Named after the Roman god of fire, pilot the Vulcan Raider through the caverns of Io to rain fire down on the entrenched units. Work your way along the caverns destroying everything in your path. Each level contains the entrance to the next cavern which can be opened by firing at the trigger switch. There are currently 9 levels to pit your skills against. The next level automatically unlocks after completing the current one. Your raider has shielding and power indicators at the top of the screen. These can be replenished by using the ship to touch the crystals hidden throughout each level (green - shielding / blue - power). The raider has the ability to both fire lasers ahead and drop bombs on units below. If the power runs out then the ship will fall to the ground and explode.