I got it to work, I used a Linux build and it worked fine. Web build doesn't work for me (tested on firefox).
Gameplay: I like this simulation, it would be nice to have some kind of destruction in it. For example, asteroids destroying planets.
Art: All of the planets and asteroids have nice sprites
Audio: It's fine, but somehow it reminded me of a carnival/circus song
Theme: Planets, space, it fits
Devlog: Really cool and insightful devlog