There is a leaked document of the proposal related to EU KIDS Act , which proposes requiring age verification for all online games. Also note that this proposal is not anywhere near to pass. But it exists and is going to be dicussed
Stop Killing the Internet initiative
If you’re EU citizen sign this petition: https://eci.ec.europa.eu/066/public/


As far as I remember the german national ID already has a function to do age verification anonymous (zero-knowledge proof). have to say I am kinda okay with that solution.