Cthulhu Realms

64KS
Released Jul 1, 2016by Wise Wizard Games, LLCMostly Positive(73% of 233 Steam reviews)

Star Realms has gone insane! Introducing Cthulhu Realms! Are you zany enough to play the crazier and creepier cousin of Star Realms? Download and play today to find out why Cthulhu Realms is so crazily addictive!

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About Cthulhu Realms

Star Realms has gone insane! Introducing Cthulhu Realms! Are you zany enough to play the crazier and creepier cousin of Star Realms?

Download and play today to find out why Cthulhu Realms is so crazily addictive!

How to Play the Game:
In Cthulhu Realms, each player tries to drive their opponent insane or have more sanity than their opponents when the deck runs out.

Each player starts the game with a small deck comprised of initiates, goons and followers. Five cards from the deck form a row of available cards on the table; with more than two players, place three available cards between each pair of players.

Each turn, you start with five cards in hand, playing those cards in order to put locations into play, boost your own sanity or reduce that of others, collect conjuring power to acquire new cards, and remove cards from the game. You can use the power of your locations once each turn. At the end of your turn, discard any cards still in hand and all entities and artifacts that you played.

If you lose all of your sanity, you're out of the game. If you're the only one at the table who's still sane, you win. Otherwise, the game ends when the deck runs out and whoever has the most sanity wins.

Darwin Kastle is the designer of the popular Star Realms Deckbuilding Game, and with the digital release of Cthulhu Realms, he once again provides tons of playability for free, and a one-time upgrade to be able play with your friends and more on any device.

Free Version

• Drive people insane everywhere - play across devices.
• Crazyily addictive deckbuilding game.
• Tutorial teaches you how to make people crazy in minutes.
• Awesome, comical art.
• Play VS the AI.
• 8 silly campaign missions!

Full Game Additional Features

• Play the AI on 2 different difficulty settings.
• 8 more fun campaign missions.
• Battle your friends face to face with Pass and Play.
• Play against many more opponents online.
• Challenge a friend to online Player v Player combat

Cthulhu Realms is also available at your local game store as a physical card game from Tasty Minstrel Games.

Game details

Game details

Released
Platforms
Steam Deck
Playable
Steam rating
Mostly Positive (73%)

Age ratings

IGRS 18DEJUS 10STEAM_GERMANY 12

Languages

Cthulhu Realms player count & reviews

73% positive reviews all-time · 4 peak players in the last 30 days.

Cthulhu Realms — frequently asked questions

How many people play Cthulhu Realms?

Cthulhu Realms peaked at 4 concurrent players on Steam in the last 30 days (highest on Jul 11, 2026). The player chart on this page updates daily.

How can I get Cthulhu Realms at a discount?

Create a free price alert on this page and KingsPrice will email you when Cthulhu Realms drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.

System requirements

Minimum

Minimum:
  • OS *: Windows XP SP2+
  • Graphics: DX9 (shader model 2.0) capabilities; generally everything made since 2004 should work.

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