
Metal Sonic in Sonic 3 & Knuckles
About the Game
Metal Sonic in Sonic 3 & Knuckles is a fan-made ROM hack of the original Sonic 3 & Knuckles for the Sega Genesis. This modification replaces Sonic with Metal Sonic, the robotic rival created by Dr. Eggman. The hack focuses on character replacement rather than creating a new story, which means you experience the familiar zones, bosses, and progression from Sonic 3 & Knuckles while controlling Metal Sonic throughout the adventure.
Many Sonic ROM hack fans enjoy this project because it offers a chance to play one of the franchise's most recognizable villains in a complete Sonic 3 & Knuckles playthrough.
โ๏ธ Highlights of the Hack
- Play as Metal Sonic instead of Sonic.
- Travel through the complete Sonic 3 & Knuckles campaign.
- Explore classic zones such as Angel Island, Hydrocity, IceCap, and Lava Reef.
- Use the original Sonic 3 & Knuckles level layouts and boss battles.
- See custom character sprites based on Metal Sonic.
- Experience the original game mechanics with a different playable character.
๐ค Who Is Metal Sonic?
Metal Sonic first appeared in the Sega Genesis game Sonic the Hedgehog CD. Dr. Eggman built him as a robotic counterpart to Sonic. Over the years, Metal Sonic became one of the most recurring rivals in the Sonic series.
This ROM hack places Metal Sonic into the role normally occupied by Sonic. The story itself remains largely unchanged from the original Sonic 3 & Knuckles adventure.
๐ด Classic Sonic 3 & Knuckles Adventure
You begin on Angel Island and travel across a variety of environments while collecting Rings, defeating Badniks, and battling Dr. Eggman's machines.
The original game remains one of the most celebrated entries in the Sonic franchise because of its large interconnected world, memorable music, and extensive selection of stages.
Areas you will visit include:
- Angel Island Zone
- Hydrocity Zone
- Marble Garden Zone
- Carnival Night Zone
- IceCap Zone
- Launch Base Zone
- Mushroom Hill Zone
- Flying Battery Zone
- Sandopolis Zone
- Lava Reef Zone
- Hidden Palace Zone
- Sky Sanctuary Zone
- Death Egg Zone
- The Doomsday Zone
๐ฎ How to Play
EmulatorJS Controls
| Action | Control |
|---|---|
| Move | Arrow Keys |
| Jump / Action | X |
| Secondary Button | Z |
| Start | Enter |
| Mode | Shift |
Mobile Controls
- Use the virtual D-Pad to move.
- Tap the action button to jump.
- Use the on-screen Start button to pause the game.
๐ Useful Gameplay Tips
- Keep your Rings whenever possible since a single hit without Rings costs a life.
- Look for hidden pathways in each zone.
- Use slopes and loops to build speed.
- Explore upper routes for extra power-ups and bonus opportunities.
- Watch boss patterns before attacking aggressively.







































