1. Shadow of the Colossus - Agro's Death
http://www.youtube.com/watch?v=SclbRYmGG9A Unlike other games Shadow of the Colossus doesn't build up to a depressing end or throw a sad moment at you in the middle of the game. SotC pretty much drops you in it from the start, what it does so well though is convince you that you really are alone in this world. Your only companion in this huge, open and desolate world is your horse Agro. The story alone is pretty sad, a man travelling to the edge of the world, to a secret ancient temple to bring the woman he loved back to life. Whereas with other games you bond with characters in the game such as your allies or love interests, in SotC the only person no the only thing you can bond with is your horse. You may not use him in every battle against the Colossi but he's always there for you at your beck and call. When he's taken from you it's a moment that has stuck with me, despite how long ago it was. As you're travelling across a bridge it begins to collapse and in a bid to save you, Agro throws you to safety on the other side. As Wander rushes to the edge, Agro is seen falling towards the water below as you cry out his name. Wander takes one last look down the ravine before continuing his climb to the last colossus, the rage at losing his beloved companion and friend fuelling his every step. Although Agro is shown to have survived during the ending scene, it still doesn't take away the sting of the scene that I've ranked as the most heart breaking moment in video gaming.