I don't know if someone has already made a thread on this game, sorry if it has been made already.
SmallWorlds is an online 3D web browser game it's free to play. But there is V.I.P. membership available. You can talk with people, play missions, play games, enjoy activities, create artwork, design spaces for yourself and others' enjoyment, participate in PvP games, and more. The game is truly what you make of it. I joined in 2009. It's very fun, quite realistic, and very original. I suggest you atleast try it out.
This is summary, just barely scrapes the surface of the game. I hope you all enjoy!