| Two Letter Roman Numerals | 0 | - | 4.97 | 56,470 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,365 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,438 |
| Byzantine History | 0 | - | 4.91 | 29,008 |
| Byzantine Emperors | 0 | - | 4.93 | 14,548 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,641 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,542 |
| Roman Emperors | 0 | - | 4.95 | 121,064 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,750 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,705 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,616 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,941 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,609 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,390 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,204 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,071 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,635 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,725 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,480 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,819 |
| Ancient Greek Words | 0 | - | 4.93 | 112,349 |
| Regions of Italy | 0 | - | 4.92 | 76,915 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,224 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,182 |
| Roman Names for Places | 0 | - | 4.62 | 58,658 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,722,208 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,127 |
| History of Italy | 0 | - | 4.55 | 32,129 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,721 |
| Roman History by Picture | 0 | - | 4.46 | 26,568 |
| Name the English Monarchs | 0 | - | 4.91 | 505,902 |
| Europe Map Quiz | 0 | - | 5.00 | 4,784,024 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,240 |
| Name that Greek Letter | 0 | - | 4.93 | 324,822 |
| Mythology A-Z | 0 | - | 4.31 | 37,379 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,206 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,226 |
| Prime Ministers of the UK | 0 | - | 4.95 | 441,861 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,530 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,719 |
| The Trojan War | 0 | - | 4.83 | 39,951 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,810 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,318 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,607 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,097 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,161 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,252 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,543 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,526 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,982 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,916 |
| The Only European Country ... | 0 | - | 4.91 | 218,665 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,346 |
| Roman to Greek God | 0 | - | 4.52 | 123,285 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,257 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,707 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,159 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,105 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,687 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,311 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,255,775 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,566 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,391 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,940 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,493 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,692 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,445 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,344 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,223 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,298 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,058 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,705 |
| Slavic Countries | 0 | - | 4.96 | 112,280 |
| History of Russia Quiz | 0 | - | 4.47 | 31,995 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,558 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 88,013 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,800 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,408 |
| Counties of England | 0 | - | 4.97 | 802,051 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,067 |
| Lord of the Rings Decoder | 0 | - | 4.61 | 42,772 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,647 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,875 |
| Champions League Winners | 0 | - | 4.92 | 1,014,734 |
| Countries of the Japanese Empire | 0 | - | 4.96 | 104,522 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,174 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,623 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,773 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,693 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,408 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,360 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,409 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,374 |
| Monarchies of Europe | 0 | - | 4.90 | 98,759 |
| European Countries with One Border | 0 | - | 4.97 | 183,631 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,393 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,478 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,686 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,412 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,665 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,200 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,753 |
| Russia Country Quiz | 0 | - | 4.83 | 115,232 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,235 |
| Countries That Border Russia | 0 | - | 4.98 | 464,226 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,688 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,405 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,550 |
| History of Austria | 0 | - | 4.70 | 17,966 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,903 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,503 |
| France Cities Map Quiz | 0 | - | 4.95 | 167,678 |
| Departments of France | 0 | - | 4.93 | 54,971 |
| Geography of the French Empire | 0 | - | 4.45 | 27,202 |
| The French Revolution | 0 | - | 4.47 | 24,130 |
| Countries Bordering France | 0 | - | 4.83 | 404,637 |
| History of France | 0 | - | 4.61 | 57,540 |
| Germany Country Quiz | 0 | - | 4.82 | 158,715 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,678 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,986 |
| States of Germany | 0 | - | 4.95 | 154,253 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,551 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,620 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,601 |
| Countries of the German Empire | 0 | - | 4.51 | 38,142 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,204 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,023 |
| Italy Country Quiz | 0 | - | 4.77 | 123,965 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,951 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,158 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,736 |
| The Vikings! | 0 | - | 4.46 | 28,398 |
| The Portuguese Empire | 0 | - | 4.58 | 12,097 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,401 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,161 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,751 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,677 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,454 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,609 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,446 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,179 |
| Geography of the British Empire | 0 | - | 4.48 | 39,831 |
| Medieval English History | 0 | - | 4.53 | 43,635 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,846 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,823 |
| England or Wales? | 0 | - | 4.94 | 45,927 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,830 |
| Countries of the Popes | 0 | - | 4.79 | 128,654 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,865 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 97,872 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,418 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,025 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,944 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,666 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,318 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,680 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,861 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,938 |
| Countries that Border Poland | 0 | - | 4.99 | 173,061 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,204 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,498 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,559 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,955 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,993 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,039 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,890 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,109 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,429 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,644 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,214 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,372 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,504 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,229 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,814 |
| Word Chain - Greek and Roman Mythology | 0 | - | 4.50 | 56,947 |
| Counties of Ireland | 0 | - | 4.92 | 197,059 |
| Italy A-Z | 0 | - | 4.49 | 58,698 |
| Italian History A-Z | 0 | - | 4.16 | 17,910 |
| History of The Netherlands | 0 | - | 4.46 | 17,539 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,058 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,797 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,298 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,963 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,288 |
| Arthurian Legend | 0 | - | 4.33 | 25,166 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,008 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,183 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.56 | 34,479 |
| Basic Harry Potter Quiz | 0 | - | 4.56 | 379,556 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,934 |
| British History A-Z #1 | 0 | - | 4.45 | 47,189 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,914 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 61,040 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,289 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,065 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,991 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,445 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,867 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,016 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,244 |
