Extra Chao
To do this cheat, you must have Sonic Advance 1 or 2 and a Gamecube/GBA link cable.Go to the Chao Garden on Sonic DX, and step on the transporter. Then, turn on the Tiny Chao Garden on Gameboy Advance. Transport the chao you have in GBA to the Sonic DX garden. Then on GBA, go to the chao mini-store by pressing L. You will see a free egg. Buy it, hatch it, then transport it to Sonic DX. Keep on doing this until you have enough Chao.
Glitch: Tails in Emerald Coast
As Tails, go to the pool outside the hotel. Go to the right 'till your directly below the balcony. Fly and do NOT move the anolog stick. You'll go through the balcony. Now slowly run outside of the hotel to a small platform. Note:This next part can be easier with the jet anklet. Now,try to fly over to the beach far enough so you won't die, and go to the blue gate. And you're in Emerald Coast. Note:You can only play the first part,then you'll back to the pool.
Sonic Labyrinth: Level select
Press Up(2), Right(3), Down(6), Left(9) when "Press Start Button" appears at the Sonic Labyrinth title screen.
Mission mode
Successfully complete the game in adventure mode with all characters to unlock the "Mission Mode" option at the main menu.
Play as Tails
Controller two may be used for Tails after he is obtained during game play in story mode. Note: Shields, invincibility and extra life boxes have no effect on Tails if collected. Note: If Tails goes too far away from Sonic, he will appear next to Sonic.
Sonic Spinball: Zoomed in view
Enter the "Sound Test" option for Sonic Spinball. Then, play the following songs in order: 0, 2, 1, 1, 6, 6.
Play As Metal Sonic
Collect all 130 Emblems to unlock Metal Sonic in trail mode.
Sonic Chaos: Level select
Press Up(4), Right, Left, Right, Left, Start when "Press Start" appears at the Sonic Chaos title screen.
Sonic Spinball: Faster background music
Enter the "Sound Test" option for Sonic Spinball. Then, play the following songs in order: 0, 4, 2, 5, 5, 7.
Sonic Spinball: Level select
Enter the "Sound Test" option for Sonic Spinball. Then, play the following songs in order: 0, 2, 1, 5, 6, 6.
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