Sonic the Hedgehog (16-bit)

Sonic the Hedgehog (ソニック・ザ・ヘッジホッグ) is a 16-bit platformer video game for the Mega Drive, developed by Sonic Team and published by Sega. It first released collectively in North America and Europe as a pack-in title for the Mega Drive  on June 23, 1991. One month later it released in Japan on July 26. It is the first installment in the Sonic the Hedgehog series and would continue with a direct sequel Sonic the Hedgehog 2.