Kids Education Brain Toy Night City 3D Puzzle Marble Maze Run DIY Assembly Ages 14+Educational 3D marble action DIY puzzle maze: assemble it piece by piece, no glue or tools needed Like a pinball machine but in 3D a unique cyberpunk city marble maze with acrylic transparent hollow guardrails to leave you in wonder. Turn the mechanical crank wheel and watch the brain teasing infinite cycle action! Educational collectible that promotes hands on creativity a knock out conversation starter. No glue needed 294pcs plywood self assembly