Mastermind is a fabulous game of logic, and I adore it. I took off one star for this game set, because the peg compartment has two spaces, one for the guess pegs, and one for the answer pegs, with a short divider. If you put the pegs in the compartment in their areas, the lid won't close. We found if we just scooped some guess pegs over the divider into the answer pegs compartment, the lid would close, but it defeats the purpose of a separator slightly. Otherwise, I really like the nice, rounded shape of the game board.