The main game is divided into five attractions, each one consisting of five different levels.
The stages are set in different times of day (morning, day, evening, night), which is determined by how long you stay in the previous stage (if there was no change, then next time there will definitely be a change). The most fundamental change in Knuckles' Chaotix is the special ring force bond between characters.
There are also strong connections with Sonic the Hedgehog CD, with many of Chaotix's staff having worked on that game.
Due to the unpopularity of the 32X, Chaotix sold far fewer units in comparison to many of the Mega Drive Sonic games.
A number of prototypes have been released onto the internet, the earlier ones giving "Wechnia" a Tails-like flying move.
Amy Rose was also discovered in the game's code by ICEknight, not as a playable character, but as part of a sound test cameo (later re-implemented by Esrael).On a side note, all of the badniks and almost all of the bosses in the game use gray, power sapped rings to function rather than animals.However, the rings cannot be collected like regular rings, as they dissolve not long after falling out of their badnik/boss machine.According the game's Japanese manual, a mysterious island rose from the sea shortly after the events of Sonic & Knuckles.Doctor Eggman discovered the island, and found a mysterious ring inscribed with descriptions of the Chaos Rings, ancient Rings infused with Chaos Emerald energy.Knuckles, curious about the strange island, goes there as well, and manages to rescue Espio.The two then go on to stop Eggman from getting the Chaos Rings.In Chaotix, however, both players are at all times connected on one single screen while neither player acts as the dominant force to move the game forward.Besides the staple of traditional Sonic moves and individual abilities this means some new tricks can be executed with the elastic force of the ring bond.Additionally, players can toss each other toward platforms or use the 'recall' button to reunite (at a cost of ten rings, even going into a negative count if necessary). If an AI character is hit, only one ring is lost; if a human player's character is hit, behavior depends on whether or not he has picked up a Combine Ring (blue ring monitor).If the player has a Combine Ring, the lost rings will come out as one big ring, giving him ten seconds to get that ring and reclaim all your rings before it breaks apart.