Yes, some gaming technology will ask restriction in order to age should not be more than 18 years old. So for ganging, not our wish whether to participate in it or not because with our interest we are buying the games.
I agree if the game product is must be above 18 years of age, some games literally ban those users who are under aged, I think smart city eco is aware of that matter, they will have a solution regarding that, after all the system is still developing.
Some gaming systems are into this method to know if the player is qualified, in case of smart city eco, I think children are not allowed in their games, because it more on gambling and bidding, which is not appropriate at their age, smart city eco is a fine platform, using SCE tokens to support their project is also good.