SIGIL is a location-based augmented reality (AR) mobile game that transforms the world into a massive sandbox RPG, where fables come alive. In SIGIL a user’s location becomes meaningfully incorporated into the game narrative. The system takes into account location-specific data, such as: terrain, nearby venues, the time of day, the weather and moon phases, and uses this information to generate encounters in the player’s vicinity. Also, SIGIL has plenty of Gourdons.