SUGGESTION FOR A [PRIVATE GAME SERVER]

HELLO
I hope I chose the right category for my question,I want to invest in a private online game server and I want some suggestions about online gaming which are more popular, which could be attractive,easy to create and manage.
I'm waiting for your suggestions below.
thank you

Just choose a game you like, then learn the game and then create a server. No sense creating one at a Random game witout knowledge about it.

#moved

Maybe Aika? You know, I've never seen many of his private servers.