This looks and sounds amazing! The gameplay is adictive in a cathartic kind of way. I liked the metaphorical weight of a world that ages only as you move forward, grows when you interact with it and decays when you don't. It has some nice philosofical value on it that makes you reflect on the impact every being has on its enviroment, no matter how small it is. The music is amazing and I loved the walking animation of the little cube. Really cool job matcha!
My only issue was that I'm playing on a laptop and the canvas didn't scale properly to my screen size.