planets.tbm in your mod folder.
planets.lua in your script folder.

Small planets with semi-realistic gravity. Each planet has its own pull, and it's related to proximity. I had to fudge a lot because real real gravity is too subtle, and getting the planets to orbit quickly would require that their mass to be so great as to crush you, standing on the surface.

You can hit 'o' to toggle the planets' gravity affecting each other. When the planets are orbiting, replays are broken. And in either case, ghosts are only somewhat accurate.

There's a lot of calculations going on, so it could bog down your processor. Recommend turning off shaders and stuff.

Enjoy.