Cryptocurrency and the GAMBLING industry can be very suitable, but I am not very sure about the cryptocurrency and the game industry. More than 10 years since the creation of Bitcoin and a few years after most of the big altcoins were made, I can't see the game using cryptocurrency to buy and sell virtual game items to be really popular and successful. Congratulations on the Minecraft server that uses BTC and let's hope the Fortninte clone game will be launched successfully, but other than that the use of crypto is gaming is a good use case, but it's not the only use case. 
Not sure about in-game items but we can easily buy and sell gaming accounts with the help of bitcoins as most of the gaming buy-sell accounts platforms accepts bitcoins or similar payment methods. For example playerauctions support crypto and you may read more about it here: https://support.playerauctions.com/hc/en-us/articles/360034263533-How-to-Pay-with-Bitcoin-USD-Coin-Ethereum-EOS-DASH-Bitcoin-Cash-or-LitecoinIf I'm not mistaken, Twitch accepts crypto payments. Now this is the largest platform for broadcasting games and it's cool that it supports crypto
TWITCH removed bitcoins you can read about it here: https://cointelegraph.com/news/streaming-service-twitch-removes-crypto-payment-options-reddit-user-reports.