The Yu-Gi-Oh! Supreme Darkness Booster Box contains 24 packs, with 9 cards per pack, and includes support for the "Evil HERO," "Speedroid," and "Crystron" strategies, plus a new World Premiere theme of "Continuous Trap Monsters". The set, released in early 2025, features 101 new cards and continues the 25th Anniversary Celebration with 25 Quarter Century Secret Rare cards, including a special unique one. 
What You Can Find in a Booster Box
Card Count: 24 booster packs per box, with 9 cards per pack. 
Rarity Distribution (per box): 10 Secret Rares, 14 Ultra Rares, 26 Super Rares, and 50 Commons. 
Special Rares: 25 Quarter Century Secret Rares, with one special card available only in this rarity. 
Key Themes & Mechanics
"Evil HERO" Monsters: 
New cards that expand the dark counterparts to the Elemental HEROes, including new Evil HERO and Supreme King versions of Neos. 
"Speedroid" Cards: 
Support for this strategy, with new Pendulum/Tuner Speedroid monsters and Synchro Monsters. 
"Crystron" Monsters: 
New support for the "Crystron" archetype, including a new Synchro Monster and a Level 2 Tuner. 
World Premiere Theme: 
A brand-new theme introducing "Continuous Trap Monsters" that can function as traps for buffs in the Spell/Trap Zone and then spring to life as monsters in the Monster Zone. 
Release Details 
Set Theme: Supreme Darkness.
Release Year: Early 2025.
Anniversary Tie-in: Features Quarter Century Secret Rares as part of the 25th Anniversary Celebration.