Amazing concept. I just finished watching alphabeta gamer play this and I really like the idea and the style is cute. If I was going to give any critisism it'd be the text at the beginning. I'm going to copy and paste a comment I left on the video:
Considering the game tells you about its mechanics in the opening title I think it'd be a lot more satisfying to let the player use that knowledge to naturally figure out what to do instead of dialogue that tells us nothing we couldn't figure out by experimenting. It's not that complicated and trail and error is better than having to skip over like ten bits of dialogue muttering 'yeah I get it'
But above all I'd love to see this made into a full game. The potential for interesting mechanics is very interesting! When changing the size of the sun changed the environment I was like 'oh this is good'