What was the worst selling console ever? What was Sega's biggest mistake? What Sega games are worth the most money? What is the rarest Sonic game ever? What is the rarest Sega game? What is the rarest console? What is the oldest Sega console? What is Sega's worst console? What is Sega's biggest franchise? What is Sega Sammy Holdings? What does Sega stand for? What does Sega Sammy Holdings own? What company bought out Sega? What companies are under Sega? Is Sega still profitable? How much is Sega Sammy worth? How much is a Sega worth now? How much did Sammy pay for Sega? Does Sega Sammy own Sonic? Are old Sega systems worth anything?