Sonic the Hedgehog 3 (ソニック·ザ·ヘッジホッグ3 Sonikku za hejjihoggu 3), referred to as Sonic 3 (ソニック3 Sonikku 3), is a series of games developed by Sonic Team and published by SEGA. It is the sequel to "Sonic the Hedgehog 2", and "Sonic and Na Cruz" released later in the same year is the story after the ending of "Sonic the Hedgehog 3". The technical team allows gamers to combine the "Sonic the Hedgehog 3" cassette and the "Sonic and Veracruz" cassette into "Sonic the Hedgehog 3 and Veracruz", and the two are sometimes considered to be the same game Two parts. This game also debuted a new role-Na Cruz. Originally "Sonic the Hedgehog 3" was meant to include the game "Sonic and Nacruz", but because the game could not be completed in time, it was divided into two parts. One advantage of this game is that it can be archived.

The game was released at SEGA Genesis in Japan on January 14, 1994. The European version of SEGA Genesis will be released later that month. The game was launched in the United States on February 2, 1994.

After experiencing the Battle of Egghead Planet, Sonic and Tars, who were tracking Dr Egghead, rushed to Angel Island. Before they could gain a foothold, the chaotic emerald they carried was caught by a red echidna named Nakruz. Robbed. It turns out that the planet of Egghead of the evil genius scientist Dr Egghead fell to Angel Island long before this. Dr Egghead deceived Nacruz and said: "There is a blue hedgehog named Sonic, who often destroys his various research results and has even coveted the chaotic emerald of Angel Island for a long time." Nakuru easily believed this lie and helped Dr Egghead stop Sonic the two. To retrieve the Chaos Emerald, Sonic and Tars embarked on a new adventure on Angel Island. Can the misunderstanding between Sonic and Nacruz be resolved? Can they smash Dr Egghead's ambition to use powerful power?