Despite having very similar levels and gameplay as Sonic the Hedgehog 2, it contains arrangements of music from Sonic the Hedgehog 3 & Knuckles. Sonic the Hedgehog: Pocket Adventure was developed by Dimps and Sonic Team, and published by SNK and Sega. It was the second Sonic game to be released on a console not developed by Sega (the first being Sonic Jam for the ). It was released on Decemin North America, and on Januin Japan. Sonic the Hedgehog: Pocket Adventure is the only Sonic the Hedgehog game released for the Neo Geo Pocket Color. This is, in fact, Knuckles' route, as can be revealed with Debug Mode.Overview Sonic the Hedgehog: Pocket Adventure

There is also a notable cylinder at the beginning of Act 1, which cannot be moved any further down than its own height, even though there appears to be another passage beneath it. This frustrated many players who didn't figure out the technique at first. It is massively difficult to get by like this, so it is much preferable to use the up and down method. While it appears to be a traditional jumping puzzle, it is not meant to be bypassed this way. This area is unavoidable the player will encounter this no matter which route is taken. Halfway through Act 2, there is an infamous area where Sonic is trapped in a vertical shaft, and must push one of these cylinders down a slot low enough for him to escape through. One element of the stage is a series of hovering, rotating cylinders, which either move in a set pattern by themselves or can be moved up and down manually by pressing up and down on the D-Pad, though this is not obvious. 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).

Sonic casino zones