Mensa "provides a forum for intellectual exchange among members. Its activities include the exchange of ideas by lectures, discussions, journals, special-interest groups, and local, regional, national, and international gatherings; the investigations of members' opinions and attitudes; and assistance to researchers, inside and outside Mensa in projects dealing with intelligence or Mensa."

Welcome to Puzz.com, the web's largest resource for IQ tests, puzzles, trivia, games & contests for entertainment & education.

This prestigious international society offers free professional IQ tests, challenging puzzles and brainteasers, and premium chess, backgammon, bridge, and go tournaments.

The Triple Nine Society is a high-IQ group open to anyone scoring at or above the 99.9th percentile, approximately 150, on specified IQ tests.

Welcome to the Mega Society East, a high-IQ group open to anyone scoring at the 1/1, 000, 000 level, approximately IQ 170 or higher.