I like this game too because it also compares well to Red Baron, although they're obv not made by the same company. The major difference being that this is a third person view flight sim, and with a WW2 jap plane instead. You fight waves of other planes, and some boats and subs during different times of the day and scenarios; although mainly the sea and a few islands. Sky Destroyer is a basic air to air and to ground (level; ie, technically to sea) combat shooter game. It could be consider a precursor to the similarly quasi 3D (2.5) latters AfterBurner (good), Flight Of The Intruder (RTFM bad), and Top Gun (fun). Although obv not as good as Aces: Iron Eagle III (AKA Ultimate Air Combat, which is the best of the lot:) I also liked how you can choose to focus more flying in the air if you're more comfortable with, as it's slightly easier; instead of both at the same time. Beware of the big multi engine bombers though! They'll still fire at you from above. Gameplay is very simple, so are the graphics, music and sound FX. The screen warps horizontally if you move too much to the left or the right. And there's an altitude limit, although not stated in measurable units. Also if you get too low, you'll sink into the ocean. Use of a better perspective could've been better; specially in the air. Eg, just by adding a few clouds. Again, compared to RB this actually is indeed somewhat better in a lot of aspects; especially in that firing also has been improved, because you can clearly see the "bullets". And there's a secondary torpedo-bomb attack that works exclusively on sea targets too. Almost needless to say, I like the integrated autofire. What I didn't like is that you go down with only one hit, sadly. Yet despite the "improvements"; for some unknown reason, SD still comes slightly lower than RB overall in the fun factor though, unfortunately. So this is not a complex game by any accounts, but it was colorful and original to the NES; at the time, nevertheless. It was also nice to finally stick it to US for a change, and as an added bonus.:)