Shigeichi Ishimura, the son in-law of Nakamura, succeeded Takagi as Namco president on April 1, 2005; Nakamura retained his role as the company's executive chairman.[1] This was part of Namco's continuing efforts at reorganizing itself to be in line with changing markets.[164] On July 26, as part of its 50th anniversary event, Namco published NamCollection—a compilation of several of its PlayStation games—for the PlayStation 2 in Japan.[169] Namco also opened the Riraku no Mori, a companion to its Namja Town park that held massage parlors for visitors; Namco believed it would help make relaxation a source of entertainment.[170] The Idolmaster, a rhythm game that incorporated elements of life simulations, was widely-successful in Japan and resulted in the creation of a multi-million-grossing franchise.[171]