Billy Hatcher Demo Tape
At the title screen, hold G + B on a keyboard to see a Billy Hatcher video preview.
Clippen Card
Use a memory card with a saved game file from Billy Hatcher.
Control Loading Screen
Use the Analog-stick to change colors and/or tap A to make a chime at the loading screen.
Dressing Room
Successfully complete both the Hunter and Ark storylines in Story mode (offline) to unlock the Dressing Room. It will disappear after each use, but will reappear again each time either the Hunter or Arkz storyline is completed once more.
Halloween Rappy Card
Use a memory card with a saved game file from Sonic Heroes.
Nano Dragon Card
Use a memory card with a saved game file from Phantasy Star Online Episode 1 And 2.
Rage Card
Use a memory card with a saved game file from Sonic Adventure 2 Battle.
Sange Card
Use a memory card with a saved game file from Sonic Adventure DX.
Sonic Knuckle Card
Use a memory card with a saved game file from Sonic Heroes.