Sonic the Great
I grew up playing sonic adventure for the dreamcast and i have to say its a great game. Even to this date i am a huge fan of Sonic adventure and sonic adventure 2. One of the greatest features of this game is the chaos.You can raise them to be evil or good and when you do u unlock chao heaven and chao hell. Another good feature about the the sonic adventure games is Dr eggman and his evil schemes,like shadow.