In March 2016, "Chumlee" Russell pleaded guilty to charges stemming from the discovery of an arsenal of weapons, marijuana, and other drugs by police at his home in Las Vegas. Following the success of "Pawn Stars", Leftfield Pictures created the following spinoffs of "Pawn Stars":   In addition, Leftfield created five similar series that follow the same format as "Pawn Stars":  In 2011, History launched "Pawn Stars: The Game" for play on Facebook. In June 2011, Rick Harrison's autobiography, "License to Pawn: Deals, Steals, and My Life at the Gold & Silver", was published by Hyperion Books. Harrison's autobiography details his childhood, some of the troubles he faced before he got into the pawning business, as well as anecdotes from his time at the Gold & Silver. Also, The Old Man, Corey, and Chumlee have their own chapters in the book, reflecting on their life and experiences at the pawn shop. In October 2011, the Redwood Hills Financial Group issued the "Modern Cash Prepaid MasterCard Limited Edition: Gold & Silver Pawn Shop" prepaid debit card, in a special tie-in with the Gold and Silver Pawn Shop. On September 5, 2012, it was announced that Bally Technologies would unveil a new slot machine featuring the cast of "Pawn Stars" the following month at the 2012 Global Gaming Expo. which took place October 2 to 4, 2012 in Las Vegas.