To fire at an enemy ship with your Phasers or Photon Torpedos, you must first target it by clicking on it. (Click on it again to unselect it.) Or, choose Select Enemies from the Edit menu. Then press the appropriate FIRE button. (Keyboard: "P" to fire phasers, "T" to fire torpedos.) Note: see "The Onboard Computer" in this guide for useful Weapons/Shields features.
• PHOTON TORPEDOS are your most powerful weapon, though they are a bit slow. They can be launched singly or in SALVOs of two or three torpedos per target. (eg. If you have 2 enemies targeted and your salvo is set at 3, you'll launch 6 torpedos at once!) You can carry a maximum of 18 torpedos at a time. To replenish your torpedos, dock with a Starbase.
• PHASERS are focused beams of energy which travel instantaneously and always hit their target. The power of each phaser shot can be controlled with the INTENSITY up & down arrows on the command console. Max intensity uses more energy and hits the target harder. However, PHASER EFFECTIVENESS DIMINISHES WITH RANGE. At point blank range and max intensity, phasers are nearly as powerful as photon torpedos!
• SHIELDS use a lot of energy but are absolutely essential for defense. To raise or lower them, click on the Shields up & down arrows. (Keyboard: press "U" or "D".) Shields must be lowered to dock or use the transporters.