Space Zap - MAME - Shoot 'em Up

A multi-directional space shoot'em up game. The space colony is in danger his defense base is being attacked by a alien threat it comes in four differents quadrants and their attacks are devastating, quickly use the cannon to destroy them and release the base of the hostile threat must be quick because time passes, the enemy increases the intensity and speed of attack and can exploit its base you must avoid this, you must using your control skills at win the mission and defend your base.