In 1994, Sega released Sonic & Knuckles with a unique "Lock-On" cartridge. By physically plugging the Sonic 3 cartridge into the top of Sonic & Knuckles , players merged the two games into one massive adventure.
If you're looking to post or share a game file like "sonicknuckleswsonic3bin", which seems to be related to a modification or hack of Sonic 3 & Knuckles, here are some general guidelines: sonicknuckleswsonic3bin game file
Installing Sonic 3 A.I.R. on Multiple Platforms | PDF - Scribd In 1994, Sega released Sonic & Knuckles with
This is often an emulator region mismatch. The original Sonic 3 had different music tracks depending on the region (the "MJ tracks" vs. the PC replacement tracks). Fix: Set your emulator to "Auto-detect region" or explicitly to "USA/Japan (NTSC)." Avoid PAL modes. on Multiple Platforms | PDF - Scribd This
: This version allows you to play through all stages as Sonic, Tails, or Knuckles, and includes the exclusive ability to collect Super Emeralds to become Hyper forms of the characters. The .bin File and Modern Gaming
In the original 1994 hardware release, Sonic & Knuckles featured a "Lock-On" cartridge technology that allowed players to physically plug Sonic 3 into the top of it. This combined the two titles into the complete vision of Sonic 3 & Knuckles .