| Two Letter Roman Numerals | 0 | - | 4.97 | 56,130 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,796 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,469 |
| Ancient Greek Words | 0 | - | 4.93 | 111,594 |
| Byzantine History | 0 | - | 4.91 | 28,867 |
| Byzantine Emperors | 0 | - | 4.92 | 14,085 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,086 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 102,885 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,602 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,524 |
| Roman Emperors | 0 | - | 4.95 | 120,032 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,873 |
| Roman History by Picture | 0 | - | 4.46 | 26,465 |
| Name the English Monarchs | 0 | - | 4.91 | 502,609 |
| Prime Ministers of the UK | 0 | - | 4.95 | 438,923 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,940 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,005 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,222 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 81,749 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,663 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,994 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,876 |
| Mythology A-Z | 0 | - | 4.31 | 37,217 |
| Regions of Italy | 0 | - | 4.92 | 75,863 |
| History of Italy | 0 | - | 4.55 | 31,973 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,327 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,743 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,924 |
| Roman Names for Places | 0 | - | 4.62 | 58,281 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,256 |
| Italy Country Quiz | 0 | - | 4.80 | 123,396 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,360 |
| Italy A-Z | 0 | - | 4.49 | 58,303 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,545 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,869 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,661 |
| Europe Map Quiz | 0 | - | 5.00 | 4,762,722 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,052 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,299 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,387 |
| Name that Greek Letter | 0 | - | 4.93 | 323,442 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,859 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,034 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,169 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,490 |
| The Trojan War | 0 | - | 4.83 | 39,723 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,834 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,482 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,183 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,609 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,445 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,472 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,468 |
| Roman to Greek God | 0 | - | 4.52 | 122,811 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,963 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,085 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,781 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,343 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,863 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,252 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,706 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,791 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,660 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,349 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,016 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,244,006 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,640 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,227 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,653 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,200 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,689 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,148 |
| The Only European Country ... | 0 | - | 4.91 | 216,601 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,499 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,817 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,112 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,277 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,183 |
| Slavic Countries | 0 | - | 4.96 | 111,652 |
| History of Russia Quiz | 0 | - | 4.47 | 31,917 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,954 |
| Germany A-Z | 0 | - | 4.56 | 62,605 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,612 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,785 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,659 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,235 |
| Counties of England | 0 | - | 4.97 | 796,651 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,862 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,085 |
| Middle Earth Geography | 0 | - | 4.56 | 39,809 |
| Lord of the Rings Trivia | 0 | - | 4.53 | 81,469 |
| Members of the Fellowship of the Ring | 0 | - | 4.74 | 45,829 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,252 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,924 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,848 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,512 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,295 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,753 |
| Monarchies of Europe | 0 | - | 4.90 | 98,139 |
| European Countries with One Border | 0 | - | 4.97 | 182,768 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,567 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,536 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,132 |
| Countries That Border Russia | 0 | - | 4.98 | 461,716 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,892 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,420 |
| Countries Bordering France | 0 | - | 4.83 | 402,527 |
| History of France | 0 | - | 4.59 | 56,973 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,807 |
| States of Germany | 0 | - | 4.96 | 152,556 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,030 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,387 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 87,765 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,104 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,146 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,931 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,200 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 93,995 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,350 |
| English Royal Consorts | 0 | - | 4.38 | 37,351 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,464 |
| Geography of the British Empire | 0 | - | 4.48 | 39,671 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,738 |
| Champions League Winners | 0 | - | 4.92 | 1,006,637 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,856 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,593 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,266 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,589 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,938 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,698,416 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,791 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,529 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,110 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,995 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,104 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,382 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,716 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,390 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,439 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,808 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,242 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,805 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,116 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,979 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,707 |
| Countries that Border Poland | 0 | - | 4.99 | 172,272 |
| Russia Country Quiz | 0 | - | 4.85 | 114,480 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,845 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,811 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,336 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,220 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,342 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,392 |
| History of Austria | 0 | - | 4.70 | 17,861 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,767 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,683 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,314 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,734 |
| Departments of France | 0 | - | 4.93 | 54,091 |
| Geography of the French Empire | 0 | - | 4.45 | 27,059 |
| The French Revolution | 0 | - | 4.47 | 23,929 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,869 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,177 |
| Germany Country Quiz | 0 | - | 4.83 | 157,840 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,319 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,667 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,993 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,913 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,659 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,658 |
| Counties of Ireland | 0 | - | 4.92 | 195,246 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,034 |
| Italian History A-Z | 0 | - | 4.21 | 17,707 |
| Famous Italians by Picture | 0 | - | 4.06 | 21,943 |
| Rome A-Z | 0 | - | 4.39 | 24,480 |
| History of The Netherlands | 0 | - | 4.46 | 17,433 |
| The Vikings! | 0 | - | 4.46 | 28,343 |
| The Portuguese Empire | 0 | - | 4.58 | 12,064 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,921 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,644 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,163 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,971 |
| Arthurian Legend | 0 | - | 4.33 | 25,109 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,598 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,678 |
| Lord of the Rings - Races | 0 | - | 4.25 | 58,799 |
| The Ultimate LOTR Character Quiz - The Books | 0 | - | 4.61 | 20,736 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 62,075 |
| Medieval English History | 0 | - | 4.53 | 43,507 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,143 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,959 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,838 |
| Doctor Who Actors | 0 | - | 4.61 | 17,925 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,648 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,836 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,696 |
| England or Wales? | 0 | - | 4.94 | 45,686 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,337 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,222 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 134,391 |
