Well one of my favorite sonic games of my blue dude. Well this one the first game will see shadow and rouge. Also play as Hero or Dark that pretty cool. It also consider the best 3d sonic game to date, many sonic fans say that. I also agree probably there best work from Sonic Team IN 3d sonic game. I used to play this game so much back in the day.The GoodNice Graphics and Different three GameplayNice CutscenesIt the best 3D sonic game to dateThe best story in Story in Sonic GameSonic and Shadow levels are lots of fun 2 player mode is lots of fun Awesome Music that like to Listen Get 180 emblems to collect that lots of replay valueIt Challenging Get All A's You can raise you chaos to do Race and Karate Battle.Many people of sonic fans love the Chaos-A-Life System.Great Level Design Fun Boss Battle All the Stages have 5 missions to do Sad and Nice Ending You can play parts again in cutscenes when beat the gameSome people will like Tails and Eggman levels Dark Team and Sonic Team both have different levels,also when both unlock True Story You can find upgrade for you character in a stageAction Levels for Sonic and Shadow, Shooting Levels for Tails and Eggman, knuckles and rouge treasure hunter The BadIt Short Gameknuckles and rouge levels probably some will **** and Tails and Eggman levels too The Camara and Controls are little annoying and because of that you will fall many times in the game Some Classic Sonic Games are Better than Sonic Adventure 2 Battle My Score 8.8 out 10 well this game love so much, it the most play game on the Gamecube for me. It there only one 3d sonic game have to choose get this it awesome game.Happy Joy for Me