Conquering the master is the aim of this fast action game and it's done with those familiar left, right and fire controls. There are ten waves of aliens to overcome, each with its own characteristic attack form.
The tenth wave is where you must defeat the master, who sits at the top of the screen behind a shield and moving force-wall. You have to avoid or shoot the constant stream of aliens while trying to shoot through a gap in the force wall so as to chip away at the shield. Not an easy task.
P. Smooth colourful graphics.
P. Some really tough waves with interesting patterns.
N. Ten waves may not be enough.
N. Collision detection isn't perfect (you'll be grateful though).