Click
in the game area with your mouse or hit the 'S' key
to start.
Use your mouse to sight
an approaching ship in your cross-hairs. A target
box will light up when an enemy ship is in your sights,
giving the craft's closing speed and range. Click
the mouse button to fire.
Whenever an enemy fighter
gets past you, it will fire on your ship. You will
see the screen flash and shake if they score a hit.
Watch your shields - when they go, so do you.
You can pause the game
at any time by hitting the 'P' key. Hit again to resume.
Use the 'M' key to toggle sound on and off.