I have never seen or played a game like this before where the world is constantly resetting, changing, evolving even.
I didn't really understand how to play at first, but once I did I was collecting every tree, rock, and snowball I could find. trading with snowmen and collecting chests, and turning as much of the world as possible into space. The game is extremely addictive and I had to keep playing until I got to the bed at the end.
My only critiques is I don't really understand how this uses the theme, and an inventory that show how much of each material I have would be helpful. However, the game itself is really fun and you should all be proud of what you made.