Big city

is UE4 good engine for making big city, like in Mafia 2 or even little bit bigger? Or do you know some other good engine, which I can make game in big city on?

Thanks for answers.

As far as I know, theoretically, an engine like UE4 and Unity should both be more than capable of doing what you describe. It might not be straightforward, but I’m sure it’s possible without having your final product run poorly.