Either play the games lots of times or play them for many hours. Also having other sonic games on your memory card will unlock some games.
Sonic Underground is an animated TV series. And no, you cannot unlock episodes, or characters other than Sonic, from Sonic Underground in Super Smash Bros Brawl.
To unlock the Last story on Sonic Heroes, you have to play all other stories:team sonic, dark, rose and chaotix all the way through (100%)
Hotweels games are good but to unlock them at first its simple but then it gets harder. You can also unlock other cool stuff.
you unlock mini games but defeating other dances example: Elvira
Other than the extra abilities in several games like Sonic Unleashed, or Sonic Colors, Sonic doesn't 'gain' powers. He always had his famous speed. Along with the ability to use the chaos emeralds to turn into Super Sonic.
sonic mega collection plus (sold sepretly or in sonic PC collection which has 3 other games which are sonic riders sonic heroes & sonic dx director's cut
knuckles in sonic two, blue sphere, sonic 3 and knuckles, flickey and ristar.
No, theirs no other way to do that but to unlock S3&K
no
Knuckles is not unlockable is story mode, but he is playable in competition mode. Note that Knuckles cannot glide in competition. If you lock on Sonic 3 to Sonic & Knuckles you can play through Sonic 3 story mode as Knuckles. He can glide in Sonic 3 & Knuckles. He is also playable in Sonic 2, if you lock on Sonic 2 to Sonic & Knuckles. It would be Knuckles in Sonic 2. He can also glide in it.
No. Sonic Jam is itself a compilation, with a small overworld. It has yet to be released anywhere else but the Sega Saturn. The games in the compilation, however, have been released on many other compilations.
Sonic Underground is an animated TV series. And no, you cannot unlock episodes, or characters other than Sonic, from Sonic Underground in Super Smash Bros Brawl.
To unlock the Last story on Sonic Heroes, you have to play all other stories:team sonic, dark, rose and chaotix all the way through (100%)
Unlock all other characters by beating them in races with the Sonic Tokens. Afterwards, the game is 100% complete.
Yes I'm not saying hype but you can unlock other chracters besides sonic and tails
Shadow is not playable, and no other Sonic characters besides Sonic himself are.
No the Sonic Next Generation game does not have Xbox Live. But it has downloadble content in it, for you to get new stages and etc. Now as if for Sonic Unleashed it doesn't have any Xbox Live too, it just has downloadble content and that's it. And for Sonic's Ultimate Genesis Collection (EU name Sega Mega Drive Ultimate Collection) it has the same thing as the others. As if for Sonic and Sega All Star Racing is the same thing as the other three sonic games. thanks for asking!