3D Tic-Tac-Toe (Picture Label) for the Atari 2600 is a puzzle strategy game that expands the classic Tic-Tac-Toe formula into a three-dimensional space. Developed and published by Atari, Inc., the game challenges players to align four of their markers either vertically, horizontally, or diagonally on a 4x4x4 grid. The Picture Label version features a distinct label artwork on the cartridge, showcasing the game's 3D concept. Offering single-player against AI and two-player modes, the game increases the complexity and strategic depth, making for a more engaging experience than its 2D counterpart.