Sonic the Hedgehog (Japanese: ソニック・ザ・ヘッジホッグ Hepburn: Sonikku za Hejjihoggu) is a platform video game developed by Sonic Team and published by Sega for the Sega Genesis console. The game was first released in North America, Europe and Australia in June 1991, and in Japan the following month. The game features an anthropomorphic hedgehog named Sonic in a quest to defeat Dr. Robotnik, a scientist who has imprisoned animals in robots and stolen the magical Chaos Emeralds. Sonic the Hedgehog's gameplay involves collecting rings as a form of health and a simple control scheme, with jumping and attacking controlled by a single button.