The player gets in-game currency for each destroyed enemy spaceship.

That's nice for understanding, but not much for blowing up enemy spaceships.

Worries streak towards him like enemy spaceships in one of Gary's video games.

A radar on the screen helps the player locate the enemy spaceships.

When all of the enemy spaceships are destroyed, the player faces a boss monster.

Waves of enemy spaceships appear in groups of up to eight.

The decoy and the enemy spaceship grew large before them.

At the end of every stage (except for the first one), the player meets a huge enemy spaceship as the stage's boss.

Despite this, and completely by accident, he fired the shot heard round the fleet - that destroyed the enemy spaceship.

From the launch and landing area on the opposite side of the base, the enemy spaceship protruded into view above the buildings.