Ha fooled you all but seriously it's some type of augmented reality role-playing game set in the Witcher world. Sad news though it's a free-to-play game for iOS & Android.
Also you will notice it's another developer called Spokko.Foul creatures roam the Continent — it’s your job to become the monster slayer, track prey lurking nearby and take them down with your sword in augmented reality! We’re happy to announce a new free-to-play, augmented-reality, location-based RPG set in the Witcher universe, developed by Spokko, member of CD PROJEKT Family! The Witcher: Monster Slayer is coming to iOS and Android soon. About the game: The Witcher: Monster Slayer is a location-based augmented-reality RPG that challenges you to become a professional monster hunter. Venture out into the world around you and use your mobile device to track witcher-world monsters that roam close-by. Track these monsters and prepare for combat using time of day, weather conditions, and your witcher knowledge to gain an advantage on your quest to becoming an elite monster slayer.