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    Genesis Games
    Sonic & Knuckles + Sonic the Hedgehog 3 (World) - Play Now
    Dragon Ball Z - Supersonic Warriors (K)(ProjectG)

    Dragon Ball Z - Supersonic Warriors (K)(ProjectG)

    Mario 64 Sonic Edition Plus v2.2.2

    Mario 64 Sonic Edition Plus v2.2.2

    Tekken 3

    Tekken 3

    Sonic Classic Heroes

    Sonic Classic Heroes

    Castlevania - Symphony Of The Night

    Castlevania - Symphony Of The Night

    Sonic 3 Complete

    Sonic 3 Complete

    Sonic & Knuckles + Sonic the Hedgehog 3 (World)(2.4 MB)

    Mother 3 (Eng. Translation)

    Mother 3 (Eng. Translation)

    Contra (USA)

    Contra (USA)

    Bloody Roar 2: Bringer of New Age

    Bloody Roar 2: Bringer of New Age

    Super Mario All Stars NES

    Super Mario All Stars NES

    Toy Story 2 - Buzz Lightyear to the Rescue! (Europe)

    Toy Story 2 - Buzz Lightyear to the Rescue! (Europe)

    Kirby's Dream Land 3 (USA)

    Kirby's Dream Land 3 (USA)

    Silent Hill

    Silent Hill

    Smash Remix 1.3.0

    Smash Remix 1.3.0

    Chrono Trigger (USA)

    Chrono Trigger (USA)

    Kirby 64 - The Crystal Shards (USA)

    Kirby 64 - The Crystal Shards (USA)

    Pokemon Unbound v2.1.0

    Pokemon Unbound v2.1.0

    Smash Remix 1.5.0

    Smash Remix 1.5.0

    EarthBound (USA)

    EarthBound (USA)

    Sonic CD (USA)

    Sonic CD (USA)

    Pokemon Radical Red v4.0

    Pokemon Radical Red v4.0

    Battle City (Japan)

    Battle City (Japan)

    Sonic & Knuckles + Sonic the Hedgehog 3 (World)

    Sonic & Knuckles + Sonic the Hedgehog 3 (World)

    Parappa the Rapper

    Parappa the Rapper

    Kirby Super Star (USA)

    Kirby Super Star (USA)

    Pokemon Fire Red Extended (v3.2)

    Pokemon Fire Red Extended (v3.2)

    Super Sonic & Hyper Sonic in Sonic 1

    Super Sonic & Hyper Sonic in Sonic 1

    Sonic Classic Heroes (2022 Update!) (v0.15.03d8)

    Sonic Classic Heroes (2022 Update!) (v0.15.03d8)

    Wario Land 4 (E)(Mode7)

    Wario Land 4 (E)(Mode7)

    Kirby - Squeak Squad (USA)

    Kirby - Squeak Squad (USA)

    Cooler Sonic in Sonic 3 & Knuckles

    Cooler Sonic in Sonic 3 & Knuckles

    Super Bomberman 4 (English - Translated)

    Super Bomberman 4 (English - Translated)

    Metroid - Fusion (U)(GBANow)

    Metroid - Fusion (U)(GBANow)

    Crash Bandicoot 2 - Cortex Strikes Back

    Crash Bandicoot 2 - Cortex Strikes Back

    Penguin Brothers (Japan)

    Penguin Brothers (Japan)

    Yu-Gi-Oh! - Forbidden Memories

    Yu-Gi-Oh! - Forbidden Memories

    Top Gear (USA)

    Top Gear (USA)

    Super Metroid (Japan, USA) (En,Ja)

    Super Metroid (Japan, USA) (En,Ja)

    Sonic & Knuckles + Sonic the Hedgehog 3 (World)

    Experience the iconic Sega Genesis platformer Sonic & Knuckles, the only game with revolutionary lock-on technology enabling Knuckles gameplay in Sonic 2 and merging with Sonic the Hedgehog 3 for an expansive, seamless adventure. This genre-defining sequel combines retro gaming innovation, enhanced mechanics, and cooperative exploration, solidifying its legacy as a must-play classic in the legendary Sonic series.

    What is Sonic & Knuckles + Sonic the Hedgehog 3 (World)?

    Sonic & Knuckles + Sonic the Hedgehog 3 (World) is a Genesis-type platformer that merges two iconic titles into one expansive adventure. Originally released as a standalone sequel to Sonic the Hedgehog 3, this game introduced Sega’s lock-on technology, allowing players to combine cartridges of Sonic the Hedgehog 3 and Sonic & Knuckles for seamless gameplay. It features Sonic and Knuckles teaming up to thwart Dr. Robotnik’s schemes across redesigned zones, new abilities like Knuckles’ gliding and wall-climbing, and an epic conclusion to the Angel Island saga.

    Game Features

    • Lock-on Technology: Seamlessly merge Sonic the Hedgehog 3 and Sonic & Knuckles cartridges for a unified experience.
    • Expanded Zones: Reimagined levels from Sonic 3 with added challenges and Knuckles-exclusive areas.
    • New Abilities: Play as Knuckles to access unique skills like gliding, digging, and climbing walls.
    • Boss Battles: Face off against Dr. Robotnik’s mechanical creations in multi-phase showdowns.
    • Co-op Mechanics: Alternate between Sonic and Knuckles in drop-in/drop-out multiplayer modes.

    How to Play Sonic & Knuckles + Sonic the Hedgehog 3 (World)?

    1. Connect Cartridges: Use the lock-on technology by attaching the Sonic & Knuckles cartridge to a Sonic 3 cartridge.
    2. Select Mode: Choose between Sonic 3, Sonic & Knuckles, or the combined Sonic 3 & Knuckles mode.
    3. Character Controls:
      • Movement: Arrow keys or WASD to navigate.
      • Jump/Action: Press Space or Z to jump; X for special abilities (e.g., Knuckles’ punch).
      • A/B Buttons: Use Z (A) for basic actions and X (B) for secondary functions.
    4. Explore Levels: Traverse zones like Ice Cap and Launch Base, solving puzzles and defeating enemies.
    5. Boss Fights: Learn attack patterns and exploit weaknesses to progress.

    Frequently Asked Questions

    What is lock-on technology?
    Lock-on technology allows physical cartridge connection between Sonic & Knuckles and Sonic 3 to merge gameplay, enabling features like playing as Knuckles in Sonic 2.

    How do I access Sonic the Hedgehog 2 content?
    Insert the Sonic & Knuckles cartridge into the Genesis console first, then attach the Sonic 2 cartridge to the back of it. This unlocks Knuckles as a playable character in Sonic 2.

    Can I play as Knuckles in Sonic 3 & Knuckles?
    Yes! In the combined mode, select Knuckles at the title screen to use his unique abilities throughout the game.