HeliFire (set 1)

In HeliFire, players assume the role of a submarine crew facing relentless aerial assault from above. This two-player shooter challenges you to eliminate waves of helicopters while navigating underwater dangers and avoiding dropped bombs. Each helicopter presents unique attack patterns and increasing difficulty as you advance through the game, demanding quick reflexes and coordinated teamwork. Published by Nintendo in 1980, HeliFire utilizes an Intel 8080 processor and a dedicated sound chip to deliver its gameplay experience. Players control their submarine using an eight-way joystick and a single button for firing. The original Japanese release of this gallery shooter offers a tense and engaging cooperative challenge for two players seeking arcade action. Interestingly, plans were once in development for a Nintendo Entertainment System port of HeliFire, though it was ultimately cancelled.