Sega clarified it stance on fan games based on Sonic the Hedgehog, saying they were fine as long as they don't make a profit.

Narrator: Sonic the Hedgehog famously went through a drastic ... Naka were tasked with creating a new mascot for Sega, a video-game company that was emerging as a popular contender to Nintendo.

Presenting Techopedia’s list of five Sonic the Hedgehog games which were canceled and the reasons why they were shelved.

"I'd never seen anything like that in a video game before," he says. Following the original release of Sonic the Hedgehog on 23 June in 1991, the game reportedly sold more than 15 million copies.