At the moment I'm playing American Truck Simulator. If you've played European Truck Simulator you know what to expect. If not, you drive trucks. You start off doing jobs for companies until you can save up enough, or borrow enough, to start your own company and buy your own truck. From there you can buy more trucks and hire drivers.
I like political and/or historical simulators; I do like sport simulators as well but don't play them quite as often. Europa Universalis 4 (EU4) and the Pro Cycling Manager games are my favourites of each genre.