And it comes from development studio Spokko, a "member of the CD PROJEKT Family". As per the headline The Witcher: Monster Slayer is a location-based mobile jam that uses augmented reality to let players hunt down monsters in the real-world.

Taking place before the events of The Witcher games, and hey that means we're living in a pre-Geralt timeline, it's set to offer first-person AR combat. As seen in the following trailer.

Monster Slayer lets players explore the world around them while tracking, studying, and fighting monsters both new and familiar, using time of day and real-life weather conditions to gain the upper hand. Preparation is key in order to defeat tougher enemies, as players will need to brew powerful potions and oils, craft bombs and monster bait, and upgrade their character before putting these beasts to the sword and signs in first-person AR combat. In addition to battling monsters lurking close-by, the game also contains rich, story-driven quests inspired by other games from the series, taking players on full-fledged adventures that thrust them into the heart of what it means to be a professional monster slayer.

Okay, so it looks a little different to Pokemon GO in that you're defeating monsters and not capturing them like a maniac -- but in using the real-world it follows suit by turning your surroundings into a playground. Albeit one filled with the sort of nasties found throughout The Witcher. No word on a release date, that's set to be announced later this year, but The Witcher: Monster Slayer is being developed for iOS and Android.