I saw a fish game in the malls nearby and there are actually a lot of people age 30's and above even the seniors enjoyed the game. I was also thinking about the token used to play the game will be replaced with cryptocurrency. I think that's very possible in the future. Cash in some BTC to your account to be able to play, that's what I have in mind.
Actually there were two games that they get addicted, the fish game and the other one was the swimming competition. I don't know if it's popular in your place as well?