I had a lot of fun with this game. I know it's been a while since you made it, but I would like to know how it works. Unfortunately, I don't know lua, but if you could tell me the basic formula, or point me to a tutorial, I would be very thankful.

Just use WINE or steamplay

read my reply to uwu22 above

Chrome OS doesn't support anything that isn't directly from the chrome web store, and those apps don't have access to the things  (like grabbing your mouse or working o top of other applications) that this needs to run. Chrome is bad and I recommend getting a mac or windows computer next, since nothing on itch.io can run on Chrome. If you really want to, though, you could boot your CB into developer mode, and then install Linux OS, which chrome is based on but doesn't have all the restrictions.

How did you make the gravity mechanic? I wrote my own, but I cant get to work with multiple planets.