The Game

You control the gunfighter who starts in the centre of the screen. Shoot all of the enemies to clear each screen and go on to the next.

Space Snakes

These consist of a head and a tail. If you shoot the head, then the overall length of the snake will decrease by one. If you shoot any part of the tail then the snake will break into two and a new head will form. Shooting the head is the safest but most difficult method whilst shooting the body will bring in big points - but make life somewhat tricky. Entirely destroying a snake offers a big reward: the next alien to reach its escape craft just after an entire snake has been destroyed will count as three aliens. This offers the best method of completing a level quickly and getting a higher bonus score.

Exploding Pods

These pulsating pods appear periodically and should be destroyed immediately if possible. Failure to do so will result in them exploding. Surviving an exploding pod is difficult but can perfected with practice.

Saucers

Small spinning remote craft that spray fire in all directions. Should be destroyed but approached with care.

Laser Bolts

All the bottom and right hand side of the screen are two laser bases which fire laser bolts at regular intervals.

Avoid the laser bolts as they are harmful and indestructible. When two bolts meet an Astro Brick is formed.

Astro Bricks

These are harmless but inconvenient since they block your path. Simply shoot to destroy them.

Limpets

Limpets are a real menace as they home in on you whenever you go. Fortunately, they do not appear until quite late on in a level and can be avoided altogether by destroying snakes.