Stage 1 Infiltrate the Mars Corporation! The Mars Corporation is a military-industrial complex which is a front for Spider’s secret headquarters. There is a small time machine hidden somewhere within. Your mission here is to steal the time machine and travel to each era to investigate Spider’s activities, however…

Stages 2 through 4 progress randomly through eras from the primeval era to the Japanese Sengoku era.

Primeval Era There shouldn’t normally be any humans living during this era, but there appears to be primitive men living here. These are likely Spider’s henchmen. Your only choice is to somehow find a way to make progress while responding to the constant attacks of the primeval era men as well as the attacks of the dinosaurs. Egyptian Age Is it the Pharaoh’s curse or one of Spider’s evil schemes? As a strange feeling comes over the area, the ancient Egyptian army begins to attack. Their attacks are brutally intense and are sure to force you into the fight of your life. The Japanese Sengoku Era In what could only be Japan, samurai and other ninja approach in tenacious attacks. In this age of war, even women participate in the attacks. And then the one lying in wait for you after all those attacks is none other than Nobunaga, the arch-nemesis of the Fuma ninja clan. But is he the real Nobunaga?

Stage 5 The Three Kingdoms Era Spider has now had all his ambitions crushed at the hands of the Ninja Commando forces. At Spider’s final Asian stronghold, he sends the matchless Three Kingdoms era general Lu Bu to attack the commandos. Stage 6 World War Two It’s Spider’s final hideout! This is Europe during World War Two. Bringing state of the art heavy tanks from the future, Spider challenges the commandos to a final battle. Last Stage Future Mars Corporation With Spider’s death the corporation no longer has a boss, but if the main computer is not destroyed a 2nd or 3rd ‘Spider’ could appear. With the future of mankind in the balance, the final battle begins.