| Two Letter Roman Numerals | 0 | - | 4.97 | 56,600 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,320 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,336 |
| Byzantine History | 0 | - | 4.91 | 29,041 |
| Byzantine Emperors | 0 | - | 4.93 | 14,655 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 104,117 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,679 |
| Roman Emperors | 0 | - | 4.95 | 121,398 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,827 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,737 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 127,025 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 21,008 |
| Figures from Greek Mythology | 0 | - | 4.91 | 189,182 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,507 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,532 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,967 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,977 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,998 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,708 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.89 | 114,362 |
| Ancient Greek Words | 0 | - | 4.93 | 112,630 |
| Regions of Italy | 0 | - | 4.92 | 77,243 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,373 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,258 |
| Roman Names for Places | 0 | - | 4.62 | 58,777 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,730,474 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,403 |
| History of Italy | 0 | - | 4.55 | 32,180 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,774 |
| Roman History by Picture | 0 | - | 4.46 | 26,611 |
| Name the English Monarchs | 0 | - | 4.91 | 507,267 |
| Europe Map Quiz | 0 | - | 5.00 | 4,792,638 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,793 |
| Name that Greek Letter | 0 | - | 4.93 | 325,213 |
| Mythology A-Z | 0 | - | 4.31 | 37,439 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,350 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,616 |
| Prime Ministers of the UK | 0 | - | 4.95 | 443,048 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,352 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,809 |
| The Trojan War | 0 | - | 4.83 | 40,042 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,144 |
| Countries Italy Declared War On | 0 | - | 4.74 | 48,011 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,265 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,193 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,276 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,923 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,169 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,546 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,449 |
| The Only European Country ... | 0 | - | 4.91 | 219,518 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,797 |
| Roman to Greek God | 0 | - | 4.52 | 123,439 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 102,433 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 108,922 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,284 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,661 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,967 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,338 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,261,023 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,015 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,755 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,508 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,204 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,896 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,112 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,441 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,625 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,697 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,344 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,904 |
| Slavic Countries | 0 | - | 4.96 | 112,488 |
| History of Russia Quiz | 0 | - | 4.47 | 32,023 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,656 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 88,256 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,844 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,465 |
| Counties of England | 0 | - | 4.97 | 804,089 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,140 |
| Lord of the Rings Decoder | 0 | - | 4.61 | 42,822 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,655 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,513 |
| Champions League Winners | 0 | - | 4.92 | 1,017,722 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,675 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,234 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,083 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,042 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,927 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,968 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,703 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,823 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,598 |
| Monarchies of Europe | 0 | - | 4.90 | 99,018 |
| European Countries with One Border | 0 | - | 4.97 | 184,000 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,710 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,274 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,266 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,056 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,213 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,303 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,101 |
| Russia Country Quiz | 0 | - | 4.83 | 115,424 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,890 |
| Countries That Border Russia | 0 | - | 4.98 | 464,868 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,822 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,568 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,629 |
| History of Austria | 0 | - | 4.70 | 17,991 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,982 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,794 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,974 |
| Departments of France | 0 | - | 4.93 | 55,375 |
| Geography of the French Empire | 0 | - | 4.45 | 27,230 |
| The French Revolution | 0 | - | 4.47 | 24,165 |
| Countries Bordering France | 0 | - | 4.83 | 405,299 |
| History of France | 0 | - | 4.61 | 57,715 |
| Germany Country Quiz | 0 | - | 4.82 | 159,028 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,959 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,212 |
| States of Germany | 0 | - | 4.95 | 154,893 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,573 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,791 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,189 |
| Countries of the German Empire | 0 | - | 4.51 | 38,302 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,277 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,069 |
| Italy Country Quiz | 0 | - | 4.77 | 124,188 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,196 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,177 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,899 |
| The Vikings! | 0 | - | 4.46 | 28,419 |
| The Portuguese Empire | 0 | - | 4.58 | 12,116 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,599 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,552 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,013 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,885 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,609 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,014 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,486 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,357 |
| Geography of the British Empire | 0 | - | 4.48 | 39,868 |
| Medieval English History | 0 | - | 4.53 | 43,686 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,918 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,860 |
| England or Wales? | 0 | - | 4.94 | 46,012 |
| Name the Popes Quiz | 0 | - | 4.47 | 139,075 |
| Countries of the Popes | 0 | - | 4.79 | 128,873 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,423 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,117 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,684 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,198 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 62,092 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,945 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,394 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,815 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,039 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,247 |
| Countries that Border Poland | 0 | - | 4.99 | 173,327 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,342 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,730 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 103,215 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,087 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,196 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,217 |
| Countries Bordering Austria | 0 | - | 4.97 | 119,028 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,208 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,555 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,787 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,467 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 99,057 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,642 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,423 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,888 |
| Word Chain - Greek and Roman Mythology | 0 | - | 4.50 | 57,056 |
| Counties of Ireland | 0 | - | 4.92 | 197,635 |
| Italy A-Z | 0 | - | 4.49 | 58,831 |
| Italian History A-Z | 0 | - | 4.16 | 17,952 |
| History of The Netherlands | 0 | - | 4.46 | 17,571 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,272 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,981 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,331 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,348 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,428 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 69,070 |
| Arthurian Legend | 0 | - | 4.33 | 25,192 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,176 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,606 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.56 | 34,522 |
| Basic Harry Potter Quiz | 0 | - | 4.56 | 379,833 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,997 |
| British History A-Z #1 | 0 | - | 4.45 | 47,317 |
| Houses of British Monarchs | 0 | - | 4.54 | 66,013 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 61,143 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,351 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,103 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,145 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,510 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,883 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,128 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,393 |
