The Curfew is terrific science fiction, pretty good cinema, a nicely designed defense of individual liberty, and an okay graphic adventure. It also won the Learning & Education award at the 2011 Games for Change Festival.
Designed by Kieron Gillen and funded by Britain's Channel 4, The Curfew takes place in 2027 in a UK dominated by "the Shepherd Party," which plays on fears of terrorism to impose near-absolute control over its citizens. They do so through gamification; you earn "citizen points" for obedience, and lose them through disobedience. Earn enough, and you can be a "Class A" citizen; its not clear what this gets you, other than jumping the queue at fast food joints.