World Challenge Week
Build a 7-day streak in any of eight languages.
Aug 24, 2026 — Aug 31, 2026
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Islands of the World
Tiny atolls to island nations. Place them all?
Jul 20, 2026 — Jul 27, 2026
Fourth of July Challenge
Celebrate the 4th. How well do you know the USA?
Jul 2, 2026 — Jul 7, 2026
World Cup Challenge
Guess the nations playing for the world.
Jun 29, 2026 — Jul 20, 2026
A new country challenge every day
Jun 18, 2026 — Jun 26, 2026