The Marble Solitaire Board Game is a classic one-player game featuring a sleek black stone game board with 33 glass swirl marbles. This game is perfect for those looking for a simple and strategic challenge to enjoy on their own. With the objective of strategically arranging the marbles in the correct sequence, players must use their critical thinking skills to outsmart the game. Whether you're a veteran of solitaire games or looking to try something new, this contemporary manufactured board game is sure to provide hours of entertainment.  Game only 8 inches.  Marbles are not perfectly round.  Please see pics.