Ready Up — what game do we play?Compare two Steam libraries →
Multiplayer games › Party & co-op › Social deduction

Is Castle of Blackwater multiplayer or co-op?

Yes — co-op and PvP. Castle of Blackwater is a social deduction game released in 2025, 97% positive on Steam (133 reviews), with 3 playing right now. Free on Steam.

Co-opPvPParty & co-op · Social deduction

Castle of Blackwater is a 2D, action-packed, social deduction game with a magical twist. In this intense game…

Steam tags: Real Time Tactics, Social Deduction, Strategy, Detective, Multiplayer, PvP, 2D, Funny

Do you and a friend both own Castle of Blackwater?

Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Castle of Blackwater is one of them — then helps you pick tonight's game with a weighted roll or a bracket.

Do you and a friend both own Castle of Blackwater?Free, no login — uses public Steam profiles.

Or open the Steam store page.

Games like Castle of Blackwater you can play together

Among Us
Social deduction · 92% positive on Steam (700,785 reviews) · 3,832 playing right now
Dread Hunger
Social deduction · 60% positive on Steam (46,185 reviews) · 751 playing right now
Deceit
Social deduction · 79% positive on Steam (93,027 reviews) · 155 playing right now
LOCKDOWN Protocol
Social deduction · 88% positive on Steam (14,866 reviews) · 411 playing right now
Town of Salem 2
Social deduction · 73% positive on Steam (7,784 reviews) · 382 playing right now
Town of Salem
Social deduction · 88% positive on Steam (36,409 reviews) · 117 playing right now

Tired of Castle of Blackwater? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.

Quick answers

Is Castle of Blackwater co-op?
Yes, Castle of Blackwater supports co-op.
Does Castle of Blackwater have PvP?
Yes, Castle of Blackwater has player-versus-player modes.
How many people play Castle of Blackwater?
About 3 players were in-game when this page was built (2026-09-09).

Ready Up is a free tool: enter two Steam usernames and it lists the multiplayer games you both own, runs a bracket to pick one, and suggests new co-op games that fit how you both play. Ratings, tags and player counts from Steam and SteamSpy; page updated 2026-09-09. Powered by Steam — not affiliated with or endorsed by Valve Corporation or Microsoft. How the data works · Legal & privacy · All types · Game Pass