First released in North America, Europe, and Australia on June 23, 1991, the game is the first installment in the Sonic the Hedgehog series, chronicling the adventures of the titular character in his quest to defeat the series' antagonist Dr. Robotnik.

Sonic the Hedgehog and Knuckles the Echidna, once enemies, now allies. Sonic the Hedgehog is a platform video game developed by Sonic Team and published by Sega for the Sega Mega Drive/Genesis. Originally created to counter Mario Bros., the famous mascot of Nintendo, Sonic quickly became the favorite character from Sega and is … Sonic the Hedgehog and Knuckles the Echidna, once enemies, now allies. Teamed together to stop that evil scientist, Dr. Ivo Robotnik, from taking control of the world with his crazed … Teamed together to stop that evil scientist, Dr. Ivo Robotnik, from taking control of the world with his … First released in North America, Europe, and Australia on June 23, 1991, the game is the first installment in the Sonic the Hedgehog series, chronicling the adventures of the titular character in his quest to defeat the series' antagonist Dr. Robotnik. Rediscover Sonic the Hedgehog with this online version, exact copy of the original Sega game released in 1991 on Genesis console.