When you start a new game, highlight an empty save file and use "up" and "down" to cycle through the various characters. You should be able to choose from Sonic & Tails, just Sonic, just Tails, or Knuckles.
To my knowledge there isn't a way to change characters midway through a savegame because of the different stage layout and level order that Knuckles has compared to the other character options (E.g, levels that require climbing, or levels that do not require a high jump). It might be possible using a cheat system like AR or GameShark, but because of the aforementioned differences, it might hinder your game progression, or at worst, glitch your game.
Yes except in sonic 3 and knuckles, you can be knuckles. :)
You can play Sonic 3, or Sonic & Knuckles but unfortunately you cant play Sonic 3 & Knuckles on Sonic's Ultimate Genesis Collection.
Yes,but on the sonic & knuckles side,not sonic 3 side
Not on it's own, no. You can lock Sonic 3 onto Sonic and Knuckles and play as Knuckles through both games, though.
Years, you can. I own Sonic Classic Collection and my favorite game in it is Sonic 3 and Knuckles
You don't. You need sonic 3 & knuckles to play as Knuckles.
play sonic 3 once and sonic and knuckles twice
Yes, it does! if you put Sonic 1 on it, it comes up with Blue Sphere the special stage in sonic and knuckles, If sonic 2 is in it, you can play as Knuckles in sonic 2 and reach places you couldn't with sonic!, but if you put sonic 3 in it it plays Sonic 3 and Knuckles and play sonic 3 as knuckles, acsess cheat code, but the final boss of sonic 3 is disabled as knux and Sonic 4 don't work cos that's for PS3 and Xbox 360 and wii
"Knuckles Chaotix". Even though "Sonic 3" and "Sonic and Knuckles" were two separate games for the Sega Genesis, but the were both in the same story line. It started in "Sonic 3" and then continued in "Sonic and Knuckles". Knuckles Chaotix for the 32x, is his second game.
sonic 1, sonic 2, sonic 3, sonic and knuckles, blue sphere, knuckles in sonic 2, sonic 3 and knuckles, sonic 3d blast, sonic spinball, dr. robotnik's mean bean machine, flicky, and ristar.
You can play them in the Sonic Mega Collection Games, but not in Sonic Gems:i can go super sonic says:but you need to unlock sonic 3 and knuckles that's what i had to do!
knuckles in sonic two, blue sphere, sonic 3 and knuckles, flickey and ristar.