You can`t.
There is no such thing as Sonic Adventure Battle 1, nonetheless no Sonic Adventure is playable on Sonic Mega Collection.
You can't. It's not on Sonic Mega Collection or Sonic Mega Collection Plus. Sonic CD is only available on Sonic Gems Collection for Nintendo Gamecube.
no, sorry
You can't.
Actually, you can't...... You just.... can't... If you want to play Sonic Adventure 2 Battle, you'll have to buy the game Sonic Adventure 2 Battle (Not trying to sound stupid by the way.)
no such thing
Sonic Mega Collection Plus is the same as Sonic Mega Collection except with additional unlockables.
It is not on Sonic Mega Collection but it is on Sonic Gems Collection.
i think PLAY ALL the game
You have to beat every game 50 times
No, but sonic mega collection does. It's locked at first, so you have to unlock it. I would tell you how but I don't remember, sorry.
Sonic Mega Collection happened in 2002.