"Sonic the Hedgehog" is Sega's flagship franchise and one of the bestselling video game franchises, selling over by 2016 and grossing over . Series sales and free-to-play mobile game downloads totaled . The Genesis "Sonic" games have been described as representative of the culture of the 1990s and listed among the greatest of all time. Although later games, notably the 2006 series reboot, have been criticized for a perceived decline in quality, "Sonic" is influential in the video game industry and is frequently referenced in popular culture. The franchise is also known for its fandom that produces unofficial media, such as fan art and fangames.