It was a dark and stormy night, and Jack, a hardcore gamer, was huddled in front of his computer, immersed in the world of Crysis 1. He had been playing the game for hours, trying to take down the alien threat on the island, but it was proving to be a tough challenge.
You will notice that while you are invincible, you can still be thrown by explosions (physics intact). This is the "Extra Quality" at work—preventing soft-locks.