Tank Plus is an action game released for the Atari 2600, part of the Combat series, where players control tanks in a variety of maze-like environments. Its core gameplay involves maneuvering tanks around obstacles and firing at opponents. Each player aims to land hits on the opposing tank while dodging incoming fire. Players can compete against either the computer or a second player in a head-to-head battle. The game features multiple game modes, offering various terrain and gameplay challenges such as bouncing projectiles and invisible tanks, adding to the strategic depth and replayability.