In October 2018, the Company completed the acquisition of Pinnacle Entertainment, Inc. ("Pinnacle"), a leading regional gaming operator (the "Pinnacle Acquisition"). In conjunction with the Pinnacle Acquisition, the Company divested the membership interests of certain Pinnacle subsidiaries which operated the casinos known as Ameristar Casino Resort St. Charles, Ameristar Casino Hotel Kansas City, Belterra Casino Resort and Belterra Park (referred to collectively as the "Divested Properties"), to Boyd Gaming Corporation ("Boyd"). Additionally, as a part of the transaction, (i) GLPI acquired the real estate associated with Plainridge Park Casino, and concurrently leased back the real estate assets to the Company (the "Plainridge Park Casino Sale-Leaseback") and (ii) a subsidiary of Boyd acquired the real estate assets associated with Belterra Park from a subsidiary of GLPI. In connection with the sale of the Divested Properties to Boyd as well as the Plainridge Park Casino Sale-Leaseback, the Pinnacle Master Lease, which was assumed by the Company concurrent with the closing of the Pinnacle Acquisition, was amended. The Pinnacle Acquisition added twelve gaming properties to our holdings and provides us with greater operational scale and geographic diversity.
In November 2018, we announced that the Company entered into a definitive agreement to acquire the operations of Greektown Casino-Hotel in Detroit, Michigan, subject to a triple net lease with VICI Properties, Inc. ("VICI"), a publicly-traded REIT, which we expect to close in the second quarter 2019. In January 2019, we acquired Margaritaville Casino Resort subject to a triple net lease with VICI (the "Margaritaville Lease"). Further, we have planned two development projects in Pennsylvania: Hollywood Casino York and Hollywood Casino Morgantown (a greenfield project), which are both Category 4 satellite gaming facilities. We anticipate that both of these development projects will be complete within 12-18 months after obtaining the necessary local and regulatory approvals.
In May 2017, we completed the acquisitions of 1st Jackpot Casino Tunica (f/k/a Bally's Casino Tunica) and Resorts Casino Tunica. In June 2015, we opened Plainridge Park Casino, an integrated racing and slots-only gaming facility in Plainville, Massachusetts, and in August 2015, we completed the acquisition of our first Las Vegas strip asset, Tropicana Las Vegas. In September 2015, we acquired Illinois Gaming Investors LLC (d/b/a Prairie State Gaming) ("Prairie State Gaming"), one of the largest VGT route operators in Illinois, which has since acquired four small VGT route-operators based in Illinois. In 2015, PIV launched our HollywoodCasino.com Play4Fun social gaming platform with Scientific Games Corporation, and in August 2016, we enhanced our social gaming offerings with the acquisition of Rocket Speed, Inc. ("Rocket Speed"), a leading developer of social casino games.