Raising your Chao's stats can be a long and tiring task. It requires you to collect a maximum of 10 Chaos Drives and/or animals within the levels of the main game. Then you go into Chao World afterwards and give them to your Chao.
Since you can only have 10 Chaos Drives or animals at a time, this becomes very repetitive. I'm sure that with your first few Chao you kept repeating levels over and over again just to raise your Chao's stats!
Fortunately, there is a glitch in the game that makes raising these stats easier and far less time consuming. Here's how to do it.
- Pick up an animal with your character, and stand about one Chao width apart from your Chao.
- Now put down the animal just in front of your Chao (instead of giving it to him). Position it so it just touches the Chao as it is placed down.
If done correctly, instead of your Chao grabbing the animal, hugging it and flinging it away, it will do the same but without grabbing the animal. It will still sparkle, but without grabbing the animal. The animal will even be flung away too! Now your Chao has gained the stats from this animal, but the animal is still able to be used again!
Chaos Drives can also be used with this method, but it is slightly trickier to position due to the way the Chaos Drives float up and down. To speed things up further, after you place the item down, you can catch it mid-air while it is being flung away from the Chao, to avoid having to run and pick it up again.
You will prefer to have your Chao stay in one place for this. So it's a good idea to pet, or pick up and put down your Chao so you can align yourself properly with it.
The Chao Transporter in Sonic Adventure 2 Battle contains a serious bug. As explained on the Chao Transporter page, you can transfer Chao and items back and forth between the GameCube and Game Boy Advance games. However, Sonic Adventure 2 Battle fails to save the game after a "Pick up", and instead only saves after a "Drop off", "Move", or "Good-bye"! The Tiny Chao Garden correctly saves in all cases. This can have serious consequences if you aren't aware of it.
If you transfer anything from your Tiny Chao Garden over to Sonic Adventure 2 Battle, and then turn off your GameCube (or your game freezes), you will have permanently lost everything that you transferred! This is because the Tiny Chao Garden will have correctly saved that it no longer has the Chao or items, but the regular Chao Garden will not have saved that it received the Chao or items. If this happens to you, there is no way to get back what you lost.
To avoid this issue, you should manually save the game right away by exiting the regular Chao Garden in Sonic Adventure 2 Battle immediately after transferring anything over. You only need to do this after a "Pick up", not after a "Drop off".
Shiny Jewel Chao
Shiny Jewel Chao are special breeds which have strange and unusual appearances. If you look at Sonic Adventure DX, they also appear differently on the GameCube and PC versions, and not at all on PS3 and Xbox 360. This inconsistent behaviour leads many people to believe that they are glitch. It is possible that they were never intended to be in the game.