This game is a doujin that is produced for sale only at Japanese game shows. It is printed on-demand, and in order to get it you have to order in advance and pick it up at the show. It is not for sale to the general public.
The game is set in the universe of Yamato 2199, with the player commanding the forces of the Gamilas Empire against the barbarians of the White Comet Empire. The game is closely based on Dark Nebula published by GDW.
You are in command of the Gamilas Empire [Great Garmillas Empire in official translation] facing the invading barbarian White Comet Empire in the vicinity of the Small Magellanic Cloud. Also, reports have come in that the defenses of the faraway Teron Quadorando sector have been destroyed by a lone indigenous space cruiser called Yamato.
With your limited budget you must construct ships to fulfill your mission. Both the savages and the natives oppose you, seeking to defeat you as you aim to do to them.
The game plays similarly to GDW's Dark Nebula and includes a six-piece map. The counters need to be assembled.
Game sequence is as follows:
Barbarian (Teron) Player Turn
A. Barbarian Maintenance and Production Phase
B. Barbarian First Movement Phase
C. Barbarian First Combat Phase
1. Space Combat Subphase
2. Anti-Planetary Combat Subphase
3. Ground Combat Subphase
D. Gamilas Special Movement Phase
E. Gamilas Counterattack Phase
1. Space Combat Subphase
2. Anti-Planetary Combat Subphase
3. Ground Combat Subphase
F. Barbarian Second Movement Phase
G. Barbarian Second Combat Phase
1. Space Combat Subphase
2. Anti-Planetary Combat Subphase
3. Ground Combat Subphase
Gamilas Player Turn
A. Gamilas Maintenance and Production Phase
B. Gamilas First Movement Phase
C. Gamilas First Combat Phase
1. Space Combat Subphase
2. Anti-Planetary Combat Subphase
3. Ground Combat Subphase
D. Barbarian Special Movement Phase
E. Barbarian Counterattack Phase
1. Space Combat Subphase
2. Anti-Planetary Combat Subphase
3. Ground Combat Subphase
F. Gamilas Second Movement Phase
G. Gamilas Second Combat Phase
1. Space Combat Subphase
2. Anti-Planetary Combat Subphase
3. Ground Combat Subphase
The game includes three scenarios with specific victory conditions for each.