeruS/.PEN

Every price change is kept from Oct 23, 2026 on. Pick a region below to compare.

Patches

Build	Branch	Updated
24209781	public	Jul 14, 2026

Depots

ID	Name	Systems	Size	Download	Manifest
4395031	— English	Windows	756.0 MB	623.4 MB	5597563179371805680
4395032	— Japanese	Windows	756.0 MB	623.4 MB	600696430169050149
4395033	— Schinese	Windows	766.1 MB	629.1 MB	4753520529615296881
4395034	— Tchinese	Windows	762.8 MB	627.3 MB	9152231039083989742

Branch	Build	Updated	Access
public	24209781	Jul 14, 2026	Open

Configuration

Install foldersteamapps/common/B-Prison Unchain

Executable	Arguments	Systems	Description
Game.exe		All

Space per player953.7 MB

Filesup to 1,000

Save locations1

Root	Path	Pattern	Systems
gameinstall	www/save/	*	All

Achievements

Achievements70 hidden

Most unlocked95.6%CHAINED

Rarest29.5%Demon World Unified: UNCHAINED

CHAINED The start of Misa's journey 95.6%
Cheap Imitation Show Asmodeus you haven't lost your strength 93.1%
Limth No More Defeat Queen Rimus, scattering her faction 51.1%
Puny Pini Put an end to Pini's empire 40.4%
At What Cost? Ask for Warden Saki's special mana recharge 38.9%
Crowd Favorite Emerge victorious from Chindoro's coliseum 33.6%
Demon World Unified: UNCHAINED Triumph over Asmodeus, completing the prison infiltration plan 29.5%