First of all, the graphics rule.  The FMAs and opening title have perfectly smooth graphics.  And for those of you that thought Stardust Speedway in Sonic CD was fast, wait until you try Speed Highway with Sonic.  I was able to obtain the A Emblem with a time of 2:29.23 seconds.  There are six characters to choose from, three of which are new.  The old three are back.  That's right: Sonic (duh) Tails, and Knuckles.  The other three are Amy Rose, Big the Cat, and E-102 Gamma.  If any of you like fishing, play as Big.  And then there are the power-ups.  They focus on making the characters more powerful.  And there is a hidden character, Super Sonic.  This game could use Hyper Knuckles, but who cares?  And Chaos is a cool boss.  The new moves, characters, and permanent power-ups make this game one of the best games on Earth!  Reccommended for all that exist.