B-Prison Unchain — cheap CD keys, compare prices
Is it worth buying?
- The price is at or near its all-time low — a good time to buy.
Estimate based on public reviews (Metacritic/Steam) and price history — the final call is yours.
About the game
This turn-based RPG casts the player as Misa, reputedly the strongest fighter the Demon Realm has produced, hunting the incubus Asmodeus, a figure of legend. The path runs through a prison of succubi, offering chances to gain allies while avoiding cunning traps set by foes determined to slow her down. Developer RiceReng and publisher Saikey Studios released the game in 2026.
Best price today
€7.35
all-time low: official €7.35 near low
The cheapest B-Prison Unchain key right now costs €7.35 at Steam. The lowest price we have recorded for this game: €7.35.
The average low over the past 4 months was €7.81.
Prices as of
Steam best price Official store
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Listed seller price shown — payment fees may vary by method.
Lowest — official stores
€7.35
Jul 2026
Price history
last 73 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €7.35 | — |
| Sept 2026 | €9.19 | — |
| Aug 2026 | €7.35 | — |
| Jul 2026 | €7.35 | — |
Lowest in-stock price per month from our price history; the current month is the low so far.
How to activate your key
- Steam key — open the Steam client → Games → Activate a Product on Steam → enter the key. Stores with this activation: Steam
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All-time low so far: €7.35
System requirements
| Minimum | |
|---|---|
| OS | Windows® 7/8/8.1/10/11 |
| Processor | Intel Core2 Duo or better |
| Memory | 4 GB RAM |
| Graphics | DirectX 9/OpenGL 4.1 capable GPU |
| Storage | 2 GB available space |
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About this game — FAQ
Can B-Prison Unchain be played single-player?
Yes, B-Prison Unchain is a single-player game.
What languages does B-Prison Unchain support?
B-Prison Unchain is available in: English, Japanese, Simplified Chinese, Traditional Chinese.
Does B-Prison Unchain use Steam Cloud saves?
Yes, B-Prison Unchain uses Steam Cloud, so your saves sync across devices.
FAQ
Where is the cheapest place to buy a B-Prison Unchain key?
The cheapest B-Prison Unchain key is currently sold by Steam for €7.35. The lowest price we have ever recorded for this game: €7.35.
How much does B-Prison Unchain cost?
B-Prison Unchain currently costs from €7.35 — the cheapest offer across the stores we track.
Is Steam an official store or a keyshop?
Steam is an official store — keys come directly from the publisher or an authorized distributor.
Are keys from these stores legal?
Buying is legal — keys come from the grey market, so a small deactivation risk exists. So before paying, check the seller's buyer protection.
Which key region should I pick?
Global activates everywhere. Regional keys (Europe, North America, RU-CIS) only work on accounts from that region — use the Region filter to match your account.
What is an activation platform?
The service where the key activates — Steam, GOG, Epic or the publisher's platform. A key for one platform won't work on another, hence the separate filter.
What's the difference between editions?
Standard is the base game; Deluxe usually adds an expansion or bonus content. The edition filter shows exactly that variant, with no mixed prices.