(warning: Shadows of the Colossus spoilers!)
"... what have you learned from a video game that has helped you in real life?"
Having been an idealist, I have always sought to fight wrongs. I have marched, picketed, and volunteered time and money to fight tyranny and "monsters" in our midst. Doing what is right has always been at the core of my being, and then there was...
... Shadow of the Colossus.
There are few games about fighting giant monsters that are so exhilarating -- climbing, hacking, plunging swords deep into the behemoths and watching their blood spray. It is one of the great "David and Goliath" power fantasies -- the small and inconsequential topple evil giants. The hunted becomes the hunter -- accomplishing the impossible and ridding the world of abominations! As each monster one-after-another falters, crumples in agony , and dies under your sword, the gameplay and moral imperative builds to a crescendo --
-- only to turn on the player in the last act.
In your zeal -- wrapped in good intentions (as in "the road to hell is paved with good intentions.") -- you have been manipulated by dark forces into doing their sinister bidding. Becoming the unwitting tool of evil, you have blood-thirstily murdered the Colossi, possibly the last remnant of good in the world. And in so doing, you are the true monster.
The moral ramifications of Shadow of the Colossus -- backed by time, age, and experience -- have stayed with me and informed my thinking. While I am still an idealist at heart, I am much more vigilant in researching the sides of arguments before proclaiming "right" and "wrong." I try not to take issues at face value... and never accept sweet words that sound nice and agree with my thinking over hard data that might call into question my own perspectives and opinions. For although I still believe in fighting tyranny and giant monsters...
... I could not live with myself if I was in fact the unwitting tool of evil.
While Shadow of the Colossus was not the only element that lead me to this realization, it is a crucial one... and a game I think on often for this very theme. It has directly informed both my life and my own creative work... and I would be the lesser had I not played it.