Sonic the Hedgehog 2 (8-bit)/Glitches

This article contains a list of glitches from Sonic the Hedgehog 2 (8-bit). Unless otherwise noted, all glitch names are conjectural. Many of them have not been confirmed by Sega.

List of glitches
This glitch could happen on any zones and acts that has invincibility monitors, most notably Sky High Zone. If the player gets an invincibility and make it into the end of the level, hit the signpost in correct time so that the invincibility runs out immediately just after the end level music begins.
 * End level music glitch:

In the first act of Sky High Zone, there is a hill with Hang Glider placed at the end of it. If the player destroy the invincibility monitor right before using the glide, the player could slide down into mid-air faster. Once at the bottom of the screen, player will notice that Sonic does not die even when the invincibility runs out. If player moves to a solid platform and then goes back to the mentioned invisible platform, Sonic will eventually die.
 * Invisible platform on Sky High Zone:

Right in the beginning of the Act 2 of Sky High Zone, there is two springs, one is pointing to opposite way of the level and two is pointing to the correct way of the level. The player had to run off and then do a spin attack and destroy a 1-up monitor, and the springs will ricochet. After that, the 1-up monitor will respawn again.
 * Infinite lives:

This happens because Sonic were jumping across the screen so fast that the game did not have time to reload the power up data. Repeatedly doing this will cause player to have infinite amount of lives and sometimes glitching the level itself.

In the first act of Green Hill Zone, there is a common glitch on loop. Gravity did not exists when the player moves Sonic into the middle of the loop. This means player could poke a little fun to Sonic by making Sonic looks like he is dancing.
 * Green Hills Zone loop physics:

In the middle of Gimmick Mt. Zone Act 1, there is a minecart facing the opposite way of the act. When player rides on it, it will slide down the ramp like a regular minecart. Usually minecarts will jump off the ramp when it reaches the bottom. However, this one minecart is a different. Once it reaches the bottom of the ramp, it will stuck immediately.
 * Minecart stuck in Gimmick Mountain Zone:

When the player reaches the final boss, player would eventually fight Robotnik in his dome. However, if the player attacks Robotnik before even the screen scrolls at the end of the stage, he wouldn't affected by player's attack and after that the player could die very easily from lightning attacks from Robotnik.
 * Final Boss First Hit Glitch: