Very good flight simulator

Plus:
The flight simulation is great, the landscape above a certain minimum altitude is fascinating realistic. It is also very easy to spice up the whole thing with orthophotos from the Internet for free.
The cockpits of various machines are also very nice modeled in 3D.
Minus:
Most airports do not have a building but are only airstrips (as far as I can tell vmtl. Similar to the original). This is visually not that great either.
Conclusion
Super Flight Simulator