gaming distributor for the Native American market. In 1998, IGT introduced Triple Play Draw Poker through its partnership with Action Gaming; and the Elvis themed slot machine. The new S2000 spinning reel slot machine system was brought to market in 1999. 2001–2012 In 2001, IGT became a member of Standard & Poor's 500 list. The company also continued to acquire gaming companies including Silicon Gaming and Anchor Gaming. The acquisition of Anchor Gaming resulted in doubling gaming operations revenue. During 2003, IGT acquired Acres Gaming. The company's bonuses and systems technology were a significant addition to IGT's games and systems products. In 2004, the company introduced its central determination system (CDS) as well as its Class II bingo games and systems to the Native American market. IGT Canada was established to serve the emerging Canadian lottery and gaming markets. In 2005, IGT celebrated its 25th anniversary as a publicly traded company and also acquired WagerWorks for its online gaming technology. It was also the year the company unveiled its first multi-level progressive MegaJackpots product, Fort Knox. In an effort to take advantage of emerging markets, new IGT offices were opened in Macau, Mexico and Russia. Group play and community bonus games were introduced to the marketplace in 2006 with the debut of Wheel of Fortune Special Edition. The company also celebrated the 10th anniversary of Wheel of Fortune slots, and the 20th anniversary of the Megabucks wide area progressive game. During the Global Gaming Expo in Las Vegas in 2006, IGT unveiled the M-P Series. The new multi-player concept focused on roulette and baccarat and was the first of the company's electronic multi-player table game products. In 2007, IGT worked to grow its Mexican gaming operation and product sales in the Japanese and Asian markets. In addition, a new IGT office was opened in China. Two intellectual property arrangements were also announced, these included an arrangement with Austrian-based Novomatic focusing on IGT's M-P Series multi-player product and with PureDepth, Inc. for its 3D-like, Multi-Layer Display (MLD) technology. IGT opened the Global Technology & Interoperability Center in Reno, Nevada, early in 2008. This first-of-its-kind research and testing center encompasses a facility, which is available for use by gaming manufacturers, customers and third-party gaming products manufacturers. The collaborative center focuses on product testing in a true-to-life casino atmosphere prior to market release. In an effort to diversify business and market opportunities in