: Access to the "Extra Zone" and the final "Nonaggression" boss fight.

... not required to beat the game with an "any%" completion. In Sonic Advance 3, there are 10 chao located in each of the 7 zones,

If you just want to play 100% immediately:

If you tell me your , I can give exact conversion steps.

This is the meat of the completionist experience. The (accessible from the main map) is where the true 100% status is verified. In a standard playthrough, this area is empty. In a 100% file, it is a bustling garden.

: Unlocks the Sound Test and the Boss Option in Time Attack mode.