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

When playing two player, if your opponent uses "Time Stop," press and hold forward on the control stick to make the time go faster.

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.

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.

Double Running Speed

In 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 speed

In 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.

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.