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If you haven't already unlocked him, you may now play as Big.
Sonic Adventure

If you haven't already unlocked him, you may now play as Big.

Learn how to unlock and play as Big the Cat in Sonic Adventure! This guide covers the steps to access Big's unique gameplay and stages.

By ···10 min read·Multi-source verified
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Learn how to unlock and play as Big the Cat in Sonic Adventure! This guide covers the steps to access Big's unique gameplay and stages.

Alright, so you're looking to unlock Big the Cat and dive into his unique stages in Sonic Adventure? It's a bit of a journey, but totally doable! Let's get you set up so you can start playing as him.

First things first, you'll need to head into the temple to kick off stage nine, which is called Lost World. As you make your way through the center of these ancient ruins, you'll notice a familiar light appear. Follow it, and Sonic will be led to a wall featuring a big painting of a creature that looks a lot like Chaos. After that, Sonic gets zapped back in time to when the Emerald Shrine was in its prime. Keep running forward, and you'll see some sad, dead Chao on the ground. An Echidna girl will be there, upset about the Chao's fate. She'll mention needing to do something about it, but before you can see what that is, Sonic's whisked back to the present. Now, you'll spot Eggman hanging around the Mystic Ruins, and Sonic will be wondering what he's up to.

Your next objective is to head as far north as you can. You're looking for the docking station of the Egg Carrier. Once you find it, go inside and then make your way around the ledge to a door. This door has six buttons surrounding it, arranged in a specific pattern:

_ _

/ \ / \

| 1 | | 6 |

\_/ \_/

_ _

/ \ / \

| 2 | | 5 |

\_/ \_/

_ _

/ \

| 3 |

\_/

_

/ \

| 4 |

\_/

To open this door, you'll need to press the buttons in this exact sequence: 3, 1, 5, 3, 2, 1, 3, 4. Now, there might be a shorter way to do this, but this sequence is a sure-fire way to get through, so stick with it!

After you've successfully opened the door, head on through. This will lead you to the tenth and final stage of the game, Final Egg. Pretty fitting name, right?

Once you wrap up Final Egg, Sonic will confront Eggman inside a massive machine called the Egg Viper. Eggman will try to make a quick getaway, but Sonic manages to grab onto a nearby missile and gives chase. With no other options, Eggman is forced to fight Sonic.

Boss Battle: Egg Viper

  • Hits to Defeat: 7
  • Difficulty: Hard

This battle can be pretty intense, so I've broken it down into a few stages to make it easier to follow. Good luck!

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