Yes you can play it only on dreamcast emulator but it is legal because you can play it for free and not spend money on stuff that want money freedom is happines enjoy !
Not without an emulator.
First you need a Sega Dreamcast Emulator (For original Sonic Adventure) or a Gamecube Emulator (For Sonic Adventure DX, which is an upgrade of the original). After that you need to download the emulator AND the ROM for the game you want to play. Note that the emulators are not Nintendo/Sega approved or licensed.
QUOTE: get a emulator and the sonic ROMget a emulator and the sonic ROM :QUOTEWhat?? OR you can go to this website http://www.megaupload.com/?d=YH8QOS1I !! I'm serious that it works. Full version. FREE! INCLUDES ALL FILES NEEDED TO PLAY GAME PROPERLY! I downloaded myself. ;) IT REALLY WORKS!!!!! THIS IS SLASHED!! :Ddoes this really work?
There is no such thing as Sonic Adventure Battle 1, nonetheless no Sonic Adventure is playable on Sonic Mega Collection.
But you can play metal sonic.
You can't play as Silver in Sonic Adventure or Dx, Silver wasn't thought of until Sonic the Hedgehog 2006, Play Sonic the Hedgehog 2006 to play as Silver.
The only two games that allows you to play Eggman is Sonic Chronicles: The dark brotherhood and Sonic Adventure 2 / Sonic Adventure 2 Battle.
No.
you can only play as super sonic when you fight the finalhazard.
sonic2online.com
you have to buy sonic adventure dx, sonic adventure 2 battle, or pantasy star online. sonic advenure dx and sonic 2 battle are for gamecube or you can play them on wii with a controller and a memory card and a gameboy cable.
Sadly, like every game since Sonic Adventure, you can play as Super Sonic ONLY in the Last Story.