Welcome to the extraordinary, futuristic urban landscape that is The Last City. This parallel world is set in the universe of industrial steampunk and neon lights. High-rise buildings are built on a backdrop of pipelines, factories, and sharp bends, bearing witness to the frantic chase embarked by multiple speeding marbles. [90-minute Assembly] Each parts interlock with each otherwith the insertion design. [Marble Rolling with Dynamic Lighting] Touch the inductive switch to start, simultaneously controlling marble running with full power and lighting. [Electric Lift Module Elevate Marbles for Cyclical Running] The large-torque motor ensures high-efficiency output. Assembled size (approx.) : 5.7" x 3" x 9.1"