Green Hill Zone (Sonic the Hedgehog) (8-bit)

Green Hill Zone is the first level in Sonic the Hedgehog for the Master System and Game Gear. As with all other stages in the game, Green Hill Zone consists of two standard Acts followed by a shorter, third Act which contains the Zone's boss (and no Rings).

The zone, again like its Genesis counterpart, is filled with rolling plains of green and jauntily colored flowers. Setting itself apart from its Megadrive counterpart, act 2 of Green Hill Zone starts with the player falling into a cave complex partly filled with water, that the player must navigate through

Boss
The boss of Green Hill Zone is Doctor Robotnik in a basic Eggmobile. For the most part, Robotnik will simply however across the screen above the player, completely vulnerable to attack. After taking several turns, Robotnik will eventually duck down to attack the player. Once Robotnik is defeated, he will flee, allowing the player to break open the Egg Capsule, free the trapped animals, and complete the level.