It's classic space mayhem arcade game, Lunar Command Arcade Game. Protect your lunar base from a missile strike by shooting down the incoming missiles. You have a limited arsenal, so be precise. Your bases must survive. If you do well, you'll be rewarded with base repairs.
To play Lunar Command Arcade Game you aim the crosshairs with the mouse; fire your missiles with the left mouse button; shoot Mega Scuds with the left mouse button click + Space Bar. Good luck and have fun playing Lunar Command Arcade Game free online!