This article contains a list of glitches from Sonic Advance 3. Unless otherwise noted, all glitch names are conjectural. Many of them have not been confirmed by Sega.
List of glitches
As displayed on the right, it's possible for the leader to "sink" into the floor while using Tails' Tag Action. It is unknown what the exact conditions for this to happen are, but it is speculated by the user who recorded the glitch that it happens during specific frames of animation. This glitch can cause the player to fall off a ledge as shown close to the end of the video. This glitch is potentially lethal, particularly when trying to avoid death pits.
A normal reaction to most systems when handling too many objects is to drop the framerate without skipping. This slowdown, while mostly absent in this game, can be a useful exploit in most cases, although there are exceptions where it can hinder the player's progress and cost a few lives. A prime example is Chaos Angel Zone Act 3, where a badnik comes right before sideways spikes. If the player's partner and the badnik are on the same screen, the slowdown will prevent the player from avoiding the spikes ahead.
When playing as Tails with Sonic as the player's partner, if they charge their Tag Action, they must press jump, release jump, pause, release "R", and un-pause. Upon re-entry, the player will be fired much farther than normal.