Every Fortress tankard hides a secret. Etched into the base is a unique QR code that opens the door to The Undercroft: Fortress's gamified loot-drop experience built right into your drinkware. Scan to play and unlock instant in-venue rewards, collectible badges, and entries into bigger prize draws, with new loot drops waiting every time you come back.

Keep your eyes open around the tavern too, hidden QR markers are scattered near the bar, gaming stations, and on event nights at Fortress Melbourne and Sydney, rewarding anyone curious enough to go looking. It's not just a tankard, it's your key into the dungeon beneath Fortress.