Castle of Blackwater

Top-down social deduction matches with magic, tasks, and betrayal

Castle of Blackwater · Released Mar 25, 2025

Action Casual Indie RPG Strategy Free To Play

Reviews: Very Positive; 91% of 180
Recent reviews: Not enough recent
Players: 0; daily peak, Nov 7, 2026
Steam Deck: Untested
Last update on Steam: 8 months ago; Feb 24, 2026
Minimum PC: Integrated; 3 GB RAM · 3 GB disk; Full requirements

What is Castle of Blackwater?

In this top-down multiplayer game, up to ten players are trapped in a dangerous castle. In each match, Protectors complete tasks and identify the Satanic, who sabotage and eliminate players, while Forgotten players can play both sides. Players use character abilities and proximity voice or text chat to coordinate or deceive; eliminated players collect souls as ghosts to buy team power-ups.

For you if...

+you like competitive matches built around deception and deduction
+you enjoy completing minigames while watching for saboteurs
+you want character abilities that affect group discussions

Not for you if...

−you prefer solo play over online group matches
−you dislike deceiving other players or being deceived

Screenshots and trailer

Castle of Blackwater system requirements

Minimum: Integrated, 3 GB RAM, 3 GB of disk space.

As published by the developer.

Can my PC run Castle of Blackwater?

Tell us your graphics card once and every game page will answer this for you.

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Minimum

OS: Windows 7 x64bit
Processor: Intel Core2 Duo 2.4ghz+
Graphics: Integrated graphics
Memory: 3 GB RAM
Storage: 3 GB available space
DirectX: Version 9.0
Notes: Proximity chat req: 10Mbps up/down

Does Castle of Blackwater have co-op or multiplayer?

Yes: co-op online; PvP online. There is no single-player mode.

Does Castle of Blackwater run on Steam Deck?

Untested Not yet tested by Valve on Steam Deck.

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows, macOS
Achievements: 29
Steam features: Family Sharing, In-app purchases
Languages: Full audio: English. Text only: French, Italian, German, Spanish - Spain, Dutch, Japanese, Korean, Polish, Russian, Simplified Chinese, Spanish - Latin America, Thai, Turkish, Vietnamese, Portuguese - Brazil.

Does Castle of Blackwater use AI-generated content?

Yes. The developers disclose AI-generated content on the game's Steam page:

Only the tutorial narration is AI voice generated.

The statement mentions: Voices

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 25, 2026. How to filter AI games on Steam