Unlike the standalone Sonic & Knuckles, the combined game includes a save system , which is essential given the game’s significant length (about 4 hours for a full run). Presentation and Sound
The standout feature is the physical , where you could plug the Sonic 3 cartridge directly into the top of the Sonic & Knuckles cartridge. Sonic and Knuckles & Sonic 3
The introduction of Fire, Water, and Lightning shields added new tactical layers, such as double-jumping or walking underwater. Unlike the standalone Sonic & Knuckles, the combined