Greater East Asia Co-Prosperity Sphere is a strategic level game of the Pacific War beginning in 1939. The War in the Pacific does not necesarily begin in december 1941. The game has one-year turns and ends in 1944.

Japanese first edition (Bonsai Games):
Boxed (8.75" x 6.5"), a mounted 16.5" x 11.5" mapboard, two bilingual playing charts, 24 full color bilingual mini-cards.
Quarterdeck International added a concise 12 page, full color English language rulebook.

English first edition (Special Ops magazine):
One map, 50 big counters, 24 cards, 8 page English rulebook, 1 player aid.