This says little in the way of specifics. There are a lot of different cryptocurrencies competing for use in games. The winners will be the ones that players know, and can use for the widest variety of payments.

Any fast currency that can scale to a large number of micropayments is a contender. Game developers are professional and understand the industry, so I am sure they know what advantages to press.

The actual games that run on blockchain are a different species.