Also known as: ソニック・ザ・ヘッジホッグ3
An entry in Sonic the Hedgehog series for Sega Mega Drive game.
The game was split into two parts due to time constraints, making the second half released separately as Sonic & Knuckles.
With the Lock-On Technology used in Sonic & Knuckles, the two-parter can be played in its intended form, of Sonic 3 & Knuckles.