Bugs:Sonic 3 & Knuckles
This page details bugs of Sonic 3 & Knuckles.
Endless Spin Dash
This glitch can only be done in Sandopolis Zone and Carnival Night Zone.
When the player is performing a Spin Dash charge on a breakaway platform, they may fall into the sand. When the player manages to get on land, the character will automatically spin dash and will continue doing so for some time. In Carnival Night, the player has to perform a spin dash on the ledge next to a spinning barrel. If the barrel comes to the player while charging the spindash, the dust will stay behind the character and the same thing from Sandopolis will occur.
Four-Tailed Tails
At the end of Launch Base Zone Act 2, the player automatically turns to face the Death Egg, which is falling in the background. Tails' tails aren't hidden as his animation changes from looking up to the standing rotation, resulting in him having an extra set of tails for the duration of the sequence.
Sonic & Knuckles
Go to a level (excluding The Doomsday Zone) with Debug Mode enabled, then place a large number of S Monitors down. Roll into the lot of them to enter Super form while gaining a large number of rings. If done enough, one of three things will occur; From most common to rarest, the game will freak out and eventually crash, the controls will become locked, or the controls won't be locked. At this point, press Start and the game will reset in Sonic & Knuckles mode. Interestingly, this enables debug mode for Sonic & Knuckles, which isn't possible normally.
Blue Knuckles
In Hidden Palace Zone (with at least one Super Emerald special stage unlocked), use Debug Mode to bypass the Knuckles miniboss and enter a special stage. Once exited, the player will enter a glitched Angel Island Act 1, spwaning at the top-left corner, with the water level lowering from the top of the screen. Attempting to go beneath the water as it's lowering, using Debug, will crash the game. At this point, reset the game and go to the Level Select. The character ID, if successfully pulled off, will now say "80". Select any level and the player will be playing as Blue Knuckles. He plays like regular Knuckles, but has Sonic's gameplay attributes and spawn locations, making some levels like Angel Island impossible to complete.
