You need 30 emblems in order for a Brown Egg to to be able to be for sale in the Black Market. However, keep in mind that no matter how many emblems you have, one or two egg colors may never appear in the Black Market. Depending on your Chao Garden saved file, the rarity of what eggs appear in you Black Market may differ, and certain colors may never appear at all. If a color you are looking for has never appeared in the Black Market for you, and you know that you have at least the required amount of emblems, you can create a new game with a new Chao Garden saved file.
100
When you get all 130 emblems you can play as metal sonic on trial.
Emblems are awards you get for completing a level,defeating a boss, choa race,ect. There are 180 in the game and are the main goal for the game
in sonic adventure dx you can only unlock metal sonic by collecting 130 sonic emblems.
Rouge can be played as in... Sonic Adventure 2 Sonic Adventure 2 Battle Sonic Battle sonic riders That is all I can think of.
You need to have at least iver 25 emblems to get a green egg in sonic adventure 2 battle
Get a lot of emblems
Collect emblems
170 or 180
Collect emblems
100.
Collect a lot of emblems
100
20
50 or 40
100
go buy the light blue egg RE:: After 105 emblems.