The moment when you see the first colossus in Shadow of the Colossus. You've watched a contemplative intro movie that sets the stage, been faced with a desolate land that you're seemingly completely alone in, and charged headlong with only the light shining off your sword to guide you. You've seen nothing but you and your horse moving in this place in the half hour or so you've been playing so far. You've done just enough platforming to know that you're a very normal human with no magical abilities, and if you've swung your sword at all you've seen that you have no real skill with it. You just know that you've got to kill these unseen colossi to hold up your end of the deal with the voice in the sky. And then a building shaped like a gorilla walks past you https://www.youtube.com/watch?v=3Ckn0mdFyEU