The game is about a battle against computer viruses. The protagonist controls an anti-virus that looks like a man on a flying machine. He is attacked by enemies and has to fight them off. The player can make it fly with the up and down keys on the keyboard. One also needs to attack opponents. If they damage the player, his level of life will drop and he may die. In this case, the game will have to be played from the beginning. Furthermore, each enemy has its own special attacks that it can use.