Game show creator
Griffin created and produced the television game show Jeopardy!. In an Associated Press profile released prior to its debut, he explained the origins of the show:
My wife Julann just came up with the idea one day when we were in a plane bringing us back to New York from Duluth. I was mulling over game show ideas, when she noted that there had not been a successful 'question and answer' game on the air since the quiz show scandals. Why not do a switch, and give the answers to the contestant and let them come up with the question.
She fired a couple of answers to me: '5,280' and the question of course was how many feet in a mile. Another was '79 Wistful Vista.' That was Fibber and Molly McGee's address. I loved the idea, went straight to NBC with the idea, and they bought it without even looking at a pilot show.
The show, originally titled What's the Question?, premiered on NBC in 1964, with Art Fleming as host, and ran for 11 years. Griffin composed the 30-second music piece for the "Final Jeopardy!" round, which later became the theme song for the syndicated version hosted by Alex Trebek starting in 1984.
After 11 years on the air, NBC canceled Jeopardy! while it still had a year remaining on its network contract. The final episode aired on January 3, 1975. Wheel of Fortune, another game show created by Griffin, premiered the following Monday. The show became a cultural phenomenon when its nighttime syndicated version debuted in 1983. Around this period, Griffin composed the show's theme song, "Changing Keys," which was used in various forms until 2000 and returned in 2021. In 1989, the daytime Wheel of Fortune moved to CBS and returned to NBC from January to September 1991.
Two revivals of Jeopardy! were produced: a five-month run on NBC in 1978 and 1979 with Art Fleming, and a syndicated version starting September 10, 1984, hosted by Alex Trebek. Both Jeopardy! and Wheel of Fortune continue to air in syndication today.
In 1990, Griffin attempted to adapt the board game Monopoly into a game show, which was cancelled after 12 episodes. His final game show, Ruckus, aired from the Resorts International Hotel & Casino, which Griffin owned, in Atlantic City, New Jersey. The show aired locally in the New York metropolitan area. After 60 episodes, a contract dispute led to its cancellation before syndication, scrapping plans for national syndication. Reruns later aired on Game Show Network.
On May 6, 1986, Griffin sold his production company, Merv Griffin Enterprises, to Columbia Pictures Television for $250 million. At the time, it was the largest sale of an entertainment company owned by a single individual. Forbes declared Griffin the wealthiest Hollywood performer in history. He retained the title of creator for his game shows.
The success of Jeopardy! and Wheel of Fortune inspired spin-offs, including Wheel 2000 (1997—1998), Jep! (1998), and Rock & Roll Jeopardy! (1998–2001). Grffin also created Click (1997–1999) and co-developed Headline Chasers (1985–1986) with Wink Martindale. From 2007 to 2008, Merv Griffin Entertainment produced the syndicated game show Merv Griffin's Crosswords.
On May 14, 2003, Griffin received the Broadcast Music, Inc. President's Award at the annual Film and Television Awards for his contributions to game show music.