Sonic Adventure DX
# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Level select in Sonic Chaos
When "Press Start" appears at the Sonic Chaos title screen, press Up(4), Right, Left, Right, Left, Start.
Level select in Sonic Labyrinth
When "Press Start Button" appears at the Sonic Labyrinth title screen, press Up(2), Right(3), Down(6), Left(9).
Level select in Sonic Spinball
Enter the "Sound Test" option for Sonic Spinball. Then, play the following songs in order: 0, 2, 1, 5, 6, 6.
Faster background music in Sonic Spinball
Enter the "Sound Test" option for Sonic Spinball. Then, play the following songs in order: 0, 4, 2, 5, 5, 7.
Disable gravity in Sonic Spinball
Enter the "Sound Test" option for Sonic Spinball. Then, play the following songs in order: 0, 9, 0, 1, 6, 8.
Zoomed in view in Sonic Spinball
Enter the "Sound Test" option for Sonic Spinball. Then, play the following songs in order: 0, 2, 1, 1, 6, 6.
Level select in Sonic The Hedgehog 2
At the Sonic The Hedgehog 2 title screen, Tails will blink his eyes (first once, then two times quickly). While holding Down/Left + A + B, tap Start just when his eye shuts on the second blink of the double-blink.
Game Gear games
Each time you complete ten missions or collect Sonic Emblems, you will unlock a new Sonic mini-game. After unlocking the first mini-game, Sonic The Hedgehog, the "Mini Game Collection" option will appear as a play mode at the main menu.
Two player Game Gear mode
Press Start on controller two to display a second Game Gear screen for that player. If the original Game Gear game supported the multi-player link, the current game will switch to multi-player mode. If the game did not support the multi-player link, game play on each screen will be unrelated.
Toggle Game Gear game screen
To view the Game Gear games in a smaller, not pixelated view, press L + R. Pressing L + R again will return the view back to normal.
In-game reset
While playing a game, hold Start + A + B + X for a few seconds.
Play as Super Sonic
Complete the game using all six starting characters to unlock Super Sonic. Sonic will transform into Super Sonic after some time into the next game.
Play as Metal Sonic
Collect all 130 Emblems to unlock Metal Sonic in trail mode.
Play as Tails
Controller two may be used for Tails after he is obtained during the game in story mode. Note: Shields, invincibility and extra life boxes have no effect on Tails if collected. Also, if Tails goes too far away from Sonic, he will appear next to Sonic.
Mission mode
Successfully complete the game in adventure mode with all characters to unlock the "Mission Mode" option at the main menu.
Easy rings with Sonic
When you are at Casinopolis, go to the slot machines and press Jump twice. This will make rings appear from the slot machines.
Easy coins with E-102 in Adventure Field
Go to Station Square and in the hotel, go up the stairs to the second floor. Stand at the very top step. Shoot your laser at the second button on the floor. Keep shooting to get coins.
Easy coins with Tails
Find a patch of dark green grass. Move over and stand on it, then twirl your tail around. A group of coins will appear out of nowhere.
Easy rings for Tails
As Tails, fly up and ring the bell which appears around the halfway point of Speed Highway. About 40 rings will pour out of the bell.
Easy rings for Knuckles
Go into to the entrance for Red Mountain, but do not go in all the way inside. Dig at the entrance and many rings will almost always appear.
Extra lives for Knuckles
With Knuckles in Station Square, dig repeatedly on any patch of grass (the best being the triangle in front of the hotel) until you find an electric shield. With the shield, go upstairs in the hotel and stand on the button that creates rings for Sonic to get his power-up. The rings will continue to replenish after being drawn into the electric shield. The rings will keep appearing until you have 999. Note: Getting the shield may take some time.
Get Crystal Ring
As Sonic, after you have the Light Speed Shoes, stand in front of the door on the left side where the Crystal Ring is located. Charge up your Light Speed Dash and it should hit the button on the other side of the door. Then, go in and get the Crystal Ring.
Train Station Sonic Emblem
There is a Sonic Emblem in the Station Square Train Station that you can get with Tails. But there is also a way to get it with other characters (except perhaps Big). As you walk in, the Sonic Emblem is right above you. Walk to the train but do not go in. Instead, head right or left. There should be a small ledge, or railing there. Use the ledge to walk to a loft type object. That is where the emblem is located. Also, play as Knuckles and go to the other side of Station Square. Go to the hamburger place where the women wanted to make out with the man. There are four trees on each side. Go the right and dig in the middle of the tree to find an Emblem.
Silver Chao egg
Go to the Mystic Ruins. Go to the water fall located in the middle of the Adventure Field. Push the stone that is jutting out of the wall to the right of the water fall. A silver egg will fall from behind the waterfall and float to shore. When it hatches, a silver Chao will be born.
Golden Chao egg
Go to the Station Square area. Then, go to the area when you fought Chaos for the first time. Look to the side of the City Hall entrance to find egg shaped rock. Take the rock to the building to the left from City Hall. Walk to the window to see a golden Chao egg. However, if you try to take it the front door will lock. Replace the egg with the rock and the door will unlock, allowing you to leave with the egg. When the egg hatches you will have a golden Chao.
Black and blue Chao egg
Go to the Egg Carrier. Then, go the jail area where Amy was kept. In the cell next to where she was held is a black and blue egg. Step on the switch to open the door. Take the egg to the garden. When it hatches, it will be a dark grey and dark blue Chao.
Reuse animals
Get in a Chao Garden with some animals. Find a Chao that is not moving or eating something. Get very close to it and release the animal. The Chao will take its power. After that, the animal will just stand there. You can reuse that animal again.
Sonic Stage 1 shortcut
On Sonic's first stage, when you are propelled upward by a booster at the base of the level's highest ramp towards the end of the level, spin dash up to gain extra air. You should see a later part of the level. While falling, go towards there. If done correctly, you should make it, cutting ten seconds off your time.
Change shape in Egg Carrier
Go to the Egg Carrier crash site. Go to the cockpit where you will find the switch. Press it and go outside. The shape will look different. If you want to get to the inside from the front of the ship, use the monorail or complete the Sky Deck stage. You only need to destroy the capsule. If you want to change the ship's shape again, do it in the exactly same way that you did it in adventure mode. The ship should be its normal shape again.
Take a shower in Casinopolis
Go to the Casinopolis zone as Sonic and enter the shower area. Get into one of the stalls and push against the wall to give Sonic a shower.
Ring room in Casinopolis
Approach the little computer in front of the blue pinball machine in the Casino Metropolis. Press the "Talk" button in front of the computer. It will say "get 100 coins or less" and you will get a surprise.
Cream appearance in Casinopolis
After completing Casinopolis as Sonic or Tails for the first time and after Robotnik a.k.a. Eggman flies away, you will see Cream the Rabbit from Sonic Advance 2 fly around the Train Station. Exit the Train Station using the front door. Look up and you should see Cream flying. Fly up to her with Tails for a better view.
More rings in Emerald Coast
On Emerald Coast (level 1) go back when you are at the beginning, and then go to the right. You should find three capsules. Hit all of them and you will get 30 rings. When you are at the green hill around the middle of the level, do not go up it. Instead, go around to find three capsules. Break them all to get 1, 5, 10, 20, or 40 rings.
Sonic Super jump in Emerald Coast
As Sonic, go to the Emerald Coast level. Go to where you find the second extra life capsule. Do a light speed dash into the slope from behind. Sonic will jump very high and then fall to the ground.
Knuckles' Maximum Fighting Gloves in Mystic Ruins
When you are in the area where Big's home and the Lost Ruins are located, use Knuckles to fly to the very back end of that location. You will see a small cliff. When you get off the mine cart, it will be directly ahead in the distance. Once on the cliff, you will see a glowing light. With the Gloves, you can do an attack much like Sonic's "Ancient Light", only with Knuckles.
Extra life in Mystical Ruins
Tail's workshop is located all the way at the top of the mountains in the Mystical Ruins. Go to the very top and look around to find an extra life. Use the spin attack to zoom over and collect it.
Opening doors in Station Square
After you see the ID card for the big shed that you go to Speed Highway 6, go all the way back to where Knuckles has his first stage (Speed Highway 1). Go left to find an egg-shaped rock Use that rock in the store in Station Square with the Gold Chao Egg in the window. Take the gold one off the platform and put the rock on that same platform and the doors will unlock and open.
Defeating the whale
When on the whale stage(s), run over a speed ramp as soon as it appears. Then, do not press anything on the controller; the CPU will do the rest.
Defeating Chaos 0
Get The Ancient Light. Do the Light Speed Attack on Chaos 0 and he will be defeated with one hit.
Defeating Chaos 6
Wait until Eggman drops his freeze bombs. Then, use the homing signal to turn his bombs into eggs and throw them into Chaos' mouth. He should freeze. When he does, attack him. Repeat this as many times as needed.
Defeating Perfect Chaos
When starting, get as many rings as possible. Then, go over one of the speed tracks to gain speed. Once you are glowing blue, speed straight for Perfect Chaos and you should hit him. Repeat this as many times as possible.
Hurt Perfect Chaos at less than maximum speed
You can hurt Perfect Chaos without going top speed, although you have to be fast. Go onto the road and speed up. Stop moving during that until you are not in a Blue Shock ball, then quickly move into Chaos. If done correctly, you will hurt him without going at maximum speed.
Perfect Chaos face smash
As Super Sonic, go to the fight with Perfect Chaos. Instead of hitting Chaos head on, go to either side of him. Try going into Chaos through his arm. If done correctly, Super Sonic will fly up and smash Chaos on his chin. Note: This does not do any more damage than the usual attacks.
Emblem locations
Egg Carrier
Power-up locations
Sonic
Number of missions for each character
There are a total of 60 missions in the game, as follows: