Here are 6 disks.
But what are they? It is for sure that they are from Japan, official merch for the game...and that's it. There are 6 in the set, each with the same background, Forces logo and a different character. You can collect Classic Sonic, Modern Sonic, Shadow, Knuckles, Tails, and Infinite. They're all CG characters. The Tails is a bit unusual because he looks agitated or concerned which is a seldom seen expression for him. Knuckles appears more thoughtful than aggressive which is also an interesting choice. Do you know what these are? You can write in for credit.