To summarize an answer to both of your questions:
I think the majority of people play those games for fun, not for earning money. So I think the ETH rate doesnt really matter, the game has to be fun and eg. challenging to be played!
Thank you for reply!
And very big question which we want to discuss with our community: In every card game there are paid features ( for ex. Gen 0 kitties, cards packs and etc.).
In our game every user will have ability to buy any card on Auction but instead of this we will offer ability or CREATION your own cards (Digital Artworks). So how do you think which price in ETH is ok for everyone for this function?
No, they are not needed. Cryptocurrency should be used in a wider and more importantly productive sector of state policy, and all this will not receive proper demand.
Thank you for your opinion and reply!
We think that crypto games can become a trigger for the widespread use of blockchain and induce growth or crypto community. Isn't It?