Xevious (Arcade) is the Retro Game of the Day for 13 July, 2016

From Wikipedia:

The player must use an 8-way joystick to pilot a combat aircraft called a Solvalou, which is armed with a forward-firing Zapper for aerial targets and a Blaster which fires an unlimited supply of air-to-surface bombs for ground targets. The game, presumably set in Peru, was notable for the varied terrain below, which included forests, airstrips, enemy bases, and mysterious Nazca Lines-like drawings on the ground.

There are various aerial enemy aircraft which fire relatively slow-moving bullets at the player, as well as (presumably unpiloted) fast-moving projectiles and exploding black spheres. Ground enemies are a combination of stationary bases and moving vehicles, most of which also fire slow-moving bullets at the player. Giant floating Andor Genesis motherships appear in certain areas; these must be defeated by knocking out their cores, and are considered one of the first level bosses to be incorporated into a video game.

(Actual writeups are hard when you feel terrible.  Been in bed all day and I can’t think to write. Sorry.)