Crucis Margin is a 1981 science fiction role-playing game supplement published by Judges Guild for Traveller.
Crucis Margin is a supplement which details part of the Gateway Quadrant which is nearby to Imperial space.
[1] Crucis Margin was written by Dave Sering and was published in 1981 by Judges Guild as a 32-page book with a map.
Together these sectors comprised the Gateway Quadrant; along with complementary adventures published by Judges Guild, they offered the most comprehensive and cohesive view of any part of the Traveller universe, with the possible exception of the Spinward Marches.
"[1] Tony Watson reviewed Glimmerdrift Reaches and Crucis Margin for Chaosium's Different Worlds magazine, and noted that "As pre-generated sectors for Traveller play go, these offerings by Judges Guild are about as good as any on the market.