according to Guinness
http://www.guinnessworldrecords.com/index.asp?id=51254
"The Dreamcast computer game titled Shenmue cost over $20 million to develop. The project took seven years to complete, and was the brainchild of Japanese developer Yu Suzuki, head of Sega's game-development AM2 division.
Sega was founded in 1951 and has since become a world leader in interactive digital entertainment. Sega says their future is about using cyberspace to create an out-of-this-world gaming environment. The mastermind of Shenmue, Yu Suzuki, began working for Sega in 1983 as a programmer and game producer, and a year later he created the world's first simulation arcade game, Hang On."