| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,328 |
| Europe Map Quiz | 0 | - | 5.00 | 4,779,793 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,681 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,048 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,583 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,461 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,595 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,359 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,101 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,217 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,673 |
| The Only European Country ... | 0 | - | 4.91 | 218,268 |
| European Countries NOT in NATO | 0 | - | 4.90 | 62,104 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,494 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,247 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,700 |
| Name the English Monarchs | 0 | - | 4.91 | 505,257 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,664 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,512 |
| Name that Greek Letter | 0 | - | 4.93 | 324,618 |
| History of Russia Quiz | 0 | - | 4.47 | 31,981 |
| The Trojan War | 0 | - | 4.83 | 39,928 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,643 |
| History of Italy | 0 | - | 4.55 | 32,105 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,457 |
| Roman Emperors | 0 | - | 4.95 | 120,843 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,775 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,373 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,037 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,308 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,383 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,258 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,809 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,157 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,591 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,120 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 174,785 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,908 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,623 |
| Slavic Countries | 0 | - | 4.96 | 112,156 |
| Counties of England | 0 | - | 4.97 | 801,044 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,937 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,917 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,884 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,086 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,531 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,296 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,216 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,155 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,259 |
| Monarchies of Europe | 0 | - | 4.90 | 98,606 |
| European Countries with One Border | 0 | - | 4.97 | 183,474 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,219 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,212 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,802 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,307 |
| History of Austria | 0 | - | 4.70 | 17,949 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,325 |
| Geography of the French Empire | 0 | - | 4.45 | 27,193 |
| The French Revolution | 0 | - | 4.47 | 24,108 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,499 |
| States of Germany | 0 | - | 4.95 | 153,920 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,539 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,507 |
| Ancient Greek Words | 0 | - | 4.93 | 112,210 |
| Regions of Italy | 0 | - | 4.92 | 76,641 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,635 |
| The Vikings! | 0 | - | 4.46 | 28,388 |
| The Portuguese Empire | 0 | - | 4.58 | 12,094 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,972 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,583 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,353 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,803 |
| Champions League Winners | 0 | - | 4.92 | 1,012,760 |
| History of France | 0 | - | 4.61 | 57,453 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,957 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,403 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,435 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,094 |
| Geography of the British Empire | 0 | - | 4.48 | 39,811 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,635 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,580 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,529 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,699 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,224 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,040 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,163 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,357 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,549 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,549 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,550 |
| Russia Country Quiz | 0 | - | 4.83 | 115,118 |
| Countries That Border Russia | 0 | - | 4.98 | 463,842 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,604 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,502 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,870 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,494 |
| Departments of France | 0 | - | 4.93 | 54,831 |
| Countries Bordering France | 0 | - | 4.83 | 404,298 |
| Germany Country Quiz | 0 | - | 4.83 | 158,545 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,873 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,282 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,165 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,999 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,000 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,860 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,552 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,694 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,950 |
| History of The Netherlands | 0 | - | 4.46 | 17,524 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,298 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,563 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,428 |
| Medieval English History | 0 | - | 4.53 | 43,616 |
| England or Wales? | 0 | - | 4.94 | 45,885 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,571 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,318 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,551 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,280 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,617 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,765 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,760 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,822 |
| Countries that Border Poland | 0 | - | 4.99 | 172,915 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,121 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,210 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,872 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,895 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,005 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,826 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,062 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,376 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,016 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,911 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,303 |
| Counties of Ireland | 0 | - | 4.92 | 196,775 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,150 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,012 |
| History of Spain | 0 | - | 4.23 | 21,143 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,752 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,860 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,943 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,164 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,258 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,009 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,305 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,718,018 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,592 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,610 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,983 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,963 |
| French History Multiple Choice | 0 | - | 4.55 | 33,171 |
| History of Germany | 0 | - | 4.39 | 52,939 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,129 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,780 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 44,014 |
| Geography of the Roman Empire | 0 | - | 4.56 | 52,148 |
| Roman Names for Places | 0 | - | 4.62 | 58,599 |
| Byzantine History | 0 | - | 4.91 | 28,984 |
| Byzantine Emperors | 0 | - | 4.92 | 14,490 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,277 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,806 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,900 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,211 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,868 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,265 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,047 |
| Prime Ministers of the UK | 0 | - | 4.95 | 441,259 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 403,784 |
| Malta Country Quiz | 0 | - | 4.81 | 31,197 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,658 |
| Russian History A-Z | 0 | - | 4.35 | 32,059 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,365 |
| Russian Inventions | 0 | - | 4.39 | 13,003 |
| French Inventions | 0 | - | 4.10 | 13,918 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,562 |
| History of Paris | 0 | - | 4.24 | 13,667 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,063 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,414 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,209 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,144 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,999 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,943 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,710 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,215 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,915 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,537 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,339 |
| British History A-Z #1 | 0 | - | 4.45 | 46,942 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,977 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,906 |
| History of Scotland | 0 | - | 4.51 | 21,149 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,739 |
| Australian Capitals | 0 | - | 4.92 | 62,802 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,547 |
| Official European Union Languages | 0 | - | 4.97 | 239,394 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,416 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,623 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 120,989 |
| European Geography By Letter - C | 0 | - | 4.43 | 122,509 |
