Sega is celebrating Sonic the Hedgehog's 20th anniversary this year and has pieced together a documentary detailing how the blue speedster came to be.

From Sonic's initial creation to rival battles with Nintendo's Mario and achievements since, the doco is an engrossing insight into the cutthroat gaming world of the 1990s. If you have a spare 36 minutes, check it out below.

Meanwhile, for an extra dose of nostalgic reminiscence, have a ganders at our Sonic Generations review and see what we thought about his latest outing here on Reg Hardware. ®