WBGT Chart Het Geheim Van San Marco Escape Room Spellen Nl. The Secret of San Marco is a home escape game for single and multiplayer players, set in Venice. Players must solve riddles to find a hidden ancient document that holds the key to a secret in the San Marco district. Designed as a replayable version, the game comes in a small, handy box, perfect for vacations or cozy evenings at home. The game materials are not destroyed.