Abstract: The present disclosure is directed to apparatus, systems, and methods to allow a user to create virtual and real-world game content to provide players with physically engaging virtual content that is anchored to real-world locations. A content creator is provided a set of “drag-n-drop” modular assets (e.g., encounter tiles, content tiles, creatures, chests, rooms, vehicles, etc.) that can be aggregated together to form a complete content set (e.g., a dungeon, level, puzzle, etc.) through which a player is able to engage the game via the real-world. Each individual modular asset may include a set of in-game challenge criteria that must be satisfied to complete an in-game challenge associated with the asset.