Countermeasure is a classic tactical action game for the Atari 5200. Released in 1982, it combines elements of strategy and arcade shooting. With an overhead view, players navigate a tank through a maze-like battlefield, with the crucial mission to prevent a nuclear catastrophe. You must decipher codes to disarm a missile while engaging enemy tanks and avoiding obstacles. The game is revered for its blend of real-time combat and puzzle-solving, a pioneering mix in the early '80s. Countermeasure stands firmly in the action-strategy genre, delivering an experience that tests both reflexes and intellect.