Crank'n'Gun

Soldier, you are the final line of defense against the clanker swarm. The Command Center has authorized the use of the M-8 Rotary Platform—the pinnacle of ballistic engineering. There is, however, a critical limitation: the firing mechanism has been bypassed. To annihilate these clankers, you must manually crank the CRANK at the side of the gun. Maintain the rhythm, keep the barrels spinning, or those clankers will overrun your position. Discipline is your only ammunition. Hold the line. SOLDIER!