Hi Everyone! I publish the game Eight Planes several days ago. Really you can't find eight planes in the game at the same time.
I will tell you in the next release. You will understand why.

In the game, you operate with the mouse to control both your plane (LMB) and the machinegun (RMB).

The machine gun is extremely effective (not like in the real world).

Here is a video of several versions. 

In this game, you have to fight both enemy planes and warships.
Sometimes missions may seem to be very difficult, don't give up and you will break through.
Some warships are protected by a magnetic shield.
You must fly inside a protected area to successfully complete a mission.

When you are attacking your enemies' planes you are getting scores that can protect you from their bullets.

Unprotected ships are usually armored with guns and rockets. 

Have a good time! 

Here is a link to the game page https://markerplay.itch.io/eight-planes-demo