[djur]

The title of this discusses losing "best players", so I was expecting the bug to be related to player performance in some way -- having won too many games, or scored too many points, or collected too much loot, etc. The bug as described doesn't appear to be related to gameplay at all, so I'm not sure what the title was referring to. Unfortunately, the actual bug appears to just be some Unity code incorrectly parsing data related to in-app purchases.

[naniwaduni]

It's "best players" from the vendor's perspective: players found willing to pay money out of pocket.