Monochrome

Monochrome is a Shooting Game set in outer space. You take control of your spacecraft and fight your way through 70 levels of action. Each level has multiple waves of enemies looking to gun you down, but you can use your skill to avoid their fire and destroy them using your weapons. Each enemy killed will reward you with money which you can use to upgrade your ship with a choice of up to 21 weapons. Conserve your lives though as there will be a boss fight every 10 levels!