Actually, the title speaks for itself. Chopper is just another side—scroller with a missing plot and nice graphics.
Okay, I'll start in order… The plot of the game was not noticed, but it is known that we, that is, you, the helicopter pilot will have to rescue defenseless "good guys" from armed "bad guys". The first ones stand still and wave their hands, and when they see a helicopter landing, they immediately rush to it headlong. The second is firing bazookas, tanks and other aircraft at a flying trough. The "trough", however, is not harmless at all: it is armed with a machine gun, rockets and bombs, with which you can easily kill not only the enemies, but also the civilian population, at the same time causing damage to local buildings. Helicopter control is quite arcade: four directions plus a U-turn, nothing complicated. However, there are nuances like mandatory vertical landing. It is undesirable to rush horizontally to the "hostage", since the result is predictable: a head torn off by a screw and a restart of the mission.
What can I add? Good gameplay, not disgusting, but firmly stuck in the late 90s graphics plus an excellent soundtrack (bz is easily extracted from the package). You can play the demo for an hour, longer — only for money, $ 10.
P.S.: The iPhone version is available, costs $5.