  While the public claim concern for their privacy, they frequently appear to
overlook it. This disparity between concern and behaviour is known as the
Privacy Paradox. Such issues are particularly prevalent on wearable devices.
These products can store personal data, such as text messages and contact
details. However, owners rarely use protective features. Educational games can
be effective in encouraging changes in behaviour. Therefore, we developed the
first privacy game for (Android) Wear OS watches. 10 participants used
smartwatches for two months, allowing their high-level settings to be
monitored. Five individuals were randomly assigned to our treatment group, and
they played a dynamically-customised privacy-themed game. To minimise
confounding variables, the other five received the same app but lacking the
privacy topic. The treatment group improved their protection, with their usage
of screen locks significantly increasing (p = 0.043). In contrast, 80% of the
control group continued to never restrict their settings. After the posttest
phase, we evaluated behavioural rationale through semi-structured interviews.
Privacy concerns became more nuanced in the treatment group, with opinions
aligning with behaviour. Actions appeared influenced primarily by three
factors: convenience, privacy salience and data sensitivity. This is the first
smartwatch game to encourage privacy-protective behaviour.
