New flight simulator is out for PC and Mac. It's not too complex but has the essence and features many missions. Anyway it costs just a few bucks so...
Fly 24 airplanes with realistic 3D cockpits
Explore and enjoy the beautiful open world of Hawaii in a free flight mode
50 exciting missions available – from sightseeing to rescue operations
Fly to 21 famous airports around the world
Start your own airline and expand your fleet
Customize the skins of your planes and upgrade your fleet for better performance and handling
Master difficult challenges like bad weather landings or engine failures