Aliens from the planet Psycastria have built powerful space platforms from which they are attacking the smaller planets of the galaxy. The consequences of a Psycastrian victory are too terrible to contemplate. They must be stopped at all cost.

Start the game by pressing 1-4 to select from 1 to 4 playres. (If you want to use a joystick, press FIRE first). You start with three lives but gain an extra life for 30,000 points.

You must destroy the ten circular energy pods to be found on each level then land on the main landing strip, signified by leading arrows on the left hand side of the strip. The Psycastrians in their strange shaped space craft will do their best to stop you - and you must take care not to crash into the high buildings dotted throughout the space platforms.

In between levels there is a bonus game in which you destroy aliens which fly across the screen.

The consequences of a Psycastrian victory are too terrible to contemplate. They must be stopped at all cost.

Good Luck!

Z - Left, X - Right, * - Up, ? - Down, RETURN - Fire
Cursor Up/Down - Pause/Restart. Press S whilst paused to toggle sound off/on.