Hot Wheels Mariokart Thwomp ruins Track SetHot Wheels Mariokart Thwomp ruins Track Set Officially Licensed by Mattel The Piranha Plant Slide play set comes with a Luigi die cast kart the Thwomp Ruins set includes a Mario die cast kart and the Chain Chomp Challenge includes a Donkey Kong die cast kart and Boo's Spooky Sprint Track includes a haunting enemy Boo! Kids ages 3 and older can race friends just like in the video game with their favorite characters to overcome challenges and rev their