Yakuza is an action-adventure video game developed and published by Sega in 2005 for the Sony PlayStation 2. Sega announced that the budget for the game and its sequel together was 2.4 billion yen (21 million US dollars). This game is the first entry in the Yakuza series. A sequel, titled Yakuza 2, was released in Japan on December 7, 2006, and in North America and Europe on September 9, 2008 and September 19, 2008 respectively. The game was adapted into the video film Like a Dragon: Prologue (2006) and the feature film Like a Dragon (2007) directed by Takashi Miike. Many believe that the game itself is a spiritual successor to Sega's other critically acclaimed, but abandoned game series Shenmue.