BioShock is probably better remembered for its story and themes over its gameplay, but the gameplay is pretty good, too! It's a solid shooter with a cool set of powers that can do all kinds of interesting things depending on the environment. And speaking of that environment, Rapture is certainly one of the most imaginative settings for a game. The art deco aesthetic was such a perfect choice. And yeah, the story is awesome. When it released, this game stood out for its uniqueness, and I think that will remain part of its legacy.