Game Engines provide the physics and reality needed for a natural playing experience. So much so that a modern game is capable of immersing the player into life like environment provoking sadness, anger and a high notion of victory and achievement. I’ve played about a dozen in my little life and continue to do so. They give me great satisfaction and a means to engage in non-lethal rivalry. Hats off to these masterpieces that have brought worlds to me at mouse clicks and button presses.