Unlockable - Unlockable Items | |
| Ball for Hero Garden | Win the first 2 levels of the Hero race |
| Ball for Dark Garden | Win the first 2 levels of the Dark race |
| Note in a bottle | Win all 5 levels of the Dimond race |
| Pencil Case | Win all 5 levels of the Onyx race |
| Pogo Stick | Win all 5 levels of the Garnet race |
| Picture Book | Win all 5 levels of the Perridot race |
| Sonic Cudly Toy | Win all 5 levels of the Aquamarine race |
| Broom | Win all 5 levels of the Topaz race |
| Car | Win all 3 levels of the Mushroom Forest race |
| Watering Can | Win all 3 levels of the Stump Valley race |
| Shovel | Win all 3 levels of the Crab Pool race |
| Rattle | Win all 3 levels of the Block Cannyon Race |
| Ball for Normal Garden | Win the first 4 levels of the Challenge race |
| Radio for Dark Garden | Win all 4 Dark Races |
| Rocking Horse for Hero Garden | Win all 4 Hero Races |
| Jack in the Box for Normal Garden | Win the first 8 challenge races |
| Chao TV | Win all 12 Challenge Races |
Unlockable - Unlockables | |
| Super Level on Chao Karate | Complete all three of the original difficulties in Chao Karate using the same Chao and that Chao (and that Chao only) will now have access to a Super level |
| New 2P Costumes | Complete every mission as a character with A ranking on every one of them (extremely difficult) and that character will obtain a new costume to use in 2P Battles. |
| More Karts | Complete every mission for each character (ranking does not matter) and you'll unlock the new kart for them. Simply highlight their picture on the select screen and press Up |
| Last Stage | In order to play the actual last and final stage of this game, then finish both Hero and Dark side story games. Once this is done, go into story mode and a ''Last Stage?'' menu selection should appear between the Hero and the Dark Side selections |
| Dark Chao Garden | Raise a Dark Chao with one of the three ''Dark'' characters. Continually feed and train your Dark Chao and soon it will evolve (creates a tear-shaped ''cocoon''). Once it evolves, the descending stairs should appear at the main Chao lobby |
| Hero Chao Garden | Raise a Hero Chao with one of the three Hero characters. Continually feed and train your Hero Chao and it should evolve (creates a tear-shaped ''cocoon''). Once it evolves, ascending stairs should appear at the main Chao lobby leading to the Hero Garden. |
| Kart Racing Game | In the Hero Side story complete the Tails driving quest and then in Dark Side story successfully finish the Rouge chase mission. You will now have a playable kart racing game to play. |
| Boss Attack Mode | Complete either the Hero or the Dark side story modes. Here you will be able to fight each boss from either the Hero or the Dark side |
| Green Hill Zone | Get all 180 Emblems and unlock the 3D version of Green Hill Zone from Sonic The Hedgehog 1. |
| Shovel Chao Toy | Win all 3 Crab Pool races |
| Watering Can Chao Toy | Win all 3 Stump Valley races |
| Toy Car Chao Toy | Win all 3 Mushroom Forest races |
| Rattle Chao Toy | Win all 3 Block Canyon races |
| Jewel races | Complete all 4 of the original races and get the emblem. The Jewel races will be unlocked. |
| Diamond & Onyx Chao Races | Win at least one race from Aquamarine, Garnet, Peridot, and Topaz Chao Races to unlock them. |
| 2P Kart Race | Simply complete both Route 101 (Hero) and Route 280 (Dark) and Kart Race in 2P Battle with become avaible. |
| Hidden Secretary Theme | When you are on the Theme Select screen, rotate the Control Stick Clockwise for a while until you hear a chime-like sound. You should be able to select the Secretary Theme. |
| Scene Select. | Beat the story. |
| Level 4 2-player games | Beat Final Rush or Final Chase in the Hero or dark side and a level 4 game should apper in 2-player mode |
Password - Clear picture | |
| Clear picture | When Pausing press and hold the Y and X buttons. |
Secret - Chaos Chao | |
| To get a Chaos Chao you must first have your chao reincarnate twice. Then in its third life while its a child give it one of every 21 kinds of animals. Only one of the same animal and dont give it drives then have the alignment to what you want it to be. For a Hero Chaos Chao make its alignment hero for Nuetral Chaos Chao make its alignment Nuetral. For a Dark Chaos Chao make its alignment dark. Then wait for you chao to evolve and a Chaos chao will come out of the Caccoon | |
Secret - Speed Up 2-Player Time Stop | |
| When playing two player, if your opponent uses "Time Stop," press and hold forward on the control stick to make the time go faster. | |
Secret - Chao Traits | |
| To raise a chao that is more skilled in either running, swimming, flying, or strength, you must feed the chao a certain type of chaos drive while a chao is still a child. For a fast running chao, feed it more green chaos drives than any other color of chaos drive. For a fast swimming chao, feed it more yellow chaos drives than any other color of chaos drive. For a fast flying chao, feed it more purple chaos drives than any other color of chaos drive. And for a stronger chao, feed it more red chaos drives than any other color of drive. But remember! Your chao must be a child! You can tell if you've done it right, if your chao starts to grow odd extentions on the back of its head. | |
Glitch - Past the Level Boundary - Chao Garden | |
| While in the normal Chao Garden with either Sonic or Shadow, walk up to the left corner where the grass becomes rock (the one with the pond and waterfall), and start homing attacking that corner repeatedly. You will eventually leave the Chao Garden, and Sonic/Shadow will be flying above the water in the falling pose with a copy of him above him. You can now him him around, and even leave the entire Chao Garden. When you leave the area, everything will turn black and purple. To return to normal, either exit, or move back against the Chao Garden. | |
Glitch - Chao duplication | |
| In order to do this you need both sonic adventure dx and sonic adventure 2 : battle,a link cable and a gameboy advance. Take a chao from either sonic game and put it in the chao transporter WITHOUT a gamepak in your gameboy. When your chao is transported it will be a copy and the real one will remain in the garden you got him from. Now load up the other sonic game with your gameboy still hooked up and go to its chao garden. Go to the transporter and you will be able to get the same chao you put in the gameboy. now you have 2 of the same chao. This trick is great if you want multiple copies of the gold and silver chao from Sonic DX. NOTE:any animal parts of your chao will return to nomal in the other gareden but hero and dark chao stay hero or dark. | |
Glitch - 2 Player speedup glitch | |
| Double Running SpeedIn a 2 player action race Sonic and Shadow can activate a glitch that will increase your running speed. To activate the glitch get between 80-89 rings, and make sure you have a speedup. when you are ready stand in front of a point marker and then press B button to activate your speedup, directly afterwards run through the gate. your character will now run at 2x speed. to deactivate the glitch exit the level or select "No" after the race is over. NOTE:this glitch will also cause a decrease in grinding and boarding speed. Double Grinding and Boarding speedIn a 2 player action race Sonic and Shadow can activate a glitch that will increase your grinding and boarding speed. To activate the glitch get between 80-89 rings, and make sure you have a speedup. when you are ready stand in front of a point marker walk through and then press B button to activate your speedup as soon as the lightspeed shoes appear. your character will now run at half speed,but will board and grind faster to deactivate the glitch exit the level or select "No" after the race is over. | |
Glitch - Invincible Amy | |
| This only works in multiplayer. The first step is to die. Then, before you are re-spawned, Hold the B-button. If you continue to hold it, you will become invincible and kill any other player you touch.This trick only works as long as you hold the B button down. If you release it, you will lose this glitch and have to die again to regain it. | |
