How to use: First, open the carry case. Then turn the cog to reveal the car - loading magazine. Load up to 15 cars into the magazine. Press the button on the playset to launch the cars one after another. If you have extruded track, connect it to the playset for more play options. Attention: Keep small parts away from children under 3 years old to avoid choking hazards. Do not use the playset near water or in wet conditions. Maintenance: Wipe the playset and cars with a dry cloth regularly to keep them clean. If there are any stubborn stains, you can use a mild soap solution. Store the playset and cars in a dry and cool place when not in use.