Air Duel (World, M82 hardware)

Take to the skies in Air Duel, a fast-paced vertical shooter released by Irem in 1990. Two players can team up to pilot advanced aircraft through increasingly challenging levels, battling enemy planes and fortifications. As you ascend, utilize both a standard gun and guided bombs to clear your path and destroy the opposition’s aerial defenses. The game's vibrant graphics and energetic soundtrack create an engaging experience as you progress through distinct missions. Distinct musical themes from Air Duel have appeared in later Irem titles like Gun Force II and Metal Slug, demonstrating their lasting influence on arcade music. Air Duel features straightforward controls—an eight-way joystick for movement and two buttons to fire your weapons—allowing players of all skill levels to jump right into the action. It's a classic example of the vertical scrolling shooter genre, offering cooperative gameplay perfect for sharing the challenge with a friend.