SEGASonic Bros. (found unreleased arcade puzzle game; 1993)

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SegaSonicBros Title 1080p.png

The title screen.

Status: Found

Date found: 04 Dec 2018

Found by: Guru & NeoHazard

SEGASonic Bros. was an arcade game that was never properly released. It was a puzzle game where Sonic is joined by red and yellow recolors of himself with differing personalities, the red one being cheerful, and the yellow one more brooding/shy. In the game, the player must stack Sonic's copies (multi-colored orbs) together to earn points, similar to Cleopatra Fortune.


The game was designed by Fukio Mitsuji and given a location test. It failed this test and was never released, possibly marked as one of two unsatisfactory Sonic arcade games in a press release. The game fell into obscurity for many years until Custom Robo's creator Kohji Kenjoh brought it up 20 years later, followed by a few Twitter posts on the game.


In February 2016, Arcade board collector ShouTime posted screenshots of a working board of SEGASonic Bros. to his Tumblr and Twitter, sparking a massive following in the gaming community. He also teased about dumping the game to the public, but it has yet to actually happen.

On July 26th, 2018, SegaBits (a well known SEGA news reporting website) announced that ShouTime would be providing the playable arcade board at the California Extreme event that will be available from July 28th to July 29th, 2018. Hence, it's possible the game resurface on the internet soon.

On October 23rd, 2018, a post was made on Arcade Fixer's Blogspot page about a Japanese collector who has several undumped Sega games, including SEGASonic Bros.[1] The Japanese collector, however, has denied the game being dumped onto MAME with one other game as well (that being Head-On Channel).

On November 26th, 2018, Arcade board dumper The Guru got his hands on the game and made an update about it, explaining how one of the game hoarders tried to scare him to not release the game.

On December 2nd, 2018, Guru released the SEGASonic Bros. ROM in response to the support for the game added by him on MAME getting removed and included the driver for it to recompile MAME with support for the game.


  • Unused sprites from the game's ROM release featured the members of Sonic's band cheering him on from their cage, a concept that was cut in the first game due to the Sega Genesis' memory constraints. The unused sprites featured an early version of Vector the Crocodile, who would later become an official character starting with the 1995 Sega 32X platform game Knuckles' Chaotix,[2]and became a mainstay of the Sonic the Hedgehog franchise.


Gameplay footage from California Extreme 2018.

Direct capture footage thanks to NeoHazard.

External Links