Knuckles' Chaotix is a 1995 platform game developed by Sega for the 32X. A spin-off from the Sonic the Hedgehog series, it features Knuckles the Echidna and four other characters known as the Chaotix, who must prevent Doctor Robotnik and Metal Sonic from obtaining six magic rings and conquering a mysterious island. Gameplay is similar to previous Sonic games: players complete levels while collecting rings and defeating enemies. Knuckles' Chaotix introduces a partner system whereby the player is connected to another character via a tether; the tether behaves like a rubber band and must be used to maneuver the characters.