Sonic & Knuckles + Sonic the Hedgehog 3 (World)

Sonic & Knuckles + Sonic the Hedgehog 3 (World) is an iconic game for the Sega Genesis, serving as the sequel to Sonic the Hedgehog 3. It features unique lock-on technology that allows players to combine Sonic & Knuckles with Sonic the Hedgehog 3 into one large adventure. Set in diverse zones like Angel Island, players control Sonic or Knuckles to thwart Dr. Robotnik's evil plans. Known for its innovative mechanics, rich level design, and classic characters, this game is a key entry in the Sonic series, beloved by fans and representing the peak of 1990s platform gaming.

The core gameplay involves fast-paced action-platforming where players control Sonic or Knuckles to run, jump, and attack enemies across multiple levels. Level designs include varied environments such as Angel Island, Hydrocity Zone, and Marble Garden Zone, each with unique obstacles and puzzles. Players collect rings for extra lives and use special abilities like Sonic's speed and Knuckles' gliding and climbing to explore hidden areas. The game supports lock-on technology, enabling combination with Sonic the Hedgehog 3 to unlock new levels and character abilities, offering extended playtime and replay value.