This game is operational level wargame based on univers of the Legend of the Galactic Heroes, is Japanese science fiction novel/animation. This game represent invasion Free Planets Alliance by Galactic Empire called "Operation Ragnarok".
Two players move the ｓｔａｒ fleets on the map which covers whole territory of the Free Planets Alliance. The purpose of the Galactic Empire player is the conquest of the alliance. The purpose of the Free planets alliance player is to crush the intention of the Empire.
As a story was so, the ability of the Admiral of Star Fleets influences a movement and a battle. A battle is resolved with the tactics chit choice and the Fire Power CRT. Various fleet tactics in the story are represent by the tactics chit choice.
Scale: 1 turn: 10 days, 1 hex: unknown, 1 unit: about 2000 space ships