I like the concept of the seed walking around the different biomes, but I am wondering what the impact of your game is exactly and what your concept is trying to say about the theme. I think it relates to the theme, but what is the point your game is trying to make?

So far, I really like what you have with characters and background aesthetic as well as concept and impact, and how gameplay connects with the aim of the impact, but I noticed there's a lack of a target audience. Who is this supposed to appeal to? Also, since you're the sole dev of the game, it's good to make sure not to over-assign yourself with tasks, try to be realistic about what you can and can't do with your scope, and scope down if need be.