Instructions for


Mastertronic, 1987

Written by Chris Owen, HTML'd by Arnt Gulbrandsen.


Keyboard, Cursor, Kempston

Aim of the game

Rasterscan, a large damaged spaceship, drifts uncontrollably towards a nearby star. The craft can be repaired and flown away from the star, but the only means of doing this is using a maintenance droid, also damaged, called MSB. The droid has a broken brain and is now only capable of repairing toasters; it has no knowledge of how to operate a space ship. This is where you come in...

Game play

You control MSB and can move it through a labyrinth of coloured power cables and piping. A display at the bottom left of the screen shows MSB's position within the ship. Once repaired, the droid can plug into and operate the ship's machinery and instruments. Every piece of equipment has a function, and once repaired it can be connected to the ship's power supply and reactivated. MSB's passage through the ship is not unobstucted. Locked doors block certain sections of the ship. By manoeuvring MSB into the jaws of upturned spanner heads, logic puzzles are revealed, differing from lock to lock. Once solved, the door is opened and MSB is free to bounce on its way. The bridge contains a scanner, showing the ship's position as a flashing point, the star to which it is being drawn, and several planets. The scanner is triggered by flicking on, in the right order, a series of three switches contained in a locked room close to the bridge. MSB can pilot the craft from a control room near the scanner. Here four indicators show the speed of each engine, and a central circular display gives the Rasterscan's direction and relative speed.


"An unusual concept which has been done justice in its execution."


75% (CRASH #40, May 1987)


A peculiar game which is alternately good and frustrating.


Up    - Q               }
Down  - A               } Joystick
Left  - O               } controls
Right - P               }
Fire  - SYM/SHFT        - Joystick fire

Nettverksgruppa, 10/9-94,