I accept that there are cultural differences between the UK and China, however games play on psychological tendencies which are deeper than nationality, and nobody is immune to dopamine. Systems for tracking people could be automated without adding in the component of a game, which I imagine actually makes the implementation of such a system more complex. As for its effectiveness, consider how much time the average person spends on social networking sites now, then consider how this would look if doing so had incentives to save money, get loans and so on. This kind of system has serious and terrifying potential, and I think would probably be more effective at spreading propaganda than school or work.