

Uncover the fate of the lost Amber Room, hidden in Königsberg Castle during WWII. Decode clues across historic landmarks to expose the royal secret before it vanishes forever.

Uncover Immanuel Kant's final cryptic precept hidden in Königsberg's ruins. Decode clues across preserved landmarks to reveal a secret that shaped the city's enigmatic destiny from Prussian glory to Soviet shadow.
The Explorer Pass is valid for 12 months from the date of purchase. The City Pass has no expiration date.
Each code is linked to a phone. If you play with multiple people on the same phone, one code is enough.
After purchase, you immediately receive your codes by email. Activate them one by one whenever you want.