This story focuses on Sonic 2, but there are other stories out there. People are still looking for secrets in Shadow of the Colossus.
In 2nd grade there was a boy in my class who told me there was a boxing level in DuckTales for the NES.
Other video game rumors I remember:
- That a rainbow net would catch you if you jumped over the end-level flagpole in Super Mario Bros
- Nobody could beat Mike Tyson
There was a super secret blood code for Mortal Kombat on the Super Nintendo