1) Board wargame 2) Space opera novel
Found on
https://www.crosswordclues.com/clue/triplanetary
Triplanetary was a science fiction board wargame published by Game Designers` Workshop in 1973. It was a simulation of space combat within the solar system in the early 21st Century. The game was designed by Marc W. Miller as part of a series to be named `The Stars! The Stars!`. A second edition of the game was issued in 1981. In 1989, Steve Ja......
Found on
http://en.wikipedia.org/wiki/Triplanetary
No exact match found.
