1991 Digital Integration (UK)
by Les Doughty and Lee Burns
Brilliant flight simulator, possibly the best on the Speccy.
It has all the great features other games like Fighter Pilot, Tomahawk, etc, have but takes them to a higher level.
The integrated missions make the game really engaging and wanting for more.
It's also a bit too complicated, so reading the instructions is crucial, otherwise you will end up just wishing you've loaded Pac-Man instead!