There are a few out there who just couldn't wait for the PC port of Grand Theft Auto V. So they decided to mod another fresh open-world game, ArmA III, to give it a much more GTA-esque flavour.
Not bad for a start. With civilian characters, rally stages and other kinds of mods in the works, who knows where this giant open world will end up. There's a reason why the "auto" part is missing from the video's title.
Grand Theft ArmA 3 [GeekFurious, YouTube]