@LordMordred I've been playing Fallen Earth Classic, which is a post-apocalyptic MMO with a look similar to Fallout 3/New Vegas as opposed to Fallout 4.

The faction CHOTA (Children of the Apocalypse) is a combination of Caesar's Legion and the Joker with a clown rather than a roman aesthetic. Their main base is in a post apocalyptic fairground.

It's totally free and doesn't even have a cash shop or microtransactions at all.