Sonic & Knuckles Cheats

To play the bonus rounds at any time, insert any game into your Sonic

This isnt really a cheat... secrets in zones. Im not sure if you already now these, but check em out if you dont.

In Sandopolis Zone Act 2, play as Knuckles and climb up on the wall on the left at the side to access an upper path.

In Lava Reef Act 2 (by far my favorite zone), get to the section where theres a giant slide that sends you down below. Slide down, but don\'t keep going towards the right! Run back to the left, jump over the gap and the spikes to get a Ring and a Lightnin