Munchkins have hacked their way through dungeons, kung fu temples, haunted houses, starships, and super-foes. Now they will face their greatest challenge – Cthulhu! Will they make it out? Will they keep their sanity? Will they...level up?

Munchkin Cthulhu is a standalone game in the Munchkin universe, this time lampooning Lovecraft's Mythos and the classic horror gaming that surrounds it. This base game contains four new Classes, including the Cultist, and a lot of classic monsters from outside reality – and they all have Stuff you can take from their twitching bodies. You can play Munchkin Cthulhu by itself, or use it with any number of other Munchkin titles for mind-bending silliness.

Munchkin is a satirical card game based on the various clichés and oddities of Dungeons and Dragons and other role-playing games. Each player starts at level 1 and the winner is the first one to reach level 10. Players can acquire familiar D&D style character classes during gameplay which determine to some extent the cards they can play.

There are two sorts of cards - treasure and encounters. Each turn the current player 'kicks down the door' - drawing an encounter card from the deck. Usually this involves battling a monster. Monsters will have their own levels and players must try and overcome it using the levels, weapons and powers they have acquired during the game or run away. Other players can decide to help the player or hinder by adding extra monsters to the encounter. Defeating a monster will usually give treasure cards and acquiring levels. Being defeated by a monster results in "bad stuff" which usually involves losing both levels and treasure.

The game includes 180 cards (92 Doors, 76 Treasures, 12 Seals). The Seal cards are a different size than the regular cards--they are square and are shorter but wider (2.75" x 2.75"). The included d6 dice is orange with lime green pips, similar in color to the orange dice in the +6 Bag o' Radioactive Munchkin d6.