OH yes, the ultimate wombo combo cartridge. That thing was huge, this is pretty much the best 2D Sonic game BUT its not the kind of game you try and finish in one sitting, its too long for that and when you game starts to be too long, the flaws start to show up... looking at you goddang cylinder on the amusement park (these days everyone knows the trick but back then.... oh boy... its the reason i finished this game first with knuckles instead of sonic) and on the sonic & knuckles side that pyramid levels are a real chore to go through. Don't get me wrong though, the game is a masterpiece and the OST is godlike, this was created using sonic 2 as a foundation and phew, they did a amazing job building upon it.