By skyforbes One of my favorite things about Warframe is that, thanks to the way it evolved over the years, the story kind of sneaks up on you: there doesn't seem to be much of a plot at all initially, and you're just there to enjoy the parkour and gunplay and gear grinding. But then bits of plot and lore start coming together and before you know it, you're invested in the characters and eagerly awaiting the next update just to find out what happens next in the story. It's a bit like the TV show "Babylon 5," where the first season is mostly standalone episodes with little bits of continuity, but by the end it's a fully serialized storyline.
What are some other games that don't seem like they have much of a story at first, but end up strongly story-driven by the end?