Spaceship Battle: Shooting

"Spaceship Battle: Shooting" is a shooting game that takes place in space. You have to destroy enemy spaceships.
2 enemy spaceships attack you at once. You have to choose which vehicle to shoot and destroy first. You will probably choose the spaceship that is closer to your spaceship.
You can choose how many enemy spaceships you want to destroy during the game. The options are: 20, 40 or 60 enemy spaceships.
Your weapon is a laser that hits the enemy spaceship at a certain distance.
You can move by pressing the buttons marked with arrows. You can move forward, backward, left or right by pressing the button. You only have to press the forward and backward button once and the spaceship will move. And when turning right or left with the spaceship, you have to hold your finger on the button. And if you want to stop, press the middle button marked with a cross.
You can use acceleration to move faster. The acceleration lasts for 5 seconds. In total, you have 100 accelerations during the game.
The shooting button is marked with the word "Fire". You can shoot at any time.
The free game is limited to seven spaceships that you destroy. But if you want to play the game to the end, you have to upgrade and buy the game.