Sonic Riders 3 does not exist, but it will for Kinect Xbox360. I'm not sure what the difference is so it might be, might not be. We'll have to find out when it comes out, won't we?
There is a possibility, but at the moment no one knows.
No.
Yes
At this point in time, a fourth Sonic Riders isn't known to be in production.
No. Sonic's brother wasn't in any Sonic game to be correct.
yes like sonic free riders
no, there are no cheats in sonic unleashed. if you have a xbox360, no, there are achievement's. other systems, i don't know. search google, that's what i did for xbox360 and i got achievement's, but no there is none for xbox 360 and there will never be any. <c
Hyper Sonic is a more advanced version of Super Sonic, that was only ever in one Sonic game: Sonic 3 & Knuckles for the Genesis, he is not in Sonic Riders or any other Sonic game. As for Super Sonic, you can only get him in Sonic Riders by completing all missions with a gold rank. *trust me it's not worth it, way too much work for the reward*
Sonic the Hedgehog 4(Arcade game for WII and PS3 and XBOX360) and Sonic Colors(WII ONLY!)
Ya,Sonic and the Black Knight.
Maybe, you would have to work for SEGA to know.
I believe so but I don't know any.