you play a ship that must protect the planet from invading
aliens,the player control a laser canon that can move horizontally in the air,rows of aliens move sideways while approching you and throwing missiles,
you earn points every time you destroy an invader
music:"Heroic Age Kevin MacLeod (incompetech.com) Licensed
under Creative Commons "Attribution 3.0"
-added 4 new levels
-changed the user interface graphics