Knuckles' Chaotix · Sega Genesis · Build: April 1994 · Discovered: 1995 · MORGOTH / Evil Empire BBS
A 1994 Genesis prototype starring Sonic and Tails linked by an elastic energy tether — the experimental seed that grew into the 32X game Knuckles’ Chaotix.
Sonic Crackers is an early prototype, its title screen dated 1 April 1994, in which Sonic and Tails are joined by a stretchy band of energy that behaves like a rubber tether — the pair must be flung and swung around each other to move, a mechanic likely inspired by "clackers," the toy of two balls on a string. Because of the April Fools’ date, many initially dismissed the ROM as a hoax when it was posted to the Evil Empire BBS in Belgium by a user called MORGOTH on 15 June 1995, making it one of the first substantial game prototypes ever shared online. Its authenticity was later confirmed by internal Sega design documents and by text found in a Knuckles’ Chaotix prototype. By December 1994 Sonic and Tails had been swapped out for Knuckles, and the concept — tether physics, level design, and some music — became the Sega 32X launch title Knuckles’ Chaotix in 1995.
Sonic Crackers is a rare case of being able to watch a game change species in real time. What began as a Genesis experiment with two tethered hedgehogs was, within months, reworked around Knuckles the Echidna — freshly introduced in Sonic 3 — and moved onto Sega’s 32X add-on as Knuckles’ Chaotix. The distinctive tether mechanic, awkward but memorable, survived the transition largely intact and remains the defining feature of the final game.
Its early leak also makes it a landmark in preservation history. Circulating on a European BBS in 1995, well before ROM archiving was organised or commonplace, Sonic Crackers showed that curious players would seek out and share unfinished builds. The skepticism it initially met — dismissed as an April Fools’ joke — is itself a reminder of how little was understood about prototypes before communities like Hidden Palace and TCRF formalised their study.