Geomasters

Geomasters is a free geography quiz game you play in your browser, with no account and no install. It covers more than 194 countries across eight categories: capitals, flags, country shapes, location, population, land area, currencies and national dishes.

The main draw is live multiplayer. Rooms open every five minutes, rotating through world regions, and everyone in a room answers the same questions against the same clock. There is also Conquest, a map-based mode where you take territory by answering questions about the countries you attack, and fortify what you hold.

Solo play tracks mastery country by country on an interactive world map, so you can see which parts of the world you actually know. Ranked play has a tiered ladder and seasonal leaderboards. Every quiz topic also has its own page you can practice on directly.