In my opinion only 2D Sonic games are any good and the only ones since the Dreamcast were Sonic Advance 3 and Sonic Rush 2 games, with the more recent Sonic 4. These games are all similar and the one with the least story in is the first Rush, so if you don't like story in your games, that's the best.
Sonic adventure battle 2
Sonic 3D Blast came before Sonic Adventure.
Sonic Adventure 2 By The SuperAmr!!!!!!!!!!!!!
Sonic Adventure
I will say Sonic's 1, 2, 3 but Sonic & Knuckles is tottaly awesome or Sonic Blast Dudes!
You can click download game trial after clicking sonic adventure at the game marketplace.
Sonic adventure 1 and 2
Sonic Adventure Battle (DC/GC) and Sonic Adventure Battle 2 (DC/GC)
Sonic heros.
This does depend on the player. For 2d games, I would say Sonic the Hedgehog 2, however, lots of fans say Sonic 3 & Knuckles. But Sonic the Hedgehog 2 sold the most of the 2d games, if you wanted to know. The best 3d game is either Sonic Adventure or Sonic Adventure 2: Battle.
well, sonic unleashed was originally gonna be called sonic adventure 3, then sonic world adventure which was gonna be the 3rd sonic adventure game, but then they had to come out with werehog and didnt make it the third sonic adventure. but they might be making a new one late 2009 or antime 2010
no