Decipher, Inc. is an American gaming company based in Norfolk, Virginia, US.
They began with three puzzles called "Decipher" then moved on to party games and Pente sets, but since 1994 produced collectible card and role-playing games.
Their longest-running offering is the How to Host a Murder Mystery series. Other popular works have included many different card games. Since 2002, Decipher has released two licensed role-playing games: Star Trek RPG and The Lord of the Rings Roleplaying Game.