Steam Birds Survival

In this turn based game, you are in control of a fighter plane in the Battle of London, 1940. Shoot down wave after wave of enemy planes, zeppelins and A.A. guns. Collect a variety of power ups and earn cash to upgrade to many different fighter planes with varying attributes. The ?Survival Mode? aspect to this game adds the need for strategy to ensure you stay alive and in the sky for any length of time.