Sonic 3 and Knuckles: Difference between revisions

* [[Underwater Boss Battle]]: The Hydrocity Zone

* [[Underwater Ruins]]: Hydrocity Zone again.

** Angel Island, Standalone Sonic 3 only: During Act 2, enter and exit a bonus stage or special stage to remove the boundary preventing Sonic from returning to Act 1. Once back in Act 1, stand on top of the left-pointing wall-spikes under the crumbling cliff, face left and look up. While the screen is scrolled up, have Tails air-lift Sonic until the spikes are just out of sight. Let Tails descend with Sonic in tow, and he will be hurt and fall into the wall. When Tails returns, have him lift Sonic up to just below the slope above. Hop off to the right and walk over an invisible floor under the slope; he will fall through an invisible shaft, and land in Knuckles' boss area. Start to play Knuckles' Act 2 as normal, hitting the checkpoint under the breakable floor. Unfortunately, the lower boundary is locked too high, and trying to progress causes Sonic to die as though he fell into a bottomless pit. When Sonic respawns at the last checkpoint, the breakable floor returns, and he cannot escape from Knuckles' Act 2.

* [[Unwinnable By Mistake]]: When playing as Sonic with Tails tagging along, it's possible to glitch Tails off-screen so he doesn't return. Doing so in Marble Garden Zone makes it impossible to fight the boss.