Right now on Amazon you can buy a K’NEX Nintendo Mario and Diddy Kongs Fire Challenge Building Set for $21.99 down from $64.99. Keep in mind that prices on Amazon can change at any time.
- Build Mario and Diddy Kong in their Standard Karts
- Swinging Fireballs obstacle
- Spinning Fire Cogs obstacle
- 2 Super-fast, battery-powered motors for karts
- 2 collectible items: star and spiked blue shell