Pretty cool game, definitely a unique concept.
I’m a sucker for physics simulation, and n-body problems are tricky in general, although here I guess you’re getting away with it by keeping the number of planets small (as in, not thousands or millions). I’m not sure how physically accurate this implementation is but it doesn’t seem too bad.
Anyway, I had fun playing it and it’s an interesting take on the theme, could use a bit more polish in terms of the UI and other visuals, but it’s alright for a jam game.
The main actionable criticism I’d give, then, is that in the beginning it wasn’t really clear what the green and blue markers were and what the win conditions were. The guide does sort of explain it but it doesn’t really tie the rules together with the actual visuals on screen, and there’s a bit of a disconnect there.
It would also be nice being able to position the objects and set their velocities with more granularity, perhaps with some tools to aid with precise alignment (e.g. getting three equal mass objects to orbit each other a third of a full circle apart from each other at the right kind of tangential velocity to get them to orbit in a stable manner, not super easy to do with the current grid-based solution)