What is debug mode sonic mania?

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Tags

1. #unlockable
2. #sonic
3. #before
4. #debug
5. #right
6. #extras
7. #where
8. #mania
9. #level
10. #weird
11. #reality
12. #beginning
13. #seriously
14. #become
15. #fantasies
16. #access
17. #every