I had Sonic adventure on my dreamcast, it was not good and as far as I was aware it was a universally held opinion. The sequel was not cause to revise my opinion either. In both cases it controlled poorly (not even "not like sonic"* but generally poorly), the story (such that it wasn't) was abysmal even by computer game standards of the day, the gameplay if the controls hadn't sunk it did not any better thanks to poor levels, broken gameplay flow and various other things that usually mark a bad game. This all combines such that I am not sure there was even a kernel of a good idea in there. *I had basically every master system and megadrive sonic, and had played the game gear entries as well. I even enjoyed sonic 3d. In recent years I have encountered those which hold that it was not only not a bad game but actually a good one. I find this turn of opinion to be incredibly jarring. There have been occasions where I have warmed to games long after my initial play through, not many and most of the times I have tried it (Phantasy Star 3, afraid not. Chrono Trigger, not sure why I should consider it relevant post 32 bit era. Monster hunter, still good on paper but boring in practice) it has not worked. I have no cause to doubt myself but I do have to try these things. To that end what is the definitive version of Sonic Adventure 1 and 2. Original games, fan hacks of them (not that there seems to be that many), controller adapters (the dreamcast controller is not an all time great, the gamecube one is Nintendo's best but that is not high praise) and whatever else I might need to consider. I do not care about the minigames and as long as the graphics work I do not much care there either. Speaking of broken gameplay flow I am also up for mix and match play -- if I can ignore episodes/seasons of a show then I see no reason why I can not do something similar for games (I will probably seek a way to cheat my way past the fishing).