This is the improved version

Your plane is on its last drop of fuel. The enemy bomber is about to destroy a valuable factory. With your last remaining machine gun, you must destroy the enemy bomber before it reaches its target. When the enemy bomber drops its bomb the game will explode and you lose. To start the game you must activate the Group 1. To play the game enter the cockpit view and use mouse joystick to control your aircraft.

Critical damage of the plane should cause it to fall off the "holder". If it does not, you will have to imagine the enemy plane crashing into the ground. Also, shooting down the bomber may cause some parts of the environment to break. As long as the factory is intact then you win.

If anything goes wrong a restart should work

The bomber model