As far as jet-sims go, this is by far the best one out there. The required specs aren't high, and the graphics while comparable to Microsoft Combat Flight Sim 3, are far smoother and less resource intensive. The manual only comes on PDF, so if you want to take it seriously, I recommend printing it off and learning all of the key-strokes as soon as possible.
Originally I thought it was a fault that you could only fly variants of the f-16, but games that allow you to fly multiple jet aircraft lack realism in the extreme. This provides enough variation to be interesting, without loosing touch of the flight-model.
I recommend this to serious flight-sim enthusiasts, or anyone interested in fighter planes. After getting good at this game, you could feasibly jump in a real f-16 and fly it quite well, which is saying alot.
The training missions are a great way to learn to fly in smaller steps, but once again – it's best to have the manual and key-strokes printed off in front of you to avoid initial frustration.
Great game, we need more games of this calibre on consoles!