Sonic : who's the best !!!

[Mr Khan]

For 2D Sonic: Sonic 3 & Knuckles, the combination game between Sonic 3 and Sonic & Knuckles. If the Sonic collection you speak of is Sonic Mega Collection, you have to play Sonic 3 and Sonic & Knuckles 20 times each to unlock it (easy enough, as soon as you initialize the game, simply exit it, you can have it done in 15 minutes for the best Sonic available)

 

For 3D Sonic: Sonic Adventure 2. Accept no substitutes