Sonic is mistaken for an evil Hedgehog named Shadow who has been spreading danger across the world. The military and all police units are after Sonic and you need to escape Sonic from them and avoid them in many of the levels.
There are many fun modes you can play in: Story Mode, Kart Mode and Chao Raising Mode. Story mode is the main game. You can choose to play as the Hero's (Sonic, Tails, and Knuckles) or the Dark villains (Shadow, Rouge and Dr. Robotnik).
Kart mode is just like Mario Kart games for the Super Nintendo and Nintendo 64. You unlock Kart racing after you complete the first 9 stages. You can play in one player or two player and race as Sonic, Knuckles, Tails, Shadow, Rouge, or Dr. Robonik in 3 different courses.
Raising a Chao can be frustrating sometimes, but it is also fun. You teach your Chao to do new things while being nice to it, but trying not to spoil it. This mode gets old after a while though.
The levels in this game are amazing. Each level includes different missions that get more challenging as you get deeper in to the game. The graphics are very realistic and when the spins and jumps Sonic does look very smooth. The gameplay is a lot better than Sonic Adventure.
Sonic also has new abilities to grind on rails, and swing form vines and bars. And there is also a newer helper Chao named OmoChao who gives you hints in each level.
Sonic Adventure 2 is loaded with secrets to unlock. If you get All 'A' rankings in each of the levels many great secrets are unlocked. Also, getting all 180 emblems is very rewarding. There are many other secrets to unlock as well.
There are only two minor flaws in this game. The camera angles don't always show the direction you want to see and you can't play just as one character like you could in SA1.
Overall this is my favorite Sonic game ever and the best Dreamcast game that I have ever played. Sadly, it is the last Sonic game to be on a Sega console.
There are many fun modes you can play in: Story Mode, Kart Mode and Chao Raising Mode. Story mode is the main game. You can choose to play as the Hero's (Sonic, Tails, and Knuckles) or the Dark villains (Shadow, Rogue and Dr. Robotnik).
Kart mode is just like Mario Kart games for the Super Nintendo and Nintendo 64. You unlock Kart racing after you complete the first 9 stages. You can play in one player or two player and race as Sonic, Knuckles, Tails, Amy, Shadow or Rogue in 3 different courses.
