The Ultimate Flag Guesser

Test your geography knowledge in the free online Flag Guesser game. Identify flags from all 196 countries in singleplayer or challenge your friends in real-time multiplayer!

Play SoloCreate Multiplayer Party

Why play Flag Guesser on LostStreet?

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196 Countries

Includes every fully recognized independent nation in the world. How many can you identify correctly?

Real-time Multiplayer

Create a custom party room, share the 6-digit code with friends, and race against the clock to guess flags together.

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100% Free Forever

No premium subscriptions, no daily limits, and no paywalls. Just pure geography fun.

How to play Flag Guesser

Flag Guesser is a popular geography quiz game where players are shown the national flag of a random country and must correctly identify which country it belongs to. The game tests your knowledge of vexillology (the study of flags) and world geography.

On LostStreet, we have integrated a high-performance Flag Guesser mode directly into our multiplayer party system. When you create a party lobby, the host can select "Flag Guesser" from the game mode settings, adjust the round time limit (from 30 seconds up to 5 minutes), and start the match.

Tips for guessing flags