I remember when I was about eight or nine years old and my step father just moved in with my mother. He noticed very quickly that I would spend hours sitting on King's Quest and handed me the game Diablo. I'll never forget watching that opening cinematic for the very first time, the birds squaking over the carcasses and demon faces slinking in and out of the shadows of the Cathedral. As soon as I could I claimed the Warrior to be mine and began my single player decent into Hell.
I can still recall my most treasured memory as though it happened yesterday. I was crouched on the balls of my feet in my chair. Diablo's chamber was in my sights. My eyes grew wide and I nearly fell out of my chair from how far forward I was leaning as his huge body came into view on the fire-and-pentagram riddled floor. My cursor flickered over The Dark Lord and I was barely able to hit him once before a single swipe of his claw brought me down to half health. Yelling out in determination and thankful that my huge two handed sword had a magical knock back I proceeded to kite and knock him back for fear of my life. Every few seconds I popped a Potion of Rejuvination and caleld upon the three great dragon heads out of the floor in attempts to kill him.
It was the overwhelming feeling of accomplishment that washed over me as Diablo fell before me and the ending cinematic began to play. The fact that I killed The Dark Lord and brought peace from The Burning Hells. After being introduced to Starcraft for the first time some time later, I've been a dedicated Blizzard fan ever since.