Do you know any game which actually uses cryptocurrency? I saw a lot of coins which promise this, but usually It ends up in being scams.
Games are for fun, but It would be more satisfying to have a valuable currency for games.
Latest ICO that inlcudes gaming platform that used their token as a utility integrate in all of their games and you will earn cryptocurency as you play is The Abyss. Just visit their website to know more about the details. I heard it was a great platform for gaming industry.
Take a look for yourself, maybe you will find it interesting.