The cannon defends a city, must keep them out the
enemy. Every time hits a pass to make money must go buys the
weapon to promote hits a more formidable enemy. Tries you to be
able to gain how many, projects on the several pass. The A key
was controls the turret launch bullet, S is under the control the
turret launch bullet, the mouse localization, nearby the turret green
strip is the ball number, used up can the self-recovery, but needed
the certain time. After each pass had ended may increase the HP
life value, the purchase weapon, then continues to make a connection
the pass. HP is the zero hour hangs.