| Name the English Monarchs | 0 | - | 4.91 | 506,729 |
| The Trojan War | 0 | - | 4.83 | 40,002 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,012 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,611 |
| Roman Emperors | 0 | - | 4.95 | 121,260 |
| Countries Bordering France | 0 | - | 4.83 | 405,005 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,847 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,159 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,494 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,692 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,413 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,904 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,158 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,468 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,246 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,051 |
| Medieval English History | 0 | - | 4.53 | 43,661 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,417 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,573 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,835 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,886 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,618 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,682 |
| Kings of France Quiz | 0 | - | 4.21 | 32,935 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,837 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,950 |
| Departments of France | 0 | - | 4.93 | 55,216 |
| French History Multiple Choice | 0 | - | 4.55 | 33,247 |
| Germany Country Quiz | 0 | - | 4.82 | 158,880 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,103 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,937 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,339 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,854 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,273 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,083 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,752 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,316 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,219 |
| Roman Names for Places | 0 | - | 4.62 | 58,721 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,518 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,901 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,829 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,105 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,976 |
| Houses of British Monarchs | 0 | - | 4.54 | 65,970 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,328 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,094 |
| England or Wales? | 0 | - | 4.94 | 45,978 |
| Europe Map Quiz | 0 | - | 5.00 | 4,789,351 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,759 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,102 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,961 |
| France Country Quiz | 0 | - | 4.70 | 135,690 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,739 |
| Counties of Ireland | 0 | - | 4.92 | 197,395 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,272 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,428 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,169 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,454 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,380 |
| History of Scotland | 0 | - | 4.51 | 21,177 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,085 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,321 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,023 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,360 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,586 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,177 |
| Name that Greek Letter | 0 | - | 4.93 | 325,053 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,204 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,267 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,899 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,367 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,422 |
| English Royal Consorts | 0 | - | 4.38 | 37,536 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,312 |
| Countries that Beat France | 0 | - | 4.48 | 76,403 |
| French History A-Z | 0 | - | 4.27 | 25,150 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,885 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,621 |
| Countries Italy Declared War On | 0 | - | 4.75 | 45,141 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,902 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,258,853 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,058 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,224 |
| The Only European Country ... | 0 | - | 4.91 | 219,163 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,596 |
| History of Russia Quiz | 0 | - | 4.47 | 32,009 |
| 20 Questions About France | 0 | - | 4.11 | 32,471 |
| Ancient Greek Words | 0 | - | 4.93 | 112,520 |
| History of Italy | 0 | - | 4.55 | 32,157 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,829 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,430 |
| Counties of England | 0 | - | 4.97 | 803,238 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,103 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,829 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,406 |
| History of London | 0 | - | 4.33 | 26,274 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,076 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,900 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,604 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,116 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,923 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,803 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,843 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,991 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,227 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,816 |
| Slavic Countries | 0 | - | 4.96 | 112,407 |
| Countries that have Won the Most Eurovisions | 0 | - | 4.56 | 102,769 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,425 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,244 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,416 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,932 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,528 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,531 |
| Imagine Lyrics | 0 | - | 4.53 | 43,544 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,875 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,566 |
| Champions League Winners | 0 | - | 4.92 | 1,016,569 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,010 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,944 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,841 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,866 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,569 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,643 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,504 |
| Monarchies of Europe | 0 | - | 4.90 | 98,907 |
| European Countries with One Border | 0 | - | 4.97 | 183,854 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,574 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,975 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,986 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,924 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,999 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,778 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,936 |
| Russia Country Quiz | 0 | - | 4.83 | 115,340 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,596 |
| Countries That Border Russia | 0 | - | 4.98 | 464,588 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,766 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,496 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,601 |
| History of Austria | 0 | - | 4.70 | 17,977 |
| Austria Country Quiz | 0 | - | 4.57 | 60,066 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,269 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,372 |
| Geography of the French Empire | 0 | - | 4.45 | 27,220 |
| The French Revolution | 0 | - | 4.47 | 24,149 |
| History of France | 0 | - | 4.61 | 57,643 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,844 |
| States of Germany | 0 | - | 4.95 | 154,605 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,561 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,714 |
| Greece Country Quiz | 0 | - | 4.74 | 66,657 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,979 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,938 |
| History of Ireland | 0 | - | 4.39 | 31,441 |
| Regions of Italy | 0 | - | 4.92 | 77,125 |
| Italy Country Quiz | 0 | - | 4.77 | 124,083 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,952 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,697 |
| Netherlands Country Quiz | 0 | - | 4.52 | 80,957 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,822 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,748 |
| The Vikings! | 0 | - | 4.46 | 28,409 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,395 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,333 |
| The Portuguese Empire | 0 | - | 4.58 | 12,107 |
| Spain Country Quiz | 0 | - | 4.44 | 129,283 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,368 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,965 |
| Switzerland Country Quiz | 0 | - | 4.52 | 63,651 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,780 |
| UK Immigration by Country | 0 | - | 4.94 | 141,753 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,065 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,552 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,387 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,862 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,467 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,282 |
| Geography of the British Empire | 0 | - | 4.48 | 39,850 |
| Animals in British History | 0 | - | 4.43 | 26,103 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,843 |
| Counties of Wales | 0 | - | 4.63 | 39,636 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,218 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,573 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,727,074 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,822 |
| O Canada Lyrics | 0 | - | 4.47 | 51,070 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,364 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,746 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,971 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,120 |
| Countries that Border Poland | 0 | - | 4.99 | 173,208 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,288 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,942 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,023 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,116 |
| Countries Two Borders Away From France | 0 | - | 4.37 | 27,785 |
| France True or False? | 0 | - | 4.44 | 40,081 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,999 |
