| The Trojan War | 0 | - | 4.83 | 39,419 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,486 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,664 |
| Name that Greek Letter | 0 | - | 4.94 | 321,581 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,760 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,765 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,024 |
| Roman Emperors | 0 | - | 4.95 | 118,412 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,865 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,423 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,196 |
| Name the English Monarchs | 0 | - | 4.92 | 497,731 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,419 |
| 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 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,287 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,738 |
| Medieval English History | 0 | - | 4.53 | 43,307 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,875 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,375 |
| 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 |
| Countries Bordering France | 0 | - | 4.85 | 398,547 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,930 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,509 |
| Ancient Greek Words | 0 | - | 4.92 | 110,636 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,109 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,289 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,948 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,826 |
| Europe Map Quiz | 0 | - | 5.00 | 4,729,917 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,139 |
| Departments of France | 0 | - | 4.93 | 52,749 |
| Germany Country Quiz | 0 | - | 4.82 | 156,482 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 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 | 151,031 |
| 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 | 45,304 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,124 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,507 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,747 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,505 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,782 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,211 |
| Greece Country Quiz | 0 | - | 4.74 | 65,736 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,981 |
| Counties of Ireland | 0 | - | 4.92 | 192,973 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,424 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,257 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,232 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,542 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,106 |
| History of Scotland | 0 | - | 4.51 | 20,997 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,686 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,742 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,068 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,374 |
| Kings of France Quiz | 0 | - | 4.20 | 32,548 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,663 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,330 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,855 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,930 |
| 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 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,162 |
| English Royal Consorts | 0 | - | 4.37 | 37,155 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,600 |
| 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 | 113,468 |
| The Only European Country ... | 0 | - | 4.91 | 213,705 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,453 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,225,794 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,416 |
| History of Russia Quiz | 0 | - | 4.49 | 31,784 |
| French History Multiple Choice | 0 | - | 4.55 | 32,867 |
| Countries that Beat Greece | 0 | - | 4.52 | 48,573 |
| History of Italy | 0 | - | 4.55 | 31,809 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,476 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,974 |
| Counties of England | 0 | - | 4.97 | 788,895 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,376 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,607 |
| History of London | 0 | - | 4.33 | 26,096 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,074 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,656 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,670 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,256 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,228 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,445 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,713 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,759 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,214 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,153 |
| Slavic Countries | 0 | - | 4.96 | 110,817 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,007 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,382 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,598 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,057 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,602 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,427 |
| Champions League Winners | 0 | - | 4.92 | 995,908 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,303 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,015 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,318 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,802 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,757 |
| Monarchies of Europe | 0 | - | 4.90 | 97,280 |
| European Countries with One Border | 0 | - | 4.97 | 181,568 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,468 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,184 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,882 |
| Countries That Border Russia | 0 | - | 4.98 | 458,794 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,152 |
| History of Austria | 0 | - | 4.70 | 17,743 |
| Austria Country Quiz | 0 | - | 4.57 | 59,321 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,206 |
| France Country Quiz | 0 | - | 4.70 | 133,791 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,079 |
| Geography of the French Empire | 0 | - | 4.48 | 26,923 |
| The French Revolution | 0 | - | 4.46 | 23,773 |
| History of France | 0 | - | 4.59 | 55,975 |
| French History A-Z | 0 | - | 4.17 | 18,644 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,645 |
| States of Germany | 0 | - | 4.96 | 149,951 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,381 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,990 |
| Regions of Italy | 0 | - | 4.92 | 74,656 |
| 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 | 43,784 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,740 |
| 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 | 38,558 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,165 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,747 |
| Geography of the British Empire | 0 | - | 4.48 | 39,467 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,400 |
| Counties of Wales | 0 | - | 4.63 | 38,884 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,826 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,652,413 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,208 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,211 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,087 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,777 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,821 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,775 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,419 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,132 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,089 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,933 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,596 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,169 |
| Countries that Border Poland | 0 | - | 4.99 | 171,300 |
| Russia Country Quiz | 0 | - | 4.85 | 113,606 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,359 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,348 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,827 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,670 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,018 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,710 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,621 |
| German Inventions | 0 | - | 3.91 | 30,179 |
| Embarrassing Chapters in German History | 0 | - | 3.41 | 12,566 |
| Roman to Greek God | 0 | - | 4.52 | 122,176 |
| History of Ireland | 0 | - | 4.39 | 30,812 |
| Italian History A-Z | 0 | - | 4.21 | 17,379 |
| The Life of Julius Caesar | 0 | - | 4.39 | 38,949 |
| Roman History by Picture | 0 | - | 4.46 | 26,336 |
| Byzantine History | 0 | - | 4.91 | 28,606 |
| History of The Netherlands | 0 | - | 4.46 | 17,305 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,415 |
| Finland Country Quiz | 0 | - | 4.50 | 59,092 |
| Norway Country Quiz | 0 | - | 4.44 | 76,599 |
| Iceland Country Quiz | 0 | - | 4.69 | 42,848 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,731 |
| Spanish History A-Z | 0 | - | 4.36 | 19,028 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,058 |
| UK Immigration by Country | 0 | - | 4.94 | 139,553 |
| Arthurian Legend | 0 | - | 4.33 | 25,049 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,080 |
| British Monopoly Board | 0 | - | 4.52 | 41,024 |
