Underground Brain Train Toys_Build & Create With its unique magnifying effect

With its unique magnifying effect

Contains 9 pieces with a cotton bag

When solved

and the non-toxic colours wash off effortlessly

Underground Brain Train Toys_Build & Create With its unique magnifying effectAll aboard the worlds first mathematical London Underground railway! Underground Brain Train is where logic meets locomotion. Designed as a puzzle game with a difference, this engaging set challenges players to construct accurate railways by solving clever maths based puzzles. With 12 track pieces and 40 multi level challenges to tackle, players must use their numeracy and deduction skills to piece together the correct railway configuration. And once