DID U KNOW THERES A HIDDEN 2 PLAYER?
This is really cool -
In Sonic Adventure 1 for Dreamcast if you hook up a controller to the port to the dreamcast while both tails and sonic are on screen you can play 2 player just like it was on GENESIS!!!
I just thought that was a great idea in making the game as it feels very familiar! Just goes to show you dreamcast and its games are #1. GIVE IT A TRY!