Train your brain. Learn for life.

Honest note. These games are faithful versions of tasks from the research literature — each one lists its sources. Practising them reliably improves the skill you practise and closely related skills, and your scores here will show it. Whether that carries over into everyday thinking is still debated by scientists, so treat Build as an enjoyable, measurable workout rather than a treatment. Keep sessions short, stop if you feel tired or frustrated, and if memory or thinking changes are worrying you, talk to a doctor.

More on how each game was chosen, the evidence and the limits: About & safety.