Ravensburger's Gravitrax Starter Set is all you need to get started building these futuristic marble runs. With as many setups as you can dream up, Gravitrax is a great toy for creative expression and teaching STEM skills! Kids and adults can use the accompanying app to plan out their more ambitious builds, or follow included instructions. See how many divergent routes you can add, or time multiple paths to see which is fastest! Includes: 4 base plates, 2 transparent levels, 6 balls, 40 large height tiles, 12 small height tiles, 21 curves, 3 junctions, 2 switches, 1 3-in-1 block, 1 vortex, 1 launch pad, 1 magnetic cannon, 3 long tracks, 6 medium tracks, 9 short tracks, 1 finish line, 4 basic tiles, inserts for basic tiles: 2 catchers, 1 freefall, 1 splash, 1 landing, instructions, construction plan booklet, and task booklet. Ages 8 & up. Made in the Czech Republic. Warning: small parts, not for children under 3 years.