| Two Letter Roman Numerals | 0 | - | 4.97 | 55,659 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,784 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,058 |
| Ancient Greek Words | 0 | - | 4.92 | 110,784 |
| Byzantine History | 0 | - | 4.91 | 28,648 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,881 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 101,612 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,471 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,110 |
| Roman Emperors | 0 | - | 4.95 | 118,607 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,426 |
| Roman History by Picture | 0 | - | 4.46 | 26,351 |
| Name the English Monarchs | 0 | - | 4.92 | 498,395 |
| Prime Ministers of the UK | 0 | - | 4.96 | 435,011 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,148 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,052 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,506 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,536 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,194 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,100 |
| Mythology A-Z | 0 | - | 4.31 | 37,019 |
| Regions of Italy | 0 | - | 4.92 | 74,826 |
| History of Italy | 0 | - | 4.55 | 31,840 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,010 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,562 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,703 |
| Roman Names for Places | 0 | - | 4.62 | 57,913 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,737 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,569 |
| Italy Country Quiz | 0 | - | 4.82 | 122,324 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,516 |
| Italy A-Z | 0 | - | 4.49 | 57,787 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,386 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 124,846 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,407 |
| Europe Map Quiz | 0 | - | 5.00 | 4,734,057 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,057 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,965 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,499 |
| Name that Greek Letter | 0 | - | 4.94 | 321,824 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,495 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,430 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,503 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,186 |
| The Trojan War | 0 | - | 4.83 | 39,466 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,688 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,939 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,119 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,552 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,515 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,552 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,840 |
| Roman to Greek God | 0 | - | 4.52 | 122,285 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,457 |
| The Life of Julius Caesar | 0 | - | 4.39 | 38,973 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,528 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,581 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,004 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,278 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,435 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,331 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 51,991 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,191 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,228,371 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,646 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,717 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,783 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,389 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,547 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,530 |
| The Only European Country ... | 0 | - | 4.91 | 214,094 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,044 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,188 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,729 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,356 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,283 |
| Slavic Countries | 0 | - | 4.96 | 110,926 |
| History of Russia Quiz | 0 | - | 4.49 | 31,801 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,742 |
| Germany A-Z | 0 | - | 4.56 | 62,344 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,325 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,680 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,496 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,996 |
| Counties of England | 0 | - | 4.97 | 789,883 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,563 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,821 |
| Middle Earth Geography | 0 | - | 4.56 | 39,555 |
| Lord of the Rings Trivia | 0 | - | 4.53 | 80,887 |
| Members of the Fellowship of the Ring | 0 | - | 4.74 | 45,561 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,201 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,476 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,413 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,093 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,498 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,006 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,896 |
| Monarchies of Europe | 0 | - | 4.90 | 97,393 |
| European Countries with One Border | 0 | - | 4.97 | 181,729 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,633 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,358 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,257 |
| Countries That Border Russia | 0 | - | 4.98 | 459,157 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,268 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,311 |
| Countries Bordering France | 0 | - | 4.83 | 399,886 |
| History of France | 0 | - | 4.59 | 56,177 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,823 |
| States of Germany | 0 | - | 4.96 | 150,276 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,103 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,265 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 87,205 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,048 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,894 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,477 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,325 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,095 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,211 |
| English Royal Consorts | 0 | - | 4.37 | 37,198 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,888 |
| Geography of the British Empire | 0 | - | 4.48 | 39,506 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,631 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,611 |
| Champions League Winners | 0 | - | 4.92 | 997,303 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,000 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,917 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,216 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,422 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,705 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,658,738 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,382 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,099 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,320 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,178 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,818 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,897 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,235 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,389 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,882 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,165 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,750 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,422 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,332 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,138 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,357 |
| Countries that Border Poland | 0 | - | 4.99 | 171,447 |
| Russia Country Quiz | 0 | - | 4.85 | 113,709 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,420 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,705 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,902 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,751 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,076 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,816 |
| History of Austria | 0 | - | 4.70 | 17,765 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,541 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,842 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,326 |
| Departments of France | 0 | - | 4.93 | 52,928 |
| Geography of the French Empire | 0 | - | 4.48 | 26,946 |
| The French Revolution | 0 | - | 4.46 | 23,799 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,574 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,842 |
| Germany Country Quiz | 0 | - | 4.82 | 156,692 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,254 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,391 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,526 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,799 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,783 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,968 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,463 |
| Counties of Ireland | 0 | - | 4.92 | 193,235 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,185 |
| Italian History A-Z | 0 | - | 4.21 | 17,528 |
| Famous Italians by Picture | 0 | - | 4.05 | 21,856 |
| Rome A-Z | 0 | - | 4.39 | 24,409 |
| History of The Netherlands | 0 | - | 4.46 | 17,326 |
| The Vikings! | 0 | - | 4.46 | 28,253 |
| The Portuguese Empire | 0 | - | 4.54 | 11,997 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,150 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,733 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,041 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,430 |
| Arthurian Legend | 0 | - | 4.33 | 25,053 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,440 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,791 |
| Lord of the Rings - Races | 0 | - | 4.24 | 58,441 |
| The Ultimate LOTR Character Quiz - The Books | 0 | - | 4.61 | 20,510 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,585 |
| Medieval English History | 0 | - | 4.53 | 43,334 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,975 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,850 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,698 |
| Doctor Who Actors | 0 | - | 4.61 | 17,858 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,807 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,830 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,552 |
| England or Wales? | 0 | - | 4.94 | 45,363 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,646 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,358 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,313 |
