
The headline says that this was the successor to Gradius and Salamander. The Gamest is apparently from 1987.
Note the big stationary Moai in a Gra1-stage-1-like area. The ship edit mode doesn't really look Konami arcadish IMO, rather MSX or similar.
I couldn't find any info on this early version of Gradius II, neither if I typed the name in English nor in Japanese. Has anybody heard of Revenge of Moai before, apart from the Gamest news?