If you want a free “brain quiz” in the playful sense — a hobby that makes you remember facts, compare options, and react quickly — TrivialWorld fits: short browser sessions with general knowledge and mixed topics.
Here “mind” means healthy leisure: light stimulation while you play, not a medical promise and not a substitute for professional or clinical advice. We do not diagnose, measure clinical cognition, or sell therapies.
RUN mode adds survival tension: you keep going while you are right, and a mistake may end the streak depending on the rules. You can try without signing up; a free account with a valid email helps persist scores and leaderboards with a verified profile.
We do not use your email for advertising without your permission. Typical messages are service-related (verification, password reset, security).
For full rules, see “how to play”. If you just want a break with questions, start a RUN from the button.