Shardlight

The world ended on the day the bombs fell. Since then, it's always been like this: disease, hunger, death.
What's left of the people scavenge for existence under the unfeeling gaze of the elegant, masked Aristocracy. Green Lung scourges the population, only briefly held at bay by the precious vaccine - and there's never enough to go around.
Amy Wellard is a young mechanic drawn into the covert war between the forces of the Aristocracy and the mysterious, brutal rebel Danton. Can she play both sides - or will she be forced to choose? Is Danton right that the Aristocracy are hiding something important - and if so, what?
-- Reviews --
Rock, Paper, Shotgun: "Grown up, well written, carefully paced, and genuinely interesting to explore."
RPGFan: "Shardlight is crafted beautifully with pixel art reminiscent of the point-and-clicks of yesteryear" 82%
Adventure Gamers: "A dystopia with style." 4/5
Just Aventure - "If you're looking for a classic point-and-click adventure, then you’ll love Shardlight. The story, characters, voice acting, and music are a treat."