Vault Assault is a port of the classic arcade game Space Zap. You control the guns of a space station, and must defend it against attack. Enemies will appear on the four sides of the screen, then launch their weapons at you. If they hit you, your station is destroyed. Lose all of your stations, and the game is over.Although Vault Assault is a pretty faithful port of Space Zap, it is missing one crucial element - the Attack Satellite that circles your station and attempts to crash into you periodically. The Attack Satellite helped to break up Space Zap into rounds, and gave the player something different to shoot at once in awhile. Vault Assault really would have benefited from this, because there is no break between rounds, and nothing different to shoot at. Just the same four enemies, over and over. Vault Assault is well done as far as it goes, with decent graphics and sound and a great "twitch" play mechanic. It\'s a good game for a quick action gaming fix now and then, but there\'s just not enough variety in gameplay or additional game options to hold your attention for very long.