OCTAGONOS is a non-profit riddle/webpuzzle. Any usage of copyrighted music falls under fair use.
1. Please refrain from cheating - it ruins the fun.
1a. Using Riddler should also be shunned - While this isn't considered cheating, it is supporting a bad person.
2. Most, if not all hints are included in the "Source Code", and is accessible by pressing CTRL+U on your keyboard, or adding "view-source:" at the beginning of the URL if you're on mobile.
e.g.: view-source:https://spark-0f-hallways.neocities.org/octagonos/beforewebegin
3. You will need to: Change URLs and file names (like "single.png" to "double.png"), view the Source Code often [check #2], do research via Google [or some other search engine], and use your intuition.
4. If this is your first time playing a riddle, I recommended having a teammate to play this riddle with.
When you're done reading, translate the following into English and replace "beforewebegin" with it: