Does the 40 card deck restriction apply to best-of-1 format in Riftbound?

Ruling: The 40 card deck restriction applies to all OPL (organized play level) games regardless of mode of play. The mode (bo1, bo3, 1v1v1, etc.) is separate from the OPL level.

Nuances:

• You can play high OPL bo1 or casual bo3
• Any OPL level game requires 40 cards, regardless of whether it's bo1 or bo3
• Casual play may have different requirements than competitive/OPL play