Sonic the Hedgehog 3 Limited Edition was going to be a compilation of Sonic the Hedgehog 3 and Sonic & Knuckles for the Sega Mega Drive. This would be similar to what happens when locking the two games together with Sonic & Knuckles' Lock-On Technology. It would essentially be Sonic the Hedgehog 3 & Knuckles, but it would have been contained in a single cartridge and thus probably would have had a cheaper price. It is unknown whether it would have had a port allowing for Lock-On Technology so compatibility with other cartridges is also unknown.