| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,564 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,406 |
| Slavic Countries | 0 | - | 4.96 | 111,884 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,197 |
| History of Russia Quiz | 0 | - | 4.47 | 31,950 |
| Europe Map Quiz | 0 | - | 5.00 | 4,771,397 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,759 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,451 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,111 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,326 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,146 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,011 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,099 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,589 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,469 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,414 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,065 |
| Name the English Monarchs | 0 | - | 4.91 | 503,974 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,985 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,427 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,926 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,883 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,513 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,586 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,050 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,695 |
| The Only European Country ... | 0 | - | 4.91 | 217,411 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,589 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,907 |
| Name that Greek Letter | 0 | - | 4.93 | 324,177 |
| The Trojan War | 0 | - | 4.83 | 39,799 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,253 |
| History of Italy | 0 | - | 4.55 | 32,054 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,655 |
| Roman Emperors | 0 | - | 4.95 | 120,403 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,721 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,296 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,957 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,248,690 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,776 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,932 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,443 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,389 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,362 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,236 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,071 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,543 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,514 |
| Counties of England | 0 | - | 4.97 | 798,935 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,213 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,076 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,130 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,914 |
| Ancient Greek Words | 0 | - | 4.93 | 111,915 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,933 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,048 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,858 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,717 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,994 |
| Monarchies of Europe | 0 | - | 4.90 | 98,354 |
| European Countries with One Border | 0 | - | 4.97 | 183,128 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,901 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 86,704 |
| Geography of Russia | 0 | - | 4.57 | 21,555 |
| Russian Inventions | 0 | - | 4.39 | 12,979 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,288 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,800 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,548 |
| Romania Country Quiz | 0 | - | 4.63 | 53,906 |
| History of Austria | 0 | - | 4.70 | 17,905 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,851 |
| Geography of the French Empire | 0 | - | 4.45 | 27,155 |
| The French Revolution | 0 | - | 4.47 | 24,064 |
| History of France | 0 | - | 4.59 | 57,276 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,184 |
| States of Germany | 0 | - | 4.95 | 153,214 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,287 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,605 |
| Regions of Italy | 0 | - | 4.92 | 76,240 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,279 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,428 |
| The Vikings! | 0 | - | 4.46 | 28,368 |
| The Portuguese Empire | 0 | - | 4.58 | 12,082 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,414 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,419 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,158 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,405 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,672 |
| Geography of the British Empire | 0 | - | 4.48 | 39,735 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,754 |
| Champions League Winners | 0 | - | 4.92 | 1,009,924 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,359 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,265 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,932 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,385 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,637 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,071 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,041 |
| Russia Country Quiz | 0 | - | 4.83 | 114,699 |
| Countries That Border Russia | 0 | - | 4.98 | 462,842 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,778 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,163 |
| Departments of France | 0 | - | 4.93 | 54,469 |
| Countries Bordering France | 0 | - | 4.83 | 403,567 |
| Germany Country Quiz | 0 | - | 4.83 | 158,182 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,630 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,691 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,665 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,597 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,615 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,032 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,119 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,216 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,988 |
| England or Wales? | 0 | - | 4.94 | 45,803 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,007 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,096 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,598 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,675 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,618 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,417 |
| Lithuania Country Quiz | 0 | - | 4.61 | 31,681 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,088 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,076 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,947 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,840 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,730 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,419 |
| History of The Netherlands | 0 | - | 4.46 | 17,484 |
| Medieval English History | 0 | - | 4.53 | 43,572 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,708,622 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,079 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,269 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,188 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,520 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,644 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,377 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,792 |
| Countries that Border Poland | 0 | - | 4.99 | 172,613 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,325 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,504 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,759 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,953 |
| Montenegro Country Quiz | 0 | - | 4.61 | 23,768 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,392 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,669 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,856 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,666 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,967 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,286 |
| French History Multiple Choice | 0 | - | 4.55 | 33,127 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,507 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,378 |
| History of Germany | 0 | - | 4.39 | 52,898 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,898 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,712 |
| Counties of Ireland | 0 | - | 4.92 | 196,068 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,022 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,358 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,792 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,993 |
| Roman Names for Places | 0 | - | 4.62 | 58,402 |
| Byzantine History | 0 | - | 4.91 | 28,919 |
| Byzantine Emperors | 0 | - | 4.92 | 14,367 |
| History of Spain | 0 | - | 4.23 | 21,116 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,219 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,369 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,282 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,781 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,847 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,187 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,778 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,208 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,002 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,082 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,805 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,009 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 402,759 |
| Malta Country Quiz | 0 | - | 4.81 | 31,117 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,398 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,354 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,602 |
| Russian History A-Z | 0 | - | 4.35 | 31,869 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,063 |
| Estonia Country Quiz | 0 | - | 4.60 | 31,137 |
| French Inventions | 0 | - | 4.10 | 13,909 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,363 |
| History of Paris | 0 | - | 4.24 | 13,660 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,744 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,205 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,177 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,126 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,654 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,746 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,515 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,068 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,737 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,298 |
| British History A-Z #1 | 0 | - | 4.45 | 46,585 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,811 |
