SABOTEUR
• At least 5 prototype versions exist. The earliest is dated 5-20-83 and the latest is 12-20-83. Only the latest and 2nd latest (9-2-83) versions feature the main rocket comprised of the letters "SABOTEUR". The biggest visual difference between the last 2 versions is with the bottom area of the screen where the copyright date and score counter is. In the 9-2-83 version, the background color is red (picture #1). In the 12-20-83 version, only the background areas to the left and right are red (picture #2).
• Holding LEFT+RIGHT or UP+DOWN and pressing FIRE causes your shot to remain on the screen. If you do this 4 times, you’ll “use up” all your shots and be unable to fire. {Matthias David}
• BUG: Some (all?) prototypes may have some problems running on an original “heavy” 6-switch VCS model.