| You can't talk about the Sonic Adventure series without thinking of the artificial life form, Chao. In the Nintendo GameCube version, everything, such as activities, reactions, intelligence, is further advanced. You can enjoy raising Chao more than ever before. You can go shopping with the rings that you collected on the action stage. There is a gauge to show the Chao's development. The basic system for raising Chaos has been upgraded. You can also take advantage of the Gameboy Advance link. You can raise your Chao outside of the TV screen. You can transfer your Chao to Sonic Advance, the exclusive software for Gameboy Advance, which will be released at the same time. You can enjoy your Chao anywhere. |
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| Chao live in the Chao garden. | Chao will grow up when players gives them things such as animals that they bring back from each stage. |
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| In the Chao race, your favorite Chao will compete against other Chao. | If your Chao wins, you can get various prizes. |
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| New comical battle game, Chao Karate. Find out what your Chao is made of! | There are strong rivals that await you . How far can you take your Chao? |
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| In the Health Center, check out how your Chao is doing. | You can raise your Chao in the Game Boy Advance. |
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