Decipher, Inc. is a gaming company based in Norfolk, Virginia, USA. Since 1993, has produced collectible card games and role-playing games.

Their first and longest-running offering is How to Host a Murder Mystery. Their other popular works have included many different card games:

• Star Trek Customizable Card Game (1994-Present)
• Star Wars Customizable Card Game (1995-2001)
• Young Jedi Collectible Card Game (1997-2001)
• Austin Powers Collectible Card Game (1999)
• Jedi Knights Collectible Card Game (2001)
• The Lord of the Rings Trading Card Game (2001-Present)
• .hack//ENEMY Trading Card Game (2003-2005)
• Beyblade Trading Card Game (2003)
• Megaman: NT Warrior Trading Card Game (2004-2005)
• WARS Trading Card Game (2004-2005)

They've also produced two role playing games:

• Star Trek RPG (2002-present)
• Lord of the Rings RPG (2002-Present)

From the start Decipher has been largely focused on creating games based on big, popular franchises. In 2001 they lost the rights to the Star Wars game to Wizards of the Coast, ending the long run of the Star Wars Customizable Card Game which was possibly one of their biggest games at the time. The first Lord of the Rings movie was released that same year, giving Decipher a quick replacement franchise to take over the spot. In 2003 they attempted to market to a younger crowd, to attempt to compete with [Yu-Gi-Oh] and all the similar games flooding that market. They created three different Anime based games, to varying degrees of success. In 2005 with the wavering success of the .hack and Mega Man (series) Mega Man cartoons, they were forced to cancel both lines. They also attempted in 2004 to re-release the extremely popular game mechanics of the Star Wars Customizable Card Game in the form of their first non-franchised card game, Wars. Unfortunately it didn't prove to be commercially successful, and was put on hold in 2005.

During 2005, with the overall decline of the gaming industry, the company suffered financial losses and was forced to layoff as many as 40 employees. With the game industry in a decline, Decipher's future had remained in doubt up until early 2006.

However, with a smaller group of employees, Decipher has been able to get back on track. Despite serious delays in products, expansions for both its Star Trek and Lord of the Rings have been released.