Released as a return to classic 2D gameplay, it serves as a direct sequel to Sonic & Knuckles .

: You can check for new episodes and community updates on the Sonic the Hedgehog YouTube Channel .

SEGA often uses "Episode 1" for their seasonal community content.

: You can find more about the game's development and impact on Wikipedia . Sonic Official (Livestreams & Web Series)

: Released June 23, 1991, it introduced the world to Sonic’s speed and his fight against Dr. Robotnik.

: The game is split into six principal zones, such as Green Hill Zone, with each zone containing three acts.