Sonic The Hedgehog 3 (Sega Megadrive) bug.
Windows XP Binary / 32-Bit.
This is difficult to explain but here goes...
No water / invisible water in Angel Island, Act 2:
Start Angel Island: Act 2, contine right as normal and head down to the bottom of the stage. You will hear a splashing sound, and see a water splash effect as you jump, but the water itself is totally invisible.
If you are playing as Tails, it looks funny as he is swimming through thin air!
*No cheats, codes or saves were used whilst playing. Game was started from a new 1 player game slot, playing as Sonic & Tails together.
Sorry i can't even post screenshots but i am away from my PC.