All these sites are somehow only for over 18 years of age. Some sites contain games, others porn, others something in between. Also dating sites.

https://www.parittomat.fi
https://www.pariskunnille.fi
https://www.partyclub.fi
https://www.happyhouse.fi
http://www.sinkkudeitit.fi
https://www.beautynet.fi
https://www.littleroom.fi