Heavy Weapon: Atomic Tank

In Heavy Weapon, the player guides a powerful atomic tank through several stages of opposing enemy forces in the Cold War. The tank moves only left and right, while its main weapon, a turret gun, can be aimed in a 180-degree span, and nukes can destroy enemies off the screen. The game's storyline revolves around an invasion by the Red Star, a fictional parody of the Soviet Union infused with elements of the Russian Empire, occurring in 1984. The player assumes the role of the commander of an Atomic Tank, tasked with driving the invasion back to the primary headquarters of the Red Star.

The game features a total of 19 levels/missions along with two game modes (mission and survival). In mission mode, one must blast through countless enemies and defeat a boss at the end. Mission mode provides three lives for every mission. Upon defeating the boss, the player visits the armory, where one can get various upgrades and power-ups for use in subsequent missions.