How to simulate rigid bodies under the effect of gravity

How to simulate rigid bodies under the effect of gravity

Hello,
I have a set of pieces that act like a 3d puzzle and I would like to test how they would behave in the real world when acting on gravity. I would cnc them out of wood, so they would be rigid bodies.

I have seen a couple of apps in food4rhino like PHYSX.GH (by kao.gene) and Box2D but I don’t know which one is the best for this sort of test, also if anyone has a script that does this it would be very much appreciated.

have u tried Kangaroo in Grasshopper?