There's also another game that just came out that is utilizing its own cryptocurrency. It's called Crypto Idle Miner by Hora Games. Send me a message on discord if you are interested (xCRO55xF1R3x #7111), or check it out at cryptoidleminer.com. I'm not very savvy with the behind the scenes of gaming and cryptocurrencies, but they have a lot of info if you are interested.