Space Mines

Description
Space Mines is a 1-player arcade game for the 8-bit Atari.
"The Vahrenians are heading for Earth!", comes the warning call on the intercom. Remembering your orders, you rush to your ship, the only survivor at your tiny spaceport. The player launches a small ship from the center of the screen, which can move up and down. The player must avoid space mines and other attacking alien crafts to reach the top of the screen to destroy a Vahrenian spaceliner. They then must return to the spaceport, and try again.
There are 3 difficulty levels, which effects the number of space mines. The player receives 5% damage whenever they hit an obstacle, and it's game over at 100%.