Yeah the DS version has a bit of a different storyline in terms of unlockable missions. Almost every modern Sonic character appears. Sonic and tails appear for obvious reasons, rouge is sent there by the government, and she wants to get some rings/gems from starlight carnival, amy follows sonic for he is the love of her life, cream wants to have fun on all the rides, Shadow and Omega come for the hell of it, (Omega also questions shadow why he does not try to stop eggman, he replies that he doesn't see a point, and omega confirms that shadow is as strong as sonic in the modern games, meaning shadow can boost and all that), Silver comes to have fun on the rides, yet he hates all the ones he has been on such as "The ride of the future", in which he commented "this is nothing like the future where I am from", Blaze comes to acompany silver, Espio Vector and charmy were hired to go and investigate/collect data from planet wisp, big is here searching for froggy (of course big looses froggy again...its called a leash big, use it), and knuckles appears, I think (I say I think because I sorta forgot) because he saw rouge coming here. It was pretty cool seeing all the characters appear, but not join up with sonic carrying out their own purposes.
