Carnival Night Zone is the fourth Zone in Sonic the Hedgehog 3 (or Sonic the Hedgehog 3 & Knuckles). It is very similar to Casino Night Zone from Sonic the Hedgehog 2, but with a carnival theme. The Zone is a playful carnival filled with balloons, pinball bumpers and cannons to launch from, although unlike Casino Night Zone, there are no slot machines. Coincidentally, Casino Night Zone is also the fourth zone in Sonic the Hedgehog 2.