| Name the English Monarchs | 0 | - | 4.92 | 497,735 |
| Monarchies of Europe | 0 | - | 4.90 | 97,280 |
| Departments of France | 0 | - | 4.93 | 52,749 |
| Countries Bordering France | 0 | - | 4.83 | 398,556 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,507 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,505 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,782 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,336 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,458 |
| Kings of France Quiz | 0 | - | 4.20 | 32,548 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,289 |
| The Trojan War | 0 | - | 4.83 | 39,419 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,486 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,026 |
| Roman Emperors | 0 | - | 4.95 | 118,412 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,875 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,377 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,334 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,063 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,973 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,079 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,664 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,509 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,931 |
| English Royal Consorts | 0 | - | 4.37 | 37,155 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,601 |
| Monarchies of Asia | 0 | - | 4.97 | 70,580 |
| Europe Map Quiz | 0 | - | 5.00 | 4,729,935 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,931 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,211 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,087 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,125 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,421 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,090 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,139 |
| Germany Country Quiz | 0 | - | 4.82 | 156,483 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,108 |
| Italy Country Quiz | 0 | - | 4.82 | 122,150 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,322 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,032 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,355 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,929 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,602 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,202 |
| England or Wales? | 0 | - | 4.94 | 45,305 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,208 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,068 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,934 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,748 |
| France Country Quiz | 0 | - | 4.70 | 133,791 |
| Geography of the French Empire | 0 | - | 4.48 | 26,923 |
| The French Revolution | 0 | - | 4.46 | 23,773 |
| History of France | 0 | - | 4.59 | 55,976 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,211 |
| Counties of Ireland | 0 | - | 4.92 | 192,974 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,424 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,258 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,232 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,792 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,542 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,687 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,742 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,374 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,574 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,330 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,760 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,765 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,669 |
| Name that Greek Letter | 0 | - | 4.94 | 321,584 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,848 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,646 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,442 |
| British Monopoly Board | 0 | - | 4.52 | 41,024 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,603 |
| Medieval English History | 0 | - | 4.53 | 43,307 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,427 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,893 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,224 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,469 |
| The Only European Country ... | 0 | - | 4.91 | 213,708 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,457 |
| History of Russia Quiz | 0 | - | 4.49 | 31,784 |
| Countries that Beat France | 0 | - | 4.49 | 75,149 |
| French History A-Z | 0 | - | 4.17 | 18,644 |
| French History Multiple Choice | 0 | - | 4.55 | 32,867 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,866 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,424 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,200 |
| History of Italy | 0 | - | 4.55 | 31,809 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,527 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,656 |
| Roman Names for Places | 0 | - | 4.62 | 57,862 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,476 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,974 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,376 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,948 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,826 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 51,933 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,225,807 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,418 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,671 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,256 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,229 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,447 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,714 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,760 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,215 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,153 |
| Slavic Countries | 0 | - | 4.96 | 110,819 |
| 20 Questions About France | 0 | - | 4.11 | 32,333 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,747 |
| Ancient Greek Words | 0 | - | 4.92 | 110,636 |
| Italian History A-Z | 0 | - | 4.21 | 17,379 |
| Spanish History A-Z | 0 | - | 4.36 | 19,028 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,643 |
| Counties of England | 0 | - | 4.97 | 788,900 |
| The Reign of Queen Elizabeth II | 0 | - | 4.35 | 35,673 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,659 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,735 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,091 |
| Regions of France | 0 | - | 4.78 | 119,168 |
| France Immigration by Country | 0 | - | 4.72 | 75,942 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,411 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,981 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,396 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,599 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,037 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,057 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,387 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,106 |
| British History A-Z #1 | 0 | - | 4.45 | 45,795 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,074 |
| History of Scotland | 0 | - | 4.51 | 20,997 |
| Champions League Winners | 0 | - | 4.92 | 995,911 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,303 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,017 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,318 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,802 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,184 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,757 |
| European Countries with One Border | 0 | - | 4.97 | 181,569 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,477 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,184 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,884 |
| Countries That Border Russia | 0 | - | 4.98 | 458,796 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,153 |
| History of Austria | 0 | - | 4.70 | 17,743 |
| Austria Country Quiz | 0 | - | 4.57 | 59,321 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,206 |
| French Inventions | 0 | - | 4.08 | 13,863 |
| History of Paris | 0 | - | 4.24 | 13,612 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,645 |
| States of Germany | 0 | - | 4.96 | 149,952 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,381 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,990 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,922 |
| Greece Country Quiz | 0 | - | 4.74 | 65,736 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,419 |
| Regions of Italy | 0 | - | 4.92 | 74,656 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,109 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,469 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,228 |
| Netherlands Country Quiz | 0 | - | 4.50 | 79,937 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,785 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,741 |
| The Vikings! | 0 | - | 4.45 | 28,241 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,680 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,320 |
| The Portuguese Empire | 0 | - | 4.54 | 11,987 |
| Spain Country Quiz | 0 | - | 4.45 | 127,562 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,267 |
| Switzerland Country Quiz | 0 | - | 4.51 | 62,922 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,098 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,879 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,196 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,559 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,166 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,748 |
| Geography of the British Empire | 0 | - | 4.48 | 39,467 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,336 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,400 |
| Counties of Wales | 0 | - | 4.63 | 38,884 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,420 |
| Battle to Country | 0 | - | 4.91 | 52,492 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,827 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,339 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,061 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,053 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,506 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,024 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,188 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,135 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,600 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,170 |
| Russia Country Quiz | 0 | - | 4.85 | 113,606 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,827 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,018 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,621 |
| German History A-Z | 0 | - | 4.49 | 24,209 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,857 |
