Sonic & Knuckles

Sonic & Knuckles
Developer	Sega Technical Institute
Publisher	Sega Tec Toy (Mega Drive in Brazil)
Platforms	Game Boy Advance, GameCube, Genesis, Linux, macOS, Nintendo DS, Nintendo 3DS, PlayStation 2, PlayStation 3, Saturn, Wii, Windows, Xbox, Xbox 360
Released	Genesis/Mega Drive EU/NA: October 18, 1994 JP: October 28, 1994 Brazil: 19xx Saturn JP: 20 June 1997 NA: 22 August 1997 EU: 28 August 1997 GameCube NA: November 10, 2002 JP: December 18, 2002 EU: March 7, 2003 PlayStation 2, Xbox NA: November 2, 2004 JP: December 9, 2004 EU: February 4, 2005 Windows EU: March 31, 2006 NA: March 9, 2007 WW: October 26, 2010 Wii September 2007 Xbox 360 WW: June 10, 2009 Nintendo DS NA: March 2, 2010 AU: March 11, 2010 EU: March 12, 2010 PlayStation 3 NA: April 19, 2011 EU/AU: April 20, 2011 JP: July 28, 2011 Nintendo 3DS JP: September 22, 2015 WW: October 8, 2015 Linux, macOS Ww: May 29, 2018
Added to Museum	Genesis: December 25, 1994 Windows: March 11, 2016 Linux macOS: December 21, 2018

Sonic & Knuckles is the fourth 16-bit game in the Sonic the Hedgehog series, and the sixth overall.

It has a pass-through slot on the top of the cartridge, dubbed "Lock-on technology", that can add Knuckles as a playable character in Sonic the Hedgehog 2, and when it is combined with Sonic the Hedgehog 3 it will become Sonic 3 & Knuckles. The latter allows the play of Knuckles in Sonic the Hedgehog 3 and as Tails in Sonic & Knuckles. If it is combined with Sonic the Hedgehog, it will simply play the Blue Sphere bonus game.

Versions

Sonic & Knuckles was originally released for the Sega Genesis in 1994. It was released in the Sonic Jam compilation for Saturn in 1997, in Sonic Mega Collection for GameCube in 2002, in Sonic Mega Collection Plus for PlayStation 2 and Xbox in 2004 and for Windows in 2006. It was then released for Wii Virtual Console and Xbox 360 in 2007, in Sonic Classic Collection for Nintendo DS in 2010, for PlayStation 3 in 2011, and for Nintendo 3DS in 2015.