Which latest popular games they have? I dont played for a long time, because I dont have time now, but may be Ill try this 
GTAV, Overwatch, Dota2, WatchDogs 2, Witcher 3 and so on and so on, you can see the list on web site.The games they have are very big, and those games have millions of users. I cant find more information on the servers they will use. Or will they make a partnership with a blockchain that focus on renting out servers? I cant imagine the computing power you need with millions of people playing
Playkey use GTX1080 powered servers. Miners with Nvidia or AMD powered rigs will join Playkey Ecosystem