The result is POD: Planetary Orbital Defense, a 15-level shoot-em-up bonanza that culminates in a boss fight against an alien invasion.
One part Space Invaders and one part Missile Command, POD starts you off right away defending your cities against an onslaught of alien creatures against the backdrop of a driving, deep bass beat. Initially your defense is but a single cannon with a limited supply of energy that regenerates with time via the surrounding power plants.