Even though the game is old, it is one of the best business simulators on the market. Very good varied with things to do in the game too.

Everything Sim City 2013 missing. Get bugs, water physics, modding, and more.

I have not bought this game physically (recommend buying it on Steam, where I got it for 200kr without sales), but there is one game that is incredibly good. It is different from Sim City in many ways, and the game is varied with enough things to do. In addition it is incredibly easy to modders game, which effectively adds much more to play with. The only thing I prefer the game is that starting new cities are not exactly fun.