| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,157 |
| Roman Emperors | 0 | - | 4.95 | 118,775 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,715 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,345 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,581 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,736 |
| Roman Names for Places | 0 | - | 4.62 | 57,955 |
| Ancient Greek Words | 0 | - | 4.92 | 110,898 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,848 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,091 |
| Roman History by Picture | 0 | - | 4.46 | 26,366 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,389 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,219 |
| Name that Greek Letter | 0 | - | 4.94 | 322,059 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,120 |
| The Trojan War | 0 | - | 4.83 | 39,490 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,851 |
| The Life of Julius Caesar | 0 | - | 4.39 | 38,990 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,637 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,677 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,493 |
| Byzantine History | 0 | - | 4.91 | 28,663 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,211 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,643 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,674 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,311 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,200 |
| Regions of Italy | 0 | - | 4.92 | 74,943 |
| History of Italy | 0 | - | 4.55 | 31,861 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 101,744 |
| Italy Country Quiz | 0 | - | 4.82 | 122,441 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,605 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,404 |
| Name the English Monarchs | 0 | - | 4.92 | 498,977 |
| Europe Map Quiz | 0 | - | 5.00 | 4,738,141 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,398 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,556 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,617 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,502 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,234 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,657 |
| Prime Ministers of the UK | 0 | - | 4.96 | 435,526 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,833 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,220 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,821 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,803 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,053 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,005 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,752 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,060 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,489 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,476 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,808 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,552 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,561 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,061 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 67,619 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,450 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,230,376 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,600 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,933 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,917 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,495 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,841 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,624 |
| The Only European Country ... | 0 | - | 4.91 | 214,460 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,428 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,723 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,928 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,476 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,358 |
| Slavic Countries | 0 | - | 4.96 | 111,034 |
| History of Russia Quiz | 0 | - | 4.49 | 31,813 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,358 |
| Mythology A-Z | 0 | - | 4.31 | 37,054 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,690 |
| Iceland... or Ireland? | 0 | - | 4.74 | 56,831 |
| Italy A-Z | 0 | - | 4.49 | 57,858 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,520 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,028 |
| Counties of England | 0 | - | 4.97 | 790,697 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,632 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.57 | 34,237 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,422 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,205 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,565 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,148 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,510 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,185 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,623 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,157 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,994 |
| Monarchies of Europe | 0 | - | 4.90 | 97,497 |
| European Countries with One Border | 0 | - | 4.97 | 181,849 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,745 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,502 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,607 |
| Countries That Border Russia | 0 | - | 4.98 | 459,708 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,339 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,466 |
| Countries Bordering France | 0 | - | 4.83 | 400,456 |
| History of France | 0 | - | 4.59 | 56,349 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,958 |
| States of Germany | 0 | - | 4.96 | 150,565 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,181 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,012 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,516 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,441 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,054 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,971 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,651 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,505 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,180 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,231 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,967 |
| Geography of the British Empire | 0 | - | 4.48 | 39,531 |
| Champions League Winners | 0 | - | 4.92 | 998,327 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,100 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,663,781 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,498 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,406 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,281 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,848 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 137,960 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,973 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,038 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,636 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,552 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,179 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,619 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,516 |
| Countries that Border Poland | 0 | - | 4.99 | 171,573 |
| Russia Country Quiz | 0 | - | 4.85 | 113,818 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,468 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,992 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,974 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,810 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,114 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,898 |
| History of Austria | 0 | - | 4.70 | 17,777 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,569 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,912 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,431 |
| Departments of France | 0 | - | 4.93 | 53,035 |
| Geography of the French Empire | 0 | - | 4.45 | 26,963 |
| The French Revolution | 0 | - | 4.46 | 23,826 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,617 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,888 |
| French History Multiple Choice | 0 | - | 4.55 | 32,906 |
| Germany Country Quiz | 0 | - | 4.82 | 156,839 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,368 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,405 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,842 |
| Roman to Greek God | 0 | - | 4.52 | 122,351 |
| Counties of Ireland | 0 | - | 4.92 | 193,526 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,289 |
| Italian History A-Z | 0 | - | 4.21 | 17,592 |
| History of The Netherlands | 0 | - | 4.46 | 17,342 |
| The Vikings! | 0 | - | 4.46 | 28,264 |
| The Portuguese Empire | 0 | - | 4.54 | 12,006 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,231 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,837 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,058 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,916 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,566 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,049 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,648 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,378 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,639 |
| Medieval English History | 0 | - | 4.53 | 43,351 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,997 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,864 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,909 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,888 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,579 |
| England or Wales? | 0 | - | 4.94 | 45,405 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,819 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,118 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,065 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,013 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,673 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,602 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,464 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,709 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,765 |
| Germany A-Z | 0 | - | 4.56 | 62,389 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,908 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,594 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,590 |
| History of Germany | 0 | - | 4.39 | 52,668 |
| Holy Roman Empire Countries | 0 | - | 4.77 | 54,704 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,301 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 87,243 |
| Word Chain - Greek and Roman Mythology | 0 | - | 4.50 | 56,247 |
| Which City in Italy? | 0 | - | 4.64 | 89,066 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,988 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,427 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,815 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,561 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,567 |
