Yes, but how the miner get the games ?

Miners don't run the specific games. They run an application that uses the gpu power of their pc in order to stream games to the gamers.

Playkey has started recently and already mentioned on Cointelegraph: https://cointelegraph.com/ico-calendar/playkey
Gamers gonna like this project! 

At the presale stage of the ICO campaign, the company collected more than $3.9 million. That included $1 million from the American fund Uncharted Capital and over $1 million from Allrise Financial Group.

Allrise Financial Group is not a bank. And that’s great news for our borrowers, because we use private capital to make hard money loans secured by real estate quickly and efficiently. Even if your FICO score isn’t perfect. If a fix and flip, commercial rehab or small business startup is in your future, then it is time you met Allrise.

Almost $300m frozen on the parity wallets.

I hope PlayKey was not affected. Can you confirm that?

They didnt using parity wallet as I know. Otherwise they would say about problem.