Play games for free crypto

I saw many games in the play store and its says that you could earn crypto currency on those games in play store. Now, is these game are legit or not? Many people said that they earn crypto currency from it but no evidences, if anyone here earned from these games in play store please tell me about these games if i can really earn crypto currency from it.



I'll give you good reputation point if you answer my question because i want to know if these games are profitable or not. Thanks.