Is there a black market in sonic adventure 1 and where

No. There is no Black Market in Sonic Adventure 1. It didn't exist yet. However, it does show up in Sonic Adventure DX: Director's Cut. 1. Go into the hotel of Station Square and go to the Chao Garden (not Mystic Ruins or the Egg Carrier). 2. Look to the left of the entrance and you shall see another door. Walk near it and it will swing open. 3. You're now in the Chao Black Market! You can buy stuff for your Chao with the rings you have found in the Adventure Fields (not Action Stages). The Black Market is a leftover feature from Sonic Adventure 2: Battle, so that is why it is in the GCN/PC version (actually, there wasn't anything "Director's Cut" about SADX, SA2:B was more of a Director's Cut since it utilized actual lost features). There WAS a Black Market in the Dreamcast version, but only via connecting with the official website. It's entirely different from the SA2 Black Market and gave you special jewel-coloured Chao if you had enough Emblems. Also, it wasn't available in North America, no idea about Europe.