This is a nice version of an old plot. You control a gun which can be moved from side to side along the bottom of the screen and with it you must protect five humanoids from the attention of swarms of bird-like creatures.
These birds are tough to kill and require several direct hits before they bite the dust. From time to time the birds lay eggs which fall to the ground, hatch and liberate nasty little objects which run after your gun and try to destroy it.
The loss of all men results in you losing a life. You start with five lives and pick up extra lives as you score points.
A very smooth game using an enlarged screen, excellent graphics and unusual sound.