This is an example of what I would write for a survival-horror type game, based off of Darkening Hell's Door. The main character is trying to sneak through an area with one or more extremely dangerous enemies in it. At 1:04 and 1:54 the character is seen or heard by whoever or whatever he is trying to avoid, but only briefly, and they do not know exactly where he is. A short amount of time is spent looking for him, then the person or creature goes back to whatever it was doing. At 2:10, the character has definitely been seen, and the enemy or enemies give chase. The chase ends at 2:41 with the main character mortally wounded, only able to limp or crawl away as the person or (as I like to think) monster closes in for the kill at 2:52. The heartbeat is obvious; the "GAME OVER" screen.