So, i have figured it out (i think)

[Tactician]

Funny as I cannot remember playing anyone from Iran in 3 years. On the other hand, I think the 50 million players completely exaggerated as I uninstall/reinstall the app several time per day myself. And I might not be the only one.

The 50 millions can be halved, and even quartered with the amount of clone accounts in this game. The more appropriate term to be used is 50 million game accounts have been created. Then it comes to how many are active or semi-active, and how many are abandoned. So, the real, current number of different persons playing this game is far from the 50 millions.