They aim to support the most popular games, however it will be hard to do so. For now they only managed to introduce Dota 2 into their platform. I'm not so sure about this platform. There are a lot of kids playing games that can lose their money there.
Most importantly, 1ST is not even used in their platform and the games they support. I don't know what's the point of using a typical point system and lottery rewards for PUBG... And who pays for these lottery rewards anyway?
They could go on with their plan of using their own token as a reward.
In any case, I bet they have implementation problems with Ethereum chain, they should do a swap and go for the ARK platform which seems to offer more tools and so far is very stable.