What this game teaches
Brain health is unglamorous. The factors with the most consistent evidence are the same ones that protect the heart: blood pressure control, physical activity, not smoking, and treating conditions like diabetes rather than ignoring them.
Hearing loss and social isolation both appear in the modifiable-risk literature and both are easy to overlook, so several questions cover them directly.
The game is careful about what it does not claim. No supplement or brain-training app has been shown to prevent dementia, and the questions say so where that is relevant.