| Anglo-Saxon and Viking Kings of England | 0 | - | 4.82 | 9,870 |
| Counties of England | 0 | - | 4.96 | 688,950 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 31,706 |
| Regions of Spain Quiz | 0 | - | 4.85 | 94,658 |
| Cantons of Switzerland | 0 | - | 4.96 | 40,152 |
| Parts of the United Kingdom | 0 | - | 4.88 | 83,732 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 133,416 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 62,575 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.93 | 49,026 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 58,536 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 46,279 |
| Regions of France Map Quiz | 0 | - | 4.96 | 127,202 |
| States of Germany Map Quiz | 0 | - | 4.91 | 120,065 |
| States of Germany | 0 | - | 4.94 | 123,262 |
| Germany Immigration by Country | 0 | - | 4.90 | 69,574 |
| States of the German Confederation in 1848 | 0 | - | 4.83 | 26,426 |
| Counties of Ireland | 0 | - | 4.89 | 158,915 |
| Regions of Italy | 0 | - | 4.88 | 60,231 |
| Europe Map Quiz | 0 | - | 5.00 | 4,285,076 |
| Countries Surrounding Rome | 0 | - | 4.96 | 46,558 |
| Spain Cities Map Quiz | 0 | - | 4.86 | 86,112 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 169,044 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 99,763 |
| England or Wales? | 0 | - | 4.93 | 40,181 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.71 | 53,767 |
| France Cities Map Quiz | 0 | - | 4.95 | 147,752 |
| Germany Country Quiz | 0 | - | 4.82 | 139,924 |
| Germany Cities Map Quiz | 0 | - | 4.84 | 105,819 |
| Italy Country Quiz | 0 | - | 4.81 | 108,732 |
| Regions of Italy Map Quiz | 0 | - | 4.95 | 133,491 |
| Italy Cities Map Quiz | 0 | - | 4.96 | 127,292 |
| The Vikings! | 0 | - | 4.44 | 27,098 |
| Sweden Immigration by Country | 0 | - | 4.66 | 42,222 |
| English Monarchs Quiz | 0 | - | 4.91 | 446,263 |
| Wives of King Henry VIII | 0 | - | 4.53 | 44,624 |
| Countries the UK Declared War On | 0 | - | 4.58 | 112,148 |
| Geography of the British Empire | 0 | - | 4.50 | 36,988 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 385,551 |
| Andorra Country Quiz | 0 | - | 4.87 | 27,823 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 583,582 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 71,629 |
| Roman Emperors | 0 | - | 4.95 | 95,714 |
| History of The Netherlands | 0 | - | 4.42 | 15,743 |
| Countries Closest to Iceland | 0 | - | 4.87 | 62,663 |
| Medieval English History | 0 | - | 4.52 | 40,771 |
| Countries That Use the Euro | 0 | - | 4.92 | 62,602 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 335,443 |
| 10 Easternmost Countries in Europe | 0 | - | 4.85 | 91,906 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.83 | 39,020 |
| The Only European Country ... | 0 | - | 4.94 | 177,955 |
| Ancient Greek Trivia | 0 | - | 4.55 | 63,346 |
| The Trojan War | 0 | - | 4.81 | 35,900 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.81 | 85,196 |
| Geography of the Dutch Empire | 0 | - | 4.71 | 32,415 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 74,537 |
| Invasions of Great Britain | 0 | - | 4.49 | 55,534 |
| British History Multiple Choice #1 | 0 | - | 4.47 | 51,488 |
| Name that Greek Letter | 0 | - | 4.94 | 295,657 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 101,002 |
| Provinces of the Netherlands | 0 | - | 4.61 | 33,229 |
| 100 Greatest Britons Quiz | 0 | - | 4.44 | 46,002 |
| British Acronyms | 0 | - | 4.42 | 43,329 |
| Foods in a Full English Breakfast | 0 | - | 4.41 | 73,306 |
| The UK for Americans - True or False | 0 | - | 4.46 | 54,822 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 24,759 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.76 | 18,982 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,042,010 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.93 | 1,181,365 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 160,328 |
| 10 Westernmost Countries in Europe | 0 | - | 4.95 | 138,255 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.94 | 185,601 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 76,833 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 284,749 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 115,354 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 74,387 |
| Eastern Europe Map Quiz | 0 | - | 4.89 | 115,530 |
| Slavic Countries | 0 | - | 4.96 | 100,280 |
| Regions of France | 0 | - | 4.63 | 100,197 |
| France Immigration by Country | 0 | - | 4.80 | 68,845 |
| History of Germany Quiz | 0 | - | 4.35 | 40,109 |
| Largest Islands of Greece | 0 | - | 4.57 | 39,574 |
| Olympian Gods Quiz | 0 | - | 4.96 | 456,867 |
| Ancient Greek Words | 0 | - | 4.90 | 97,228 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 398,897 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 48,559 |
| UK Cities Map Quiz | 0 | - | 4.94 | 432,875 |
| Counties of England Map Quiz | 0 | - | 4.97 | 286,451 |
| History of Scotland | 0 | - | 4.49 | 19,619 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 268,988 |
| Champions League Winners | 0 | - | 4.91 | 850,649 |
| European Diaspora - Top 11 Countries | 0 | - | 4.91 | 83,300 |
| 10 European Countries with the Most Tourists | 0 | - | 4.97 | 120,533 |
| Three Band Flags of Europe | 0 | - | 4.97 | 160,679 |
| Pixelated Europe Map | 0 | - | 4.90 | 109,241 |
| Monarchies of Europe | 0 | - | 4.88 | 86,860 |
| European Countries with One Border | 0 | - | 4.96 | 150,328 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 144,223 |
| Federal Subjects of Russia | 0 | - | 4.95 | 112,083 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 101,469 |
| French Inventions | 0 | - | 4.08 | 13,336 |
| History of Paris | 0 | - | 4.20 | 12,674 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.96 | 56,456 |
| Geography of Ancient Greece | 0 | - | 4.77 | 29,987 |
| Embarrassing Chapters in Italian History | 0 | - | 4.20 | 11,128 |
| Monaco Country Quiz | 0 | - | 4.45 | 37,498 |
| Netherlands Country Quiz | 0 | - | 4.53 | 72,834 |
| Nordic Cities Map Quiz | 0 | - | 4.72 | 85,105 |
| Portugal Country Quiz | 0 | - | 4.66 | 64,756 |
| The Portuguese Empire | 0 | - | 4.54 | 11,330 |
| Spain Country Quiz | 0 | - | 4.44 | 114,740 |
| Switzerland Country Quiz | 0 | - | 4.54 | 57,053 |
| United Kingdom A-Z | 0 | - | 4.53 | 80,814 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.50 | 36,450 |
| British Geography Multiple Choice | 0 | - | 4.41 | 41,007 |
| Counties of Wales | 0 | - | 4.61 | 33,474 |
| History of Russia Quiz | 0 | - | 4.48 | 29,842 |
| Countries That Border Russia | 0 | - | 4.98 | 425,473 |
| History of Austria | 0 | - | 4.68 | 16,371 |
| Austria Country Quiz | 0 | - | 4.55 | 54,068 |
| Belgium Country Quiz | 0 | - | 4.66 | 64,453 |
| France Country Quiz | 0 | - | 4.76 | 121,035 |
| Geography of the French Empire | 0 | - | 4.49 | 25,393 |
| The French Revolution | 0 | - | 4.45 | 21,908 |
| Countries Bordering France | 0 | - | 4.87 | 356,968 |
| History of France Quiz | 0 | - | 4.55 | 39,650 |
| French History Multiple Choice | 0 | - | 4.54 | 29,821 |
| Countries Bordering Germany | 0 | - | 4.99 | 340,273 |
| Greece Country Quiz | 0 | - | 4.72 | 59,708 |
| History of Ireland Quiz | 0 | - | 4.43 | 18,881 |
| History of Italy | 0 | - | 4.49 | 29,762 |
| Canary Islands | 0 | - | 4.60 | 16,543 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 93,191 |
| Switzerland Immigration by Country | 0 | - | 4.79 | 20,837 |
| British Spellings Quiz | 0 | - | 4.04 | 94,623 |
| British Groups of Things | 0 | - | 4.26 | 80,104 |
| UK Immigration by Country | 0 | - | 4.95 | 124,989 |
| United Kingdom Decoder | 0 | - | 4.27 | 38,722 |
| United Kingdom Country Quiz | 0 | - | 4.94 | 118,454 |
| Geography of Scotland | 0 | - | 4.62 | 19,558 |
| Former Dominions of the British Empire | 0 | - | 4.37 | 22,675 |
| All Champions League Teams Ever | 0 | - | 4.89 | 104,169 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 93,325 |
| Top 10 Coldest European Countries | 0 | - | 4.95 | 180,604 |
| Top 10 Hottest European Countries | 0 | - | 4.87 | 115,361 |
| Category Elimination - European Geography #1 | 0 | - | 4.97 | 200,328 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 246,480 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 142,490 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 188,049 |
| Name a Valid European Country #2 | 0 | - | 4.93 | 84,088 |
| Russia Country Quiz | 0 | - | 4.84 | 103,019 |
| Russian Inventions | 0 | - | 4.41 | 11,989 |
| Croatia Country Quiz | 0 | - | 4.81 | 37,174 |
| Figures from Greek Mythology | 0 | - | 4.92 | 169,284 |
| Countries Italy Declared War On | 0 | - | 4.79 | 39,899 |
| Ancient Roman Trivia #2 | 0 | - | 4.55 | 35,361 |
| Geography of the Roman Empire | 0 | - | 4.55 | 48,462 |
| Roman Names for Places | 0 | - | 4.66 | 41,433 |
| Byzantine History | 0 | - | 4.87 | 26,208 |
| Luxembourg Country Quiz | 0 | - | 4.74 | 29,852 |
| History of Spain Quiz | 0 | - | 4.33 | 19,559 |
| Geography of the Spanish Empire | 0 | - | 4.48 | 35,200 |
| Countries Closest to Spain | 0 | - | 4.95 | 205,622 |
| Most Common Surnames in the UK | 0 | - | 4.18 | 65,721 |
| Oldest Cities in the United Kingdom | 0 | - | 4.34 | 22,104 |
| Counties of the UK and Ireland | 0 | - | 4.97 | 103,684 |
| Wonderwall Lyrics | 0 | - | 4.22 | 68,706 |
| Embarrassing Chapters in British History | 0 | - | 4.28 | 30,268 |
| Houses of British Monarchs | 0 | - | 4.50 | 52,026 |
| History of London | 0 | - | 4.31 | 24,258 |
| Prime Ministers of the UK | 0 | - | 4.95 | 380,530 |
| World Capitals Closest to London | 0 | - | 4.90 | 93,299 |
| 50 Busiest Air Routes from London | 0 | - | 4.89 | 85,837 |
| 2025 Football League Teams | 0 | - | 4.94 | 344,295 |
| Councils of Scotland | 0 | - | 4.62 | 24,651 |
| Liechtenstein Country Quiz | 0 | - | 4.63 | 24,290 |
| Malta Country Quiz | 0 | - | 4.79 | 27,911 |
| San Marino Country Quiz | 0 | - | 4.65 | 25,923 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,163,742 |
| Deadliest U.S. Wars | 0 | - | 4.82 | 157,851 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 456,686 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 66,079 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 128,056 |
| Top 20 Football Clubs in Europe | 0 | - | 4.49 | 85,129 |
| European Countries NOT in NATO | 0 | - | 4.76 | 35,042 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.93 | 56,204 |
| Category Elimination - European Countries #1 | 0 | - | 4.88 | 76,505 |
| Countries that Border Poland | 0 | - | 4.99 | 158,427 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.94 | 75,841 |
| Countries With the Most Russian Speakers | 0 | - | 4.95 | 55,964 |
| Countries that Border Hungary | 0 | - | 4.98 | 96,104 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.82 | 30,916 |
| Moldova Country Quiz | 0 | - | 4.87 | 27,302 |
| Countries Bordering Serbia | 0 | - | 4.95 | 82,918 |
| Countries Bordering Austria | 0 | - | 4.97 | 109,919 |
| Countries that Visit France the Most | 0 | - | 4.84 | 39,841 |
| Countries Closest to Metropolitan France | 0 | - | 4.87 | 66,207 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 21,988 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.38 | 65,892 |
| Countries With the Most German Speakers | 0 | - | 4.88 | 51,935 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.55 | 55,716 |
