The D-Struct Machine is still fought at the end of Act 1. In this case, each act takes roughly just one-and-a-half minutes to complete and there is not even a boss fight at the end of the Zone. Playing as Sonic and/or Tails, Carnival Night Zone is one of the longest Zones available in the game, but as Knuckles in Sonic 3 & Knuckles, it changes from being one of the longest Zones to one of the shortest. Coincidentally, Casino Night Zone is also the fourth zone in Sonic the Hedgehog 2. 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.
It is very similar to Casino Night Zone from Sonic the Hedgehog 2, but with a carnival theme. Carnival Night Zone is the fourth Zone in Sonic the Hedgehog 3 (or Sonic the Hedgehog 3 & Knuckles).
