| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,427 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,306 |
| Slavic Countries | 0 | - | 4.96 | 111,776 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,123 |
| History of Russia Quiz | 0 | - | 4.47 | 31,940 |
| Europe Map Quiz | 0 | - | 5.00 | 4,767,056 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,575 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 82,761 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,877 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,180 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,019 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,650 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,983 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,532 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,414 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,382 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,586 |
| Name the English Monarchs | 0 | - | 4.91 | 503,365 |
| Countries that Border Poland | 0 | - | 4.99 | 172,397 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,913 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,306 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,903 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,854 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,380 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,297 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,764 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,458 |
| The Only European Country ... | 0 | - | 4.91 | 217,029 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,367 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,192 |
| Name that Greek Letter | 0 | - | 4.93 | 324,003 |
| The Trojan War | 0 | - | 4.83 | 39,768 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,026 |
| History of Italy | 0 | - | 4.55 | 32,024 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,597 |
| Roman Emperors | 0 | - | 4.95 | 120,228 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,697 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,271 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,912 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,246,346 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,329,786 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,787 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,314 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,031 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,262 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,889 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,376 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,467 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,250 |
| Counties of England | 0 | - | 4.97 | 797,921 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 357,119 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,052 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,065 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,399 |
| Ancient Greek Words | 0 | - | 4.93 | 111,767 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,967 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,699 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,519 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,886 |
| Monarchies of Europe | 0 | - | 4.90 | 98,242 |
| European Countries with One Border | 0 | - | 4.97 | 182,955 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,735 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,744 |
| Geography of Russia | 0 | - | 4.57 | 21,548 |
| Russian Inventions | 0 | - | 4.39 | 12,970 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,258 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,767 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,490 |
| Romania Country Quiz | 0 | - | 4.63 | 53,845 |
| History of Austria | 0 | - | 4.70 | 17,881 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,630 |
| Geography of the French Empire | 0 | - | 4.45 | 27,133 |
| The French Revolution | 0 | - | 4.47 | 24,031 |
| History of France | 0 | - | 4.59 | 57,149 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,974 |
| States of Germany | 0 | - | 4.95 | 152,887 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,164 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,444 |
| Regions of Italy | 0 | - | 4.92 | 76,082 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,212 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,295 |
| The Vikings! | 0 | - | 4.46 | 28,357 |
| The Portuguese Empire | 0 | - | 4.58 | 12,076 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,160 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,296 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,067 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,378 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,584 |
| Geography of the British Empire | 0 | - | 4.48 | 39,720 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,724 |
| Champions League Winners | 0 | - | 4.91 | 1,008,331 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,977 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,226 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,133 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,597 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,124 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,350 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 261,540 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,880 |
| Russia Country Quiz | 0 | - | 4.83 | 114,593 |
| Countries That Border Russia | 0 | - | 4.98 | 462,092 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,732 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,935 |
| Departments of France | 0 | - | 4.93 | 54,275 |
| Countries Bordering France | 0 | - | 4.83 | 402,869 |
| Germany Country Quiz | 0 | - | 4.83 | 158,022 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,480 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,683 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,526 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,181 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,566 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,566 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,020 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,813 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,801 |
| England or Wales? | 0 | - | 4.94 | 45,749 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,704 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,048 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,667 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,295 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,333 |
| Lithuania Country Quiz | 0 | - | 4.61 | 31,655 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,066 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,038 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,936 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,810 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,258 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,373 |
| History of The Netherlands | 0 | - | 4.46 | 17,450 |
| Medieval English History | 0 | - | 4.53 | 43,553 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,703,870 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,936 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,241 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,148 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,449 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,547 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,214 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,755 |
| Poland Country Quiz | 0 | - | 4.20 | 63,351 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,320 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,218 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,746 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,921 |
| Montenegro Country Quiz | 0 | - | 4.61 | 23,752 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,380 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,507 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,812 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,378 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,912 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,230 |
| French History Multiple Choice | 0 | - | 4.55 | 33,092 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,493 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,059 |
| History of Germany | 0 | - | 4.39 | 52,869 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,769 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,689 |
| Counties of Ireland | 0 | - | 4.92 | 195,646 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,920 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,192 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,769 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,973 |
| Roman Names for Places | 0 | - | 4.62 | 58,353 |
| Byzantine History | 0 | - | 4.91 | 28,894 |
| Byzantine Emperors | 0 | - | 4.92 | 14,279 |
| History of Spain | 0 | - | 4.23 | 21,106 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,199 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,190 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,049 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,770 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,823 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,172 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,731 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,184 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,985 |
| Prime Ministers of the UK | 0 | - | 4.95 | 439,578 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,738 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,915 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 402,035 |
| Malta Country Quiz | 0 | - | 4.81 | 31,088 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,425 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,500 |
| European Cities Beginning with B - Click Map | 0 | - | 4.78 | 78,281 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,209 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,101 |
| Russian History A-Z | 0 | - | 4.35 | 31,795 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,951 |
| Estonia Country Quiz | 0 | - | 4.60 | 31,116 |
| French Inventions | 0 | - | 4.08 | 13,900 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,278 |
| History of Paris | 0 | - | 4.24 | 13,655 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,604 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,107 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,160 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,118 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,578 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,656 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,427 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,008 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,642 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,285 |
