 The game's development group was later established as Polyphony Digital.After five years of development time, it was well-received publicly and critically, shipping a total of 10.85 million copies worldwide as of March 2013 (making it the best-selling PlayStation game), and scoring an average of 95% in GameRankings' aggregate, making it the highest rated racing video game of all-time.Many publications have deemed it one of the greatest video games of all time.