A few years ago, “boob physics”—how breasts “jiggled” in video games—was actually a topic of conversation
http://kotaku.com/176408/mammarial-musing-boobs-as-driving-force-in-games-development
This was probably because Dead or Alive creator Tomonobu Itagaki was actively promoting games (this, for example) during this period—games that featured boob physics.
http://kotaku.com/217057/dead-or-alive-xtreme-pole-dancing
Boob physics are not a thing of the past—heck, there’s this example from last summer. And more recently, there’s this new footage from Asura’s Wrath, a game based on Buddhist mythology and featuring planet splitting battles.
https://kotaku.com/besides-exercises-this-game-has-breast-physics-and-a-s-5819878
If you don’t like boobs (not everyone does), the footage also features man butt. Or rather, male god butt.
Hot Springs [GameTrailers]