Game is pretty good. The aircraft in game can be very good looking for an 8-bit based game.
The game can be pretty repetitive though...fly out...clear a map...come back...rinse and repeat...
My biggest issue though is the in-game currency. You don't come across good amounts of miles points too often in game, which is what you need to upgrade your crew, train skills, or (most importantly) repair your damaged aircraft.
If you happen to lose all of your aircraft and not enough miles points, you'll damn near want to quit. I know I did..