

B-Prison Unchain
RiceReng · 2026 · Sexual Content, Adventure, Hentai, RPG, JRPG
PC
Positive95% · 44
This game is free to play. Get it on Steam →
Screenshots
About B-Prison Unchain
One night in the demon world, a thief sneaks into the castle of the Demon King, seeking to steal treasure. However, the thief accidentally unleashes a legendary incubus by the name of Asmodeus.It is now Misa's duty, as the faithful soldier under Demon King Gilad's command, to protect the realm and Lord Gilad's power over the kingdom from Asmodeus's cunning schemes. Misa corners Asmodeus but Gilad stops her before she is about to obliterate him. Now Misa has to infiltrate Chastity Rock, a prison for succubi, and track down Asmodeus who uses his shape-shifting and absorption powers to stay hidden and grow stronger, feeding on other prisoners while plotting revenge. Will Misa be able infiltrate the prison and find out where Asmodeus is lurking before it's too late to stop him?In this turn-based RPG, play as Misa as she fights her way through Chastity Rock prison to track and take down Asmodeus. Meet comrades and rescue them from the bad guys so they can assist Misa in overcoming difficult challenges.Misa uses a diverse set of skills and attacks to defeat her opponents, dealing damage proportional to her magic power level in each fight. As you progress through the levels, the story advances and the challenges become trickier to overcome. Use your wit and planning to confront enemies with ingenuity and the necessary force.
Combat
Fight all kinds of demons that use debuffs to weaken and incapacitate Misa. If you lose, you will witness a brief cutscene and return to the stage progress screen, where you can retry the same level. If you win, you progress the story and bring Misa one step closer to her goal. Be sure to remove any negative status effects before proceeding.Replenish Strength
When magic power has dropped severely, you can replenish it by calling Warden Zaki on the Chapter map and entering a covenant of magic power exchange. Calling Warden Zaki for help will be unlocked after the first encounter.Bonus Costume
Upon clearing the story for the first time, Misa's bonus costume will be unlocked for the next run of the story, providing additional enrichment to the replay value.What Steam players say
Recent verbatim reviews from Steam — separate from playze.io community reviews below.
[後半に日本語レビューあり] [h1]Overconfidence Will Be Your Undoing: A Power-Unsealing H-SRPG[/h1] This is a turn-based H-SRPG in which the demon realm's supposedly strongest soldier infiltrates a prison built to hold succubi, hunting down a legendary shapeshifting incubus who has gone into hiding there. The premise is built around a heroine who normally keeps the vast majority of her power sealed away, gradually revealing her true strength as battles progress. The main appeal lies in the push-and-pull of releasing that sealed power. Spending action points to unseal it sends her stats climbing, but push the release too far and a gap opens up, making her more vulnerable to enemy H-attacks. Taking one permanently drains her magic power, and every subsequent battle grows more disadvantageous in a snowballing way. The more her confidence grows, the further she falls under this design, creating a tension that goes beyond a mere display of strength, and personally, this push-and-pull alone was enough to make the game genuinely "worth playing" to me. Getting bound triggers a mash-to-escape QTE, and the weaker she becomes, the more input the escape demands, with repeated failures forcing a hard cut t…16 found this helpful
Points for originality: The developer tried making a turn-based strategy game on RPGMaker. The result is that the UI and the gameplay systems are a confused mess; the gameplay is bad, and the core gameplay systems are obtuse and convoluted.3 found this helpful
Developed by RiceReng and published by Saikey Studios, B-Prison Unchain is a fantasy turn-based RPG that mixes strategic combat, character progression, and an anime-inspired narrative within a mature setting. Although its adult content is a defining aspect of the experience, the game also places considerable emphasis on storytelling and tactical gameplay. Players take control of Misa, an elite warrior serving Demon King Gilad, who is tasked with entering the notorious Chastity Rock prison after the legendary incubus Asmodeus escapes confinement. Asmodeus possesses the dangerous ability to disguise himself and absorb the strength of other demons, making him a growing threat that must be stopped before he gains enough power to plunge the Demon Realm into chaos. The game's story unfolds through a combination of exploration and combat as Misa ventures deeper into the prison's dangerous corridors. Along the way, she encounters imprisoned allies who can be rescued and recruited, giving the adventure a stronger sense of progression and reinforcing the idea that she is gradually building support against an increasingly powerful enemy. The prison itself is filled with hostile creatures, hi…1 found this helpful
Short but really quite good. It's fun, Misa is cute, the loss scenes are great~
Very good turn based combat, interesting mechanics, very original, a hidden gem. H content is baked into the turn based combat very well. There is probably a great review out here with all the tags. Don't forget to get the patch.
Misa is cute as a button! I love that bratty voice they gave to Misa, it suits her perfectly. Fight through the stages and progress the story, very straightforward. You win, story progresses. You lose, you still win by seeing Misa in various situations. You will never expect the twist at the ending. There is a bonus item to be obtained at the end for the second playthrough, look forward to it.
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