Karl vs Clean Flag

The app offers various tours and directions around the Museum Karl-Marx House. You can now explore new aspects of our exhibition from the comfort of your own home or while you are here. You can look forward to • Exhibition texts in English, French, Spanish, Portuguese, Dutch, Italian and Chinese • Audio guides in German and English • Site map for easy orientation • Insights into previous exhibitions with a before and after slider

How well do you know the world? Clean Flag is a beautiful, fast-paced geography quiz app that tests your knowledge of flags, countries, and capitals across the globe. GAME MODES Flags & Countries • Guess the Country — See a flag, name the country • Guess the Flag — See a country name, pick the correct flag • By Region — Focus on any continent or region Capitals • Guess the Capital — See a flag, name its capital city • Flag from Capital — See a capital city, pick the correct flag Explore & Discover • World Ranker — Match 8 countries to the stat they rank highest in (GDP, CO₂, Life Expectancy, HDI, and more) • Country Compare — Wordle-style: guess a hidden country by comparing real-world data • Hidden Flag — Colors are hidden. Type countries to reveal them one by one • Country Outline — Identify countries by their shape alone FEATURES • 195 countries with real flag images • Play by continent or go global • Best streak tracking for every mode • 4 languages: English, Deutsch, Français, Español • iCloud-backed progress CLEAN FLAG PRO Unlock all Capitals modes with a one-time purchase. Restores for free on all your devices. Data sources: Our World in Data