Sonic Adventure DX

Go to a stage and hold R + L. You will be directly behind the character when they do certain things in stages. Note: You may not see things that are normally seen in stages.

When playing as Sonic, fight the Egg Hornet. When it is down to its last hit, let Eggman drill into you. Do not get any rings back. Deliver the last hit and wait for the machinery to fall off the Egg Hornet. After that, jump up and hit Eggman. Sonic will say "No", then the game will total up your points. However, Sonic will faint as he says "Hey, I'll play with you some other time" and die. Note: You will have to fight the Egg Hornet again if this happens. This also works during trail mode.

When the Tornado lands on the Egg Carrier, the Chaos Emerald changes from red to white, then back to red.

Go to the Egg Carrier as Knuckles. Run as fast as you can and glide towards a door. Keep gliding towards it when it opens. As the screen fades to black before you enter the room, you should see that Knuckles actually clings onto the black opening as if it was an obstacle.

After you land on the Egg Carrier in Sonic's or Tails' story, press Start while the Egg Carrier is transforming. The Egg Carrier should disappear. When you continue, it will appear again.

As Knuckles on the Egg Carrier, instead of entering the scene on the deck area go around the building area and into the door to the pool room. Stand at the front of the pool and fall down. Note: Make sure not to jump down into the pool. This may require a few attempts. You will now be in the small area to the Sky Deck level for Knuckles. Enter and complete the level. Soon you will be in the past (the place with Tikal and the Chaos) and no intermission sequence will trigger. Remove your memory card before doing this glitch. After performing this glitch your saved data will permanently be saved onto that area and you will never be able to leave this area. This occurs when the memory card is left in the system when this glitch is performed.

Go inside Egg Carrier through air. As Tails, go to the small pool building area on the Egg Carrier. Fly on top of it then go down to the left hatch (wing). Fly into it until you can enter the interior. Note: If you try the right hatch this will not work. If done correctly, you will now be inside the Egg Carrier where there is water and sky. There is a endless pit or hole somewhere here. If you fall you must restart the game. It is best to just stay on the interior of the wing when trying this glitch.

Get on the side where you come from Station Square. Gain speed and break through the invisible barrier that blocks you. You will now be on the front of the Egg Carrier. Walk to the edge and you will get underwater. Walk back to the base of the ship. You can see the black hole that is at the bottom of every stage. Keep going until you pass that point to get under the Egg Carrier. If you now fall into the black hole, you will not die. To exit, you must quit the level.

With Sonic, enter the swimming pool room on the Egg Carrier. Do not touch the Analog-stick. Do a Spin Dash. Sonic will go through the corner of one of the stairs in the pool and die.

Get the man at the burger stand (the statue) and put him close to the right at the coastal beach gate, but not too close. Try to glide on top of him. This may require a few attempts. If you did it correctly, Knuckles will be in Emerald Beach. Note: When you enter the jungle part, it will not be like with Tails where the level ends. You will be in a place behind the jungle entrance rock. You will die trying to get back to land.