FFX. Here's whyThe story covers a lot of themes similar to our own world, like religion, mankind's use of technology, social control, racism, politics, family values and of course life and death. It gave (and actually still gives) me a lot to think about.

Also, it takes place in a world that absolutely sucks me in every time I play through it. Everything in Spira feels alive and credible. Especially since it's not a perfect paradise, but because nothing is safe out there.