| Two Letter Roman Numerals | 0 | - | 4.97 | 56,283 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,971 |
| Ancient Greek Words | 0 | - | 4.93 | 111,930 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,568 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,655 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,660 |
| Roman Emperors | 0 | - | 4.95 | 120,424 |
| Roman History by Picture | 0 | - | 4.46 | 26,502 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,022 |
| Byzantine History | 0 | - | 4.91 | 28,920 |
| Byzantine Emperors | 0 | - | 4.92 | 14,375 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,235 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,650 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,104 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,010 |
| Name that Greek Letter | 0 | - | 4.93 | 324,202 |
| The Trojan War | 0 | - | 4.83 | 39,804 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,275 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,844 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,207 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,537 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,773 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,538 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,128 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,345 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,158 |
| Regions of Italy | 0 | - | 4.92 | 76,272 |
| History of Italy | 0 | - | 4.55 | 32,059 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,793 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,995 |
| Roman Names for Places | 0 | - | 4.62 | 58,411 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,684 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,620 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,245 |
| Name the English Monarchs | 0 | - | 4.91 | 504,069 |
| Europe Map Quiz | 0 | - | 5.00 | 4,772,019 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,410 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,763 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,031 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,374 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,162 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,127 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,591 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,427 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,664 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,206 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,106 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,910 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,123 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,435 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,108 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,127 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,506 |
| Premier League Relegated Teams | 0 | - | 4.81 | 126,950 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,623 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,248,977 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,967 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,733 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,953 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,459 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,437 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,370 |
| The Only European Country ... | 0 | - | 4.91 | 217,457 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,382 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,236 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,622 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,591 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,434 |
| Slavic Countries | 0 | - | 4.96 | 111,907 |
| History of Russia Quiz | 0 | - | 4.47 | 31,957 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,694 |
| Mythology A-Z | 0 | - | 4.31 | 37,291 |
| Italy A-Z | 0 | - | 4.49 | 58,454 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,723 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,301 |
| Counties of England | 0 | - | 4.97 | 799,072 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,961 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,726 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,279 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,624 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,303 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,957 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,058 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,877 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,750 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,012 |
| Monarchies of Europe | 0 | - | 4.90 | 98,366 |
| European Countries with One Border | 0 | - | 4.97 | 183,149 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,919 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 86,939 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,064 |
| Countries That Border Russia | 0 | - | 4.98 | 462,883 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,118 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,883 |
| Countries Bordering France | 0 | - | 4.83 | 403,611 |
| History of France | 0 | - | 4.59 | 57,290 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,237 |
| States of Germany | 0 | - | 4.95 | 153,254 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,303 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,390 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,742 |
| Italy Country Quiz | 0 | - | 4.77 | 123,619 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,128 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,445 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,445 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,426 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,173 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,406 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,683 |
| Geography of the British Empire | 0 | - | 4.48 | 39,737 |
| Champions League Winners | 0 | - | 4.92 | 1,010,085 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,709,210 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,185 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,371 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,276 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,194 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,525 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,653 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,969 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,415 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,676 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,392 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,251 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,074 |
| Countries that Border Poland | 0 | - | 4.99 | 172,634 |
| Russia Country Quiz | 0 | - | 4.83 | 114,715 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,997 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,562 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,495 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,443 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,419 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,679 |
| History of Austria | 0 | - | 4.70 | 17,909 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,864 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,786 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,671 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,199 |
| Departments of France | 0 | - | 4.93 | 54,499 |
| Geography of the French Empire | 0 | - | 4.45 | 27,157 |
| The French Revolution | 0 | - | 4.47 | 24,066 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,972 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,288 |
| French History Multiple Choice | 0 | - | 4.55 | 33,132 |
| Germany Country Quiz | 0 | - | 4.83 | 158,200 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,658 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,082 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,950 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,718 |
| Roman to Greek God | 0 | - | 4.52 | 123,030 |
| Counties of Ireland | 0 | - | 4.92 | 196,097 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,634 |
| Italian History A-Z | 0 | - | 4.21 | 17,741 |
| History of The Netherlands | 0 | - | 4.46 | 17,488 |
| The Vikings! | 0 | - | 4.46 | 28,370 |
| The Portuguese Empire | 0 | - | 4.58 | 12,086 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,132 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,250 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,224 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,392 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,019 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,318 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,849 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,784 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 62,281 |
| Medieval English History | 0 | - | 4.53 | 43,577 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,212 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,004 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,810 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,023 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,757 |
| England or Wales? | 0 | - | 4.94 | 45,806 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,047 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,111 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,272 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,078 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,548 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,929 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,889 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,372 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,029 |
| Germany A-Z | 0 | - | 4.56 | 62,702 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.39 | 82,644 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,689 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,752 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,212 |
| History of Germany | 0 | - | 4.39 | 52,905 |
| Holy Roman Empire Countries | 0 | - | 4.77 | 54,845 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,373 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 87,886 |
| Word Chain - Greek and Roman Mythology | 0 | - | 4.50 | 56,765 |
| Iceland... or Ireland? | 0 | - | 4.74 | 57,105 |
| Which City in Italy? | 0 | - | 4.68 | 90,309 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,756 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,998 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,528 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,856 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,082 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,751 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,550 |
| Roald Dahl Books | 0 | - | 4.44 | 34,082 |
