Features that make you love a game.

[Skyblade]

Games in which "no" means "no." Like in Suikoden. Specifically Suikoden IV where you can choose not to leave the island you're stranded on and you get stuck in an infinite loop of doing absolutely nothing until you load your last save. Though I would have preferred a bit more of something to happen on that island. I also loved that when you chose to execute someone, it wasn't just a test of character but actually happened.

Golden Sun

"Will you take this quest to save the world?"
"No."

...And the world drifts to its inevitable demise. -GAME OVER-

Awesome.