In the past plane games were setup in a very arcade style where you can run out of fuel then crash your plane which meant you have to complete each level or mission fast normally if you will drop out of sky.
Starting screen shown here which gives a strong army feel to the design or how it looks overall.
It is faced paced game but manage with some practice until you get good enough at this game overall.
The green square allows you to shoot through this area so use it to target the enemies or the building you want to destroy overall.
The weapons you fire from the weak weapons like bullets to rockets to being stronger you can fight enemies on the ground or destroy builds on the ground as well for a lot of people TNT building was overall something which made a lot of these sort games a lot of fun and exciting to do since many from these games oddly enough used them to help inspire them to become like real pilot or work in planes one way or another as like plane engineer or someone who creates software to teach them how to fly better or simply learn to fly on computer software before you do the rea flying overall.
The gameplay still makes it fashional to play a bit today but no way as popular as like say Sonic overall but for people into shooting plane games it's a nice find to me overall and you do have a storyline where the army guy tells you about your objective each time before you start out playing the mission each time which is pretty cool like being in the real armed forced to me overall.