LostStreet is a fun, free online world detective game. You are dropped onto a random street anywhere in the world and use visual clues to guess where you are on the map.

Is LostStreet free to play?

Yes! LostStreet is 100% free with no subscriptions, no daily limits, and no credit card required. You can play right away in your browser.

How do you guess the location in LostStreet?

Look around in 360 degrees for clues like road signs, language on buildings, which side of the road cars drive on, license plates, and nature. Then click on the map to make your guess!

Can I play LostStreet with friends?

Yes! You can play real-time 1v1 duels against players worldwide or create private party rooms to play with up to 20 friends.

What is the daily challenge in LostStreet?

The LostStreet daily challenge is a daily round where players test their street view guessing skills, track consecutive play streaks, and climb the global leaderboards.

Back to Game

196 World Flags · 3 Difficulty Modes

World Flag Guesser Game - Test Your Knowledge

Identify all 196 world country flags in this free interactive quiz. Challenge yourself with multiple choice, hybrid map pinning, or extreme hard mode mapping. Perfect practice for geography students and geoguessers.

Please enable JavaScript to play the flag guesser quiz.

Official LostStreet Vexillology Quiz

Free Country Flag Identifier & World Geography Quiz

How many of the world's 196 national flags can you recognize? Test your knowledge in fast-paced multiple choice, master lookalike color patterns, or drop your pin directly on the world map in pro mode.

Start Flag Quiz — Play Free Flag Identification Guide

196

Sovereign Flags

3 Tiers

Choice & Map Modes

0ms

Zero Sign-Up Gate

5,000 pts

Max Distance Score

Choose Your Challenge Level

Three Ways to Play & Master Flags

Whether you are just learning your first European tricolours or training to be a global vexillology champion, LostStreet has a game mode built for you.

Easy Mode

4-Choice Multiple Choice

A full-screen national flag is shown with 4 country name choices. Fast-paced, intuitive, and perfect for beginners to memorize shapes and regional color palettes.

Instant correct/incorrect feedback chimes
Flag deduplication across all 5 rounds
Great for casual school & family trivia

Play Easy Mode →

Hybrid Gauntlet (Choice + Pin)

The ultimate geography workout. Odd rounds feature 4 multiple-choice options; even rounds eliminate all options and require you to drop your pin on the world map!

Tests flag recognition AND map location
Leaflet interactive world map pinning
Distance scored with Haversine formula

Play Medium Mode →

Hard Mode

100% World Map Pinning

Zero text clues. Zero multiple-choice buttons. You are shown only the flag — pinpoint where that nation sits on planet Earth directly on the interactive map.

For geography purists & GeoGuessr pros
Pin within 25 km for a perfect 5,000 pts
Real geographic coordinate verification

Play Hard Mode →

Simple Rules • Instant Gameplay

How the Flag Guesser Works

Inspect the Flag

A random sovereign nation flag is rendered in crisp vector SVG. Observe stripe orientations, coat of arms, cantons, and regional color signatures.

Make Your Deduction

Select the country from 4 options in Easy mode, or click your best location guess on the full-screen interactive world map in Medium and Hard modes.

Score, Learn & Level Up

Review accurate distance kilometers, see the exact capital coordinates, bank XP for your global player profile, and unlock achievements.

Identification Masterclass

How to Tell Global Flags Apart

Flags follow historical, religious, and geographic patterns. Memorize these core families to boost your quiz accuracy:

SCANDINAVIA

The Nordic Cross

Denmark, Sweden, Norway, Finland, Iceland: All use an off-center vertical cross shifted toward the hoist. Denmark is red/white, Sweden is blue/yellow, and Finland is blue on white.

ISLAMIC WORLD

Crescent & Star

Turkey, Pakistan, Tunisia, Algeria, Azerbaijan, Malaysia: The crescent moon and star represents historic heraldry. Notice the white-on-green of Pakistan vs red-and-white of Turkey.

WESTERN EUROPE

Vertical Tricolours

France, Italy, Ireland, Belgium, Romania: France is Blue-White-Red; Italy is Green-White-Red; Ireland is Green-White-Orange (not red); Belgium is Black-Yellow-Red.

PAN-AFRICAN

Gold, Green & Red

Ghana, Senegal, Mali, Cameroon, Guinea: Derived from Ethiopia's historic colors. Ghana features a central black star; Senegal has a green star; Cameroon has a gold star on red.

SLAVIC NATIONS

Pan-Slavic Colors

Russia, Serbia, Slovakia, Slovenia, Croatia, Czechia: White, blue, and red horizontal stripes. Slovakia and Slovenia add coats of arms on the hoist side to prevent confusion with Russia.

OCEANIA

Australia vs New Zealand

Both share a British Blue Ensign canton. Australia has 6 white stars (including the 7-pointed Commonwealth Star). New Zealand has 4 red stars outlined in white.

Read the Complete 196-Country Flag Masterclass→

Common Inquiries

Frequently Asked Questions

What is the LostStreet Flag Guesser?+

The LostStreet Flag Guesser is a free online quiz game where players identify country flags from around the globe. Covering all 196 recognized sovereign nations, the game features multiple difficulty settings ranging from 4-option multiple choice to pinpointing countries directly on an interactive world map.

Is the flag identifier quiz completely free?+

Yes! LostStreet Flag Guesser is 100% free with no subscription, no credit card, and no registration required. You can play unlimited singleplayer rounds, build streak rewards, and hone your global flag recognition skills directly in your web browser.

What are the 3 difficulty modes in Flag Guesser?+

LostStreet offers three progressive modes: Easy Mode (straightforward 4 multiple-choice options), Medium Mode (hybrid gameplay alternating between multiple-choice questions and interactive Leaflet map pin drops), and Hard Mode (pure world map pinning where you only see the flag and must click the exact country location).

How does the scoring formula work in Map Pinning mode?+

In Hard mode and Medium map-pin rounds, scoring is calculated using the Haversine distance formula between your pin and the target country's geographic coordinates. A pin within 25 km yields the maximum 5,000 points, followed by exponential decay with distance.

How can I tell lookalike flags apart (e.g. Chad vs Romania, Indonesia vs Monaco)?+

Chad and Romania have identical blue-yellow-red stripes, but Chad uses a slightly deeper indigo blue. Indonesia and Monaco share red-and-white horizontal stripes, but Monaco uses a wider 4:5 ratio while Indonesia uses 2:3. Poland flips this combination with white on top and red on the bottom.

Ready for the Vexillology Challenge?