Starting at the Plein, the grand square in the heart of The Hague, you'll open the Explorial app, enter the 6-digit game code that you received by text and Viator chat message, and set off past the statesmen's statues. The tour is fully self-guided — no guide, no fixed start time, just your group and the city. The Binnenhof opens the game: the medieval castle courtyard where Dutch politics has played out for 800 years. Riddles circle the Ridderzaal and its Gothic towers. Noordeinde Palace follows — the King's working palace, guarded by a golden coach legend or two. Trivia peeks behind the royal railings. Then the Lange Voorhout spreads out its double rows of lime trees, ringed by embassies and grand mansions, with clues hiding among them. Around two hours covers the route at a stately pace. When the final answer lands, the leaderboard delivers its royal verdict.