From Tolkien Gateway
Decipher, Inc. is a gaming company, founded in 1983. Their first games were puzzles (hence the name) and board games, but they later settled on trading card games. After losing the rights to Star Wars in 2001, they quickly found a replacement: The Lord of the Rings (film series). Their popular The Lord of the Rings Trading Card Game - usually referred to as "Decipher Cards" - lasted until 2007, when their license expired.
During this time, Decipher also ran the The Lord of the Rings Fan Club, and in 2002 they published The Lord of the Rings Roleplaying Game.