Space Opera: Before the better-known Black Box was the Blue Box.
As far as I can tell, the contents are essentially identical between the sets.
Space Opera RPG (1st edition)
1980 … Edward E. Simbalist & A. Mark Ratner & Phil McGregor … Fantasy Games Unlimited (FGU) 7101
Space Opera Science Fiction Role Playing Game
Volume 1: Characters & Starships
Volume 2: Equipment & Combat & Campaign
- Starship Data Sheet & Planetary Survey
- Military Intelligence Report (Planet) & Novagun Action Hit Table
- Planetary Culture Report & Novafire Success Factor
- Character Record Sheet & Straddling The Target & Novagun & Megabolt Ranges