This article contains a list of glitches from the 2013 remaster of Sonic the Hedgehog 2. Unless otherwise noted, all glitch names are conjectural. Many of them have not been confirmed by Sega.
List of glitches[]
Tails Glitch[]
To perform this glitch, the player should use the Level Select code and activate Debug Mode. After turning on Debug Mode they must select 00 3 times, then make a new save file with Sonic and Tails. In Emerald Hill Zone Act 1, they must die by using spikes 2 times. Next, the player must turn into an item using Debug Mode, and die by falling out of the world. When the player returns to the save select screen, they need to make a Sonic only save file. The player should now have Tails join Sonic when he is not supposed to. (WARNING: Completing a level will cause the player to be stuck with Tails!)
Palette glitch in Sonic 2[]
To perform this glitch, the player needs to enter Debug Mode and select Oil Ocean Act 2 as Sonic and Tails. Once there, they should go to the checkpoint directly before the boss fight and become Super Sonic with an S Monitor. The player then needs to place a Teleportation Monitor and smash it.
The player will now be transported back to the beginning of the level, and Tails should have invincibility stars around him. If the player looks, they will see that the background is glitched out. If the player uses Debug Mode to travel all the way to the top of the zone, they will see that the background loops. The same can be seen at the bottom.
Sonic Cannon[]
In Oil Ocean Zone, the player should run quickly toward a cannon (on the ground). If they jump at the right angle, they can get stuck inside the cannon.
Frozen Fire Top[]
In Oil Ocean Zone with Debug Mode activated, the player should place one of the unused pushable balls onto a Fire Top underneath a secret purple cannon. Once the Fire Top launches, the ball will cause the Fire Top to stay attached to the purple cannon.
Jumpscene[]
In any special stage, performing a jump at the right time before the button icons disappear to show the Chaos Emerald will cause Sonic to jump constantly while collecting it.
Floating in Air[]
In Oil Ocean Zone Act 1, if the player takes an oil slide which has a ramp at the end of it, they will often end up floating in the air while moving up at 1 pixel every second. The only way to fix this is to jump. For whatever reason, this does not occur in Act 2.
Friends earn your achievements[]
In 2-player mode, whenever the player's opponent gets an achievement, the player will get it as well.
Triangle trap[]
At some points, player can be suck in Triangle Bumper, with no way to get out, unless if player resets. The sound effect is also will be glitched.