

Decipher the hidden conspiracy that nearly toppled the Romanov dynasty. Uncover why Ivan Susanin's sacrifice in 1613 was far more than a peasant's patriotism—it was a calculated plot to save Tsar Michael I from Polish assassins.

Uncover the hidden oath sworn by young Tsar Michael Romanov at Ipatiev Monastery. Decode clues across Kostroma's landmarks to expose a 17th-century conspiracy that nearly toppled the dynasty before it began.
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.