Mine was probably Metal Gear Solid 4.The ENTIRE game is sad.But if i had to choose a specific moment,it would definently be the ending *sniff* it had me in tears.Whats the saddest moment you've seen in a game?Whats the saddest game you've played?
The way that most colossi aren't aggressive and seemingly just want to be peaceful until you, doing what is seemingly good but seems evil to them (and is ultimately evil), come along and unjustly kill them. Then..as they die...it is a slow and pathetic (pathetic in the term of saddening) death.
As you are killing these creatures...the actions you are making become evident on you as your skin becomes paler, hair darker, and small horns protruding from your head. When you are finally done, the group of warriors pursuing you find you and believe you to be possessed and try to kill you..your final action, before they slay you and you receive a death similar to the colossi, is to reach your love..to be by her again.
It is then, after your death, that your love is brought back to life...but she is now secluded from the rest of the world due to the bridges destruction. You see her...and then, limping to her, you see your horse. The same horse that had sacrificed itself to save you. They find a baby with small horns on its head. A baby that is hope..hope that the Wanderer will be able to atone for his action
Oh Cortana, why did you have to go? It was an amazing journey from sacrificing myself for you in Reach, to your natural humor alongside Master Chief. You will be missed.
*spoilers" (?) Masons semi-death. Roach and Ghost. Soap. Yes, f*ck you, I like my CoD.
starkillers death from Force Unleashed 1 was also very sad. I honestly teared up. Then I realized they were making a sequel and got happy on the inside. So I played the sequel and cried because it didnt live up to the first one.