This is 4th part in the Momentum Missile Mayhem Series. Your goal in this action game is to shoot energy balls at inbound alien vessels before they reach your home base and do significant damage. If your shields are high you can ram the alien ships. Use WSAD KEYS to move around. Use YOUR MOUSE to aim and shoot. Hold LEFT MOUSE BUTTON until the cursor turns from red to green and then release it to shoot energy balls. If your shield level is high you can ram small enemies. Crashing into heavy foes will cause moderate damage. Watch your shield level, if it reaches zero you will die! Good luck!