| Ancient Greek Words | 0 | - | 4.93 | 111,920 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,939 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,633 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,944 |
| Name that Greek Letter | 0 | - | 4.93 | 324,187 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,281 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,564 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,748 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,840 |
| Mythology A-Z | 0 | - | 4.31 | 37,289 |
| The Trojan War | 0 | - | 4.83 | 39,800 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,261 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,405 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,202 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,520 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,765 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,483 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,117 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,333 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,150 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,014 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,059 |
| Roman to Greek God | 0 | - | 4.52 | 123,025 |
| Name the English Monarchs | 0 | - | 4.91 | 504,011 |
| Europe Map Quiz | 0 | - | 5.00 | 4,771,620 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,526 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,387 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,650 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,232 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,103 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,095 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,590 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,079 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,947 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,656 |
| Roman Emperors | 0 | - | 4.95 | 120,408 |
| Byzantine History | 0 | - | 4.91 | 28,919 |
| Byzantine Emperors | 0 | - | 4.92 | 14,368 |
| Medieval English History | 0 | - | 4.53 | 43,574 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,068 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,904 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,716 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 87,883 |
| Roman History by Picture | 0 | - | 4.46 | 26,500 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,426 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,070 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,116 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,501 |
| Premier League Relegated Teams | 0 | - | 4.81 | 126,926 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,595 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,248,787 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,839 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,706 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,938 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,446 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,367 |
| The Only European Country ... | 0 | - | 4.91 | 217,422 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,307 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,094 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,594 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,569 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,414 |
| Slavic Countries | 0 | - | 4.96 | 111,895 |
| History of Russia Quiz | 0 | - | 4.47 | 31,952 |
| Holy Roman Empire Countries | 0 | - | 4.77 | 54,840 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,687 |
| History of Italy | 0 | - | 4.55 | 32,054 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,233 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,721 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,299 |
| Counties of England | 0 | - | 4.97 | 798,993 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,959 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,723 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,278 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,621 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,243 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,941 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,055 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,867 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,733 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,821 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,999 |
| Monarchies of Europe | 0 | - | 4.90 | 98,358 |
| European Countries with One Border | 0 | - | 4.97 | 183,133 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,905 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 86,823 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,036 |
| Countries That Border Russia | 0 | - | 4.98 | 462,853 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,104 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,865 |
| Countries Bordering France | 0 | - | 4.83 | 403,580 |
| History of France | 0 | - | 4.59 | 57,279 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,228 |
| States of Germany | 0 | - | 4.95 | 153,232 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,294 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,388 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,709 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,524 |
| Regions of Italy | 0 | - | 4.92 | 76,250 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,434 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,425 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,423 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,167 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,406 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,677 |
| Geography of the British Empire | 0 | - | 4.48 | 39,735 |
| Champions League Winners | 0 | - | 4.92 | 1,009,991 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,708,879 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,407 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,116 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,368 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,272 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,191 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,523 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,647 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,944 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,394 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,647 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,381 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,133 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,056 |
| Countries that Border Poland | 0 | - | 4.99 | 172,618 |
| Russia Country Quiz | 0 | - | 4.83 | 114,706 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,989 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,472 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,437 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,417 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,674 |
| History of Austria | 0 | - | 4.70 | 17,906 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,859 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,779 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,667 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,179 |
| Departments of France | 0 | - | 4.93 | 54,479 |
| Geography of the French Empire | 0 | - | 4.45 | 27,156 |
| The French Revolution | 0 | - | 4.47 | 24,064 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,969 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,287 |
| French History Multiple Choice | 0 | - | 4.55 | 33,128 |
| Germany Country Quiz | 0 | - | 4.83 | 158,194 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,636 |
| Counties of Ireland | 0 | - | 4.92 | 196,078 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,669 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,615 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,026 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,422 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,362 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,618 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,793 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,993 |
| Roman Names for Places | 0 | - | 4.62 | 58,404 |
| History of The Netherlands | 0 | - | 4.46 | 17,484 |
| The Vikings! | 0 | - | 4.46 | 28,368 |
| The Portuguese Empire | 0 | - | 4.58 | 12,083 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,122 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,232 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,219 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,378 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,996 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,293 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,847 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,780 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 62,269 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,208 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,002 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,807 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,012 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,757 |
| England or Wales? | 0 | - | 4.94 | 45,804 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,017 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,409 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,098 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,270 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,069 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,546 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,928 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,885 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,367 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,029 |
| Germany A-Z | 0 | - | 4.56 | 62,700 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.39 | 82,639 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,681 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,746 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,207 |
| History of Germany | 0 | - | 4.39 | 52,899 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,372 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,512 |
| Word Chain - Greek and Roman Mythology | 0 | - | 4.50 | 56,760 |
| Iceland... or Ireland? | 0 | - | 4.74 | 57,102 |
| Italy A-Z | 0 | - | 4.49 | 58,447 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,656 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,749 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,990 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,517 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,854 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,070 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,746 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,546 |
| Roald Dahl Books | 0 | - | 4.44 | 34,080 |
| Shakespearean Phrases | 0 | - | 4.57 | 36,781 |
