Double Decker

The game includes a playing board with a 3x3 grid and 12 playing pieces. Each piece consists of two cubes, each with marbles in the center - one red, one green. Players take turns placing pieces on the board, trying to make a specified pattern in his color but not his opponent's -- all the while having to play both his color and his opponent's color each turn. There are several different games explained in the rules: make 3, 4, or 5 in a row (in 3D) before your opponent, form a square in your color, form more three-in-a-row alignments than your opponent, etc.

Eight games are:
Game 1: 3D tic Tac Toe or 2 in a Box
Game 2: Move 3 in a Row
Game 3: 3D Four Square
Game 4: "3D tic Tac Toe or 4 in a Row
Game 5: Variation on "3D tic Tac Toe or 4 in a Row"
Game 6: Binary Doodle
Game 7: 4-Square on the Level
Game 8: Recluse Puzzle