Is it possible to change the law's proportionality to mass?

[k290]

I briefly had a look at the free version. I see it's possible to play with 'a' in the gravity equation. In the paid version is it possible to play with m? In our universe, gravity is proportional to mass due to the geometry of our spacetime. I'm wondering about universes where, for example, the gravitational force turns out to be proportional to the square root of the mass.

[testtubegames]

In the full version, you can play with a lot of things (arbitrary force dependence on distance, or even time), but I don't have a way to change the mass dependency. Sorry.