Ok, let's just put this on the record right now: Rockstar Games in no way, shape or form invented open world gaming. According to Wikipedia, that honor goes to some space game you've never heard of. Heck, Rockstar wasn't even the first person to go with 3D graphics. If you want the genius behind that, you're talking about some other game no one has ever heard of.
And yet, Rockstar's juggernaut still endures. No, "endures" isn't the right word. "Endures" implies that it releases and does respectably despite not being anything new or exciting. "Grand Theft Auto" doesn't endure, "Dragon Age" endures.
"Grand Theft Auto" dominates.