In Human Revolution, you play as Adam Jensen, an ex- SWAT cop who now works in corporate security for a biotech company called Sarif Industries. It's an exciting world with a tale that's worth hearing, even if some parts of the performance and gameplay don't hit the same high bar as the others.
And Human Revolution is set at an extremely interesting time in this world's development, as augmented humans and 'normal' people start to clash along lines both class-based and philosophical. That means the game is set in a world that was conceived before the Internet became quite as crazy it is today, before our society's conspiracy theories got a lot deeper than basic boogeymen like 'the Illuminati' and 'Majestic-12.' It's a world where a Chinese biotech firm still makes sense as an evil organization. Why? Probably because this game is set up as a prequel to the original Deus Ex, which was released back in 2000. Deus Ex: Human Revolution feels like the sort of cyberpunk story that no one writes anymore.