It’s not actually a game, it’s a video Quinns made for an Art Exhibition about a game which doesn’t exist, it was just for the exhibition.
The game looks SO GOOD though, a lot of people asked the creators to make it happen!
They have a youtube channel which had a new video on it 2 months ago claiming to be an internal playtest, but checking today their website is down so I don’t know if a physical version of the game is likely now.