Sonic the Hedgehog (1991) ::: 100% Walkthrough ::: LONGPLAY ᴴᴰ ::: Mega Drive

• Timestamps are listed above in chronological order, with levels/sections of the game ordered by initial appearance time, with the exception of bonus stages • Special Stages - in which Chaos Emeralds can be obtained - are listed separately, due to the possibility of players being able to access these from almost any level in the game