How do I add 3D surface-based Gravity, like in Run 3

[Suthriel]

There is also the " Directional & Planet Gravity" plugin, maybe this gets an update too.

https://www.fab.com/de/listings/5e47876e-8dc9-457f-870b-77ba2a7e65da

Free Directional gravity, gravitatation like Planetary Anihilation