Official Riot Documentation
Riot provides Official rules on their article : https://riftbound.leagueoflegends.com/en-us/news/rules-and-releases/gameplay-guide-core-rules/
- Core Rules Document (Updated 2025-06-02)
- FAQ (updated 2025-08-13)
Riot also provides Tournament rules on their other article : https://riftbound.leagueoflegends.com/en-us/news/organizedplay/riftbound-organized-play/
- Tournament Rules Document (updated 2025-07-24)