Sonic the Hedgehog 3 & Knuckles/Bugs

Level bugs

Flying Battery Music

In both Sonic 3C prototypes, the echo track of Flying Battery Zone's Act 1 music will go off sync after the first loop, and slowly gain drag behind the lead melody. The more times the song loops, the farther the echo track will be from the lead.

Fixed in final version

Flying Battery Boss

While playing as Knuckles, in Flying Battery Zone act 2, the boss is Robotnik instead of Egg Robo.

Not fixed in any version

Knuckles in Carnival Night

While playing as Knuckles, one can take Sonic's path in Carnival Night 2, then glide over the boss area revealing a load of junk.

Not fixed in any version

Knuckles Palette

Due to palette limitations, Knuckles' socks change colors; when you are playing as Knuckles, they are green. When you are playing as Sonic, Tails, or Sonic and Tails, they are yellow. Furthermore, as can be noted by entering Sky Sanctuary Zone act 1 as Knuckles through cheating, the two 'versions' of Knuckles have slightly different hues.

Not fixed in any version