There was a porn game called Wild Life that had very realistic physics. It took into account the shape and the relative rigidity of the clothing, so on clothing with cleavage, you would see the tops of the breasts jiggle more than the overall bust. And the motion didn't look like a pair of flippers extending from the chest. The horizontal part of the bust slightly contracted as the breast mass bounced upwards, then expanded outwards and down as the mass hit the bottom of the jiggle.

I imagine that DOA would have had this level of physics if it didn't get killed off by the West.