Sonic Team is probably Sega's most famous developer. Yuji Naka the man behind Sonic Team is responsible for the biggest and best games that Sega has ever had, and he had a part in making games "cool". As the name implies Sonic Team is responsible for the creation on Sonic the Hedgehog the only gaming mascot to ever rival Mario in popularity. Yuji Naka is also the man behind Sega's greatest RPG series, Phantasy Star. Some other greats Sonic Team has to its name include Nights and Burning Rangers.

Most recently Sonic Team has been concetrating on making Phantasy Star Online v1 & 2,for the Nintendo GameCube and XBox