Yu-Gi-Oh! Duel Monsters S01 E199 Tomb of the Nameless Pharaoh

"It's time to duel!"

Grandpa found the Millennium Puzzle decades ago, but little is known about the terrors, traps, turmoil and treachery he faced to find the ancient artifact! See how it all began as we learn how Grandpa unearthed the Millennium Puzzle – for without his discovery, Yugi would never have solved the Millennium Puzzle forty years later!