Shenmue is a 1999 action-adventure game developed by AM2 of CRI and published by Sega for the Dreamcast. It follows the teenage martial artist Ryo Hazuki as he sets out in revenge for the murder of his father in 1980s Yokosuka, Japan. From Wikipedia
The 1999 Sega Dreamcast classic is celebrated for its pioneering open-world design, though the poll's methodology has raised questions.