The Earth is being invaded by UFO’s probably from MARS. The Thames Estuary Defense systems are on HIGH ALERT. One such system is the RED SANDS Maunsell Fort Ground to Air Gun Array that you find your self in charge of here! So get a grip a figure out a way to save your self and other people from death or worse… abduction.
You only have 60 seconds and 500 gold to spend, to freeze the game and go into UPGRADE click on any tower.
The GUNS are old slow and week and are in need of upgrading
The upgrades are
You will be rewarded from your results