This game is inspired by a real experiment. In a 2026 PNAS study, NYU researchers had 120 adults play a digital task. Without asking a single question about mood, the way people played predicted who was depressed surprisingly well. Play style also tracked with how severe depression was. Anhedon.io is a 3-minute recreation of that task. Play it, and we'll show you where you land compared to the study's participants. Read the study