Bosconian '87

This older arcade game got a budget-priced home conversion. Fighting it out above the earth for a newly-reunited people, you must shoot out the alien craft to depend your people.

The game is a top-down shoot 'em up, with aliens to kill and rocks to destroy. Each wave has several Space Stations, and destroying these is the ultimate goal. A scanner helps you find these.

The ship can be brought to a stop, or flown in any of the four main directions. You must watch the fuel gauge, but extra fuel and improved weapons can be collected. There is a mothership which can be docked with for shielding.