Collection

Chao Collection was first introduced in . In collections, you are required to obtain all Chao of a World to obtain a Master Chao based on that world. Currently it only includes Green Hill.
==Green Hill==
All Chao obtained from Vending Machines in Green Hill are required to obtain the Green Hill Master Chao. There are 20 Green Hill Chao needed.
==Trivia== 
*In the Green Hill Chao Collection Station, the Jewel Green Chao was accidentally called the Jewel Emerald Chao
==Gallery==
File:Chao Collection.png|The Chao Collection Station
File:Jewel Emerald Chao Mess-up.png|Jewel Emerald Chao Mess-up
File:Green Hill Master Chao UI.png|The UI for obtaining the Green Hill Master Chao