Sonic Adventure DX Director's Cut Tips

Easter Egg (Special thing within the game)
When you're playing as E-102 Gamma play the level "Hot Shelter". At the beginning or the end of the boss fight against E-105 Zeta you can see him up close. Around the bottom of him, there's a pattern of the colors "Purple and White". If you look at the white you can see that it's a Sega Dreamcast.