| Two Letter Roman Numerals | 0 | - | 4.97 | 56,410 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,961 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,707 |
| Ancient Greek Words | 0 | - | 4.93 | 112,237 |
| Byzantine History | 0 | - | 4.91 | 28,987 |
| Byzantine Emperors | 0 | - | 4.92 | 14,498 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,042 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,478 |
| Roman Emperors | 0 | - | 4.95 | 120,877 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,192 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,524 |
| Roman History by Picture | 0 | - | 4.46 | 26,549 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,921 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,352 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,339 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,081 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,668 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,485 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,618 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,379 |
| Regions of Italy | 0 | - | 4.92 | 76,682 |
| History of Italy | 0 | - | 4.55 | 32,107 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 44,056 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,153 |
| Roman Names for Places | 0 | - | 4.62 | 58,607 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,016 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,700 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,517 |
| Name the English Monarchs | 0 | - | 4.91 | 505,380 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,609 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,693 |
| Name that Greek Letter | 0 | - | 4.93 | 324,659 |
| Mythology A-Z | 0 | - | 4.31 | 37,350 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,161 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,051 |
| Prime Ministers of the UK | 0 | - | 4.95 | 441,360 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,166 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,691 |
| The Trojan War | 0 | - | 4.83 | 39,930 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,669 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,559 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,025 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,235 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,703 |
| Roman to Greek God | 0 | - | 4.52 | 123,209 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,125 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,156 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,619 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,861 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,561 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,662 |
| Premier League Relegated Teams | 0 | - | 4.81 | 127,471 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,268 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,724 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,614 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,731 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,282 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,833 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,208 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,607 |
| The Only European Country ... | 0 | - | 4.91 | 218,338 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,198 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 174,919 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,145 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,937 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,641 |
| Slavic Countries | 0 | - | 4.96 | 112,183 |
| History of Russia Quiz | 0 | - | 4.47 | 31,985 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,781 |
| Italy A-Z | 0 | - | 4.49 | 58,638 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,781 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,379 |
| Counties of England | 0 | - | 4.97 | 801,247 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,039 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,768 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,293 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,645 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,065 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,557 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,319 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,231 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,199 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,280 |
| Monarchies of Europe | 0 | - | 4.90 | 98,641 |
| European Countries with One Border | 0 | - | 4.97 | 183,504 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,243 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,264 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,907 |
| Countries That Border Russia | 0 | - | 4.98 | 463,896 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,321 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,358 |
| Countries Bordering France | 0 | - | 4.83 | 404,344 |
| History of France | 0 | - | 4.61 | 57,463 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,544 |
| States of Germany | 0 | - | 4.95 | 153,983 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,529 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,504 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,323 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 87,984 |
| Italy Country Quiz | 0 | - | 4.77 | 123,880 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,145 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,649 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,998 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,607 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,376 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,435 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,112 |
| Geography of the British Empire | 0 | - | 4.48 | 39,813 |
| Champions League Winners | 0 | - | 4.92 | 1,013,125 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,718,756 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,569 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,613 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,558 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,286 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,627 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,779 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,124 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,429 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,421 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,794 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,710 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,600 |
| Countries that Border Poland | 0 | - | 4.99 | 172,939 |
| Russia Country Quiz | 0 | - | 4.83 | 115,137 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,131 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,272 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,618 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,888 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,504 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,908 |
| History of Austria | 0 | - | 4.70 | 17,950 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,007 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,874 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,833 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,511 |
| Departments of France | 0 | - | 4.93 | 54,854 |
| Geography of the French Empire | 0 | - | 4.45 | 27,194 |
| The French Revolution | 0 | - | 4.47 | 24,108 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,069 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,386 |
| Germany Country Quiz | 0 | - | 4.83 | 158,561 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,896 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,541 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,079 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,172 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,002 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,143 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,786 |
| Counties of Ireland | 0 | - | 4.92 | 196,826 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,870 |
| Italian History A-Z | 0 | - | 4.16 | 17,879 |
| History of The Netherlands | 0 | - | 4.46 | 17,529 |
| The Vikings! | 0 | - | 4.46 | 28,391 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,319 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,584 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,284 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,793 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,461 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,944 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,906 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,874 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.32 | 62,459 |
| Medieval English History | 0 | - | 4.53 | 43,618 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,272 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,052 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,954 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,178 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,805 |
| England or Wales? | 0 | - | 4.94 | 45,893 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,625 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,331 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,307 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,386 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,692 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,993 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,970 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,574 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,087 |
| Germany A-Z | 0 | - | 4.56 | 62,798 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,848 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,089 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,433 |
| History of Germany | 0 | - | 4.39 | 52,945 |
| Holy Roman Empire Countries | 0 | - | 4.77 | 54,877 |
| Word Chain - Greek and Roman Mythology | 0 | - | 4.50 | 56,900 |
| Iceland... or Ireland? | 0 | - | 4.74 | 57,176 |
| Which City in Italy? | 0 | - | 4.68 | 90,445 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,953 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,142 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,726 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,917 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,225 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,929 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,763 |
| Roald Dahl Books | 0 | - | 4.45 | 34,114 |
| Shakespearean Phrases | 0 | - | 4.57 | 36,842 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.56 | 34,456 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,371 |
| Middle Earth Geography | 0 | - | 4.56 | 39,924 |
