Block By Block expands your spatial problem-solving skills as you combine seven puzzle pieces to construct three-dimensional structures depicted on the 60 challenge cards. The puzzle pieces are the same as the famous Soma Cube of the 1970s. This logic gameis tough and very fun! Type:Brainteasers, Travel GamesSkill:Logic and Problem SolvingAge:8 and UpPlayers:1 PlayerFeatures: 60 Challenge Cards with Hints and Solutions 7 Puzzle Pieces Game-Go Bag