How to use: First, take out the 1:64 scale HW 5 - Alarm included in the set. Use the catapult to launch it through the pretend flames towards the smash spot to try and put out the fire. You can place the crushable car in the grandstands for more exciting destruction. You can also connect this set to other Hot Wheels Monster Trucks Arena Smashers sets to build a bigger arena. Attention: Make sure to play on a flat surface to avoid the base from tipping over during the moving and shaking. Keep small parts away from children under 3 to prevent choking hazards. Maintenance: Wipe the set with a dry cloth regularly to keep it clean. Don't use harsh chemicals as they may damage the colors and decorations.