Zig & Go Roll Chain Reaction Construction SetA wooden building game of chain reactions requiring careful thinking. Children copy the 3 designs in the instructions booklet to build courses, or make up their own the possibilities are endless! This game is designed for ages 7 and over, and all the kits in the collection are compatible, for ever more inventive action reaction courses. Construction game: children will need to use skills to position the pieces to make a course. Chain reaction game: