●Difficult thinking game made of ecological acacia wood from environmentally friendly plantations. ●Difficulty level 4 sur 5, 1 player, from 10 years ●Objective of the game: form 5 rows of 5 same coloured balls. ●Contents: 1 piece, illustrated rules and solutions in German ●Dimensions: 7.1 cm x 7.1 cm x 10.5 cm.