From Green Hill Zone to the Hollywood films, test your knowledge of Sega's blue blur — the 16-bit era, Dreamcast classics, Sonic Mania, Frontiers and the Jim Carrey & Keanu Reeves movies.

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Born on 23 June 1991 on the Sega Genesis, Sonic the Hedgehog was engineered to take down Mario. Designer Naoto Ohshima gave him his cobalt-blue quills, programmer Yuji Naka built a physics engine fast enough to keep up, and level designer Hirokazu Yasuhara sent him looping through Green Hill Zone — the most iconic patch of pixel grass in gaming history. Within three years, Sonic 2, Sonic CD and Sonic 3 & Knuckles had turned Sega's mascot into a global icon and a serious commercial rival to Nintendo.
The cast grew fast. Tails, the twin-tailed fox, arrived in 1992. Knuckles the Echidna, guardian of the Master Emerald, followed in 1994. Amy Rose and Metal Sonic debuted in Sonic CD the same year. The Dreamcast era gave the series its 3D voice with Sonic Adventure (1998) and Sonic Adventure 2 (2001), introducing the brooding Shadow — later voiced by Keanu Reeves on screen — and treasure-hunter Rouge the Bat. After a bumpy mid-2000s, Sonic Mania (2017) revived the pixel-art glory, and Sonic Frontiers (2022) reinvented the blue blur as an open-world hero.
On the big screen, the live-action trilogy directed by Jeff Fowler has grossed well over 1 billion dollars since , with chewing the scenery as Dr. Robotnik, voicing Sonic, and an ever-growing Hollywood roster joining the party. More than games sold, years of comics, episodes of the Sonic X anime and a fandom that refuses to quit — Sonic isn't slowing down any time soon.