if that will happen, where will the value for the crypto come from. One really important thing is, that earning with gaming might have its flaws in regulation regarding taxing, gambling and whatsoever.

While i would like to have my own clash of clan "crypto" mines or pumps, there must be a value or a worth behind the crypto. At the moment, i don't see the need of a blockchain behind a game to circulate tokens around. But who knows, they might just cover the crypto by skins;-)