Borderline

Border Line is a free daily geography game that helps players learn the world through an interactive 3D globe. Each day, everyone receives the same five countries to find on a blank globe, with five untimed rounds and one attempt at the daily challenge. Players can build streaks, share their scores and review past puzzles.

Beyond the daily game, Border Line offers unlimited practice in classic name-and-flag, flag-only and silhouette modes. Players can choose a world region or set the difficulty to easy, medium or hard. Its Learn mode uses spaced repetition: countries that are difficult to identify return sooner, while those a player knows well appear less often. Progress is saved across regions, modes and sessions, and a map helps players track their learning.

The site also presents records of which countries players struggle to find and comparisons with other geography games. Created by one person seeking to improve their own geographic knowledge, Border Line requires no login, works offline and is available without an app-store download.