| Two Letter Roman Numerals | 0 | - | 4.97 | 56,000 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,550 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,276 |
| Byzantine History | 0 | - | 4.91 | 28,755 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 102,524 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,418 |
| Roman Emperors | 0 | - | 4.95 | 119,653 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,387 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,559 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,429 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,873 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,572 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,879 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 76,120 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,280 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,698 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,607 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,659 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,536 |
| Ancient Greek Words | 0 | - | 4.93 | 111,349 |
| Regions of Italy | 0 | - | 4.92 | 75,538 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,695 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,860 |
| Roman Names for Places | 0 | - | 4.62 | 58,180 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,687,969 |
| Italy Country Quiz | 0 | - | 4.82 | 123,189 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,122 |
| History of Italy | 0 | - | 4.55 | 31,935 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,516 |
| Roman History by Picture | 0 | - | 4.46 | 26,437 |
| Name the English Monarchs | 0 | - | 4.91 | 501,471 |
| Europe Map Quiz | 0 | - | 5.00 | 4,755,372 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,090 |
| Name that Greek Letter | 0 | - | 4.93 | 323,083 |
| Mythology A-Z | 0 | - | 4.31 | 37,166 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,750 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,699 |
| Prime Ministers of the UK | 0 | - | 4.95 | 437,812 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,489 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,389 |
| The Trojan War | 0 | - | 4.83 | 39,648 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,533 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,524 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,246 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,311 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,057 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,167 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 492,926 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,533 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,936 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,823 |
| The Only European Country ... | 0 | - | 4.91 | 215,980 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,766 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,753 |
| Roman to Greek God | 0 | - | 4.52 | 122,652 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,751 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,119 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,688 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,646 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,453 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,240 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,239,894 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,187 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,421 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,966 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,158 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,981 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,959 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,597 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,041 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,237 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,999 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,722 |
| Slavic Countries | 0 | - | 4.96 | 111,487 |
| History of Russia Quiz | 0 | - | 4.49 | 31,879 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,223 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 87,663 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,612 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,164 |
| Counties of England | 0 | - | 4.97 | 794,781 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,794 |
| Lord of the Rings Decoder | 0 | - | 4.59 | 42,548 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,594 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,177 |
| Champions League Winners | 0 | - | 4.92 | 1,003,698 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,170 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,608 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,443 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,848 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,879 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,781 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,667 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,244 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,902 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,498 |
| Monarchies of Europe | 0 | - | 4.90 | 97,948 |
| European Countries with One Border | 0 | - | 4.97 | 182,509 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,316 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,596 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,273 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,940 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,668 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,936 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,335 |
| Russia Country Quiz | 0 | - | 4.85 | 114,275 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,384 |
| Countries That Border Russia | 0 | - | 4.98 | 461,090 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,237 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,723 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,293 |
| History of Austria | 0 | - | 4.70 | 17,834 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,144 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,446 |
| Departments of France | 0 | - | 4.93 | 53,776 |
| Geography of the French Empire | 0 | - | 4.45 | 27,025 |
| The French Revolution | 0 | - | 4.46 | 23,901 |
| Countries Bordering France | 0 | - | 4.83 | 401,872 |
| History of France | 0 | - | 4.59 | 56,826 |
| Germany Country Quiz | 0 | - | 4.82 | 157,574 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,539 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,860 |
| States of Germany | 0 | - | 4.96 | 151,897 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,464 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,883 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,591 |
| Countries of the German Empire | 0 | - | 4.51 | 37,866 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,937 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,875 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,812 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,087 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,864 |
| The Vikings! | 0 | - | 4.46 | 28,319 |
| The Portuguese Empire | 0 | - | 4.58 | 12,047 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,656 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,633 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,367 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,999 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,548 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,228 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,307 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,298 |
| Geography of the British Empire | 0 | - | 4.48 | 39,630 |
| Medieval English History | 0 | - | 4.53 | 43,462 |
| Countries "Ruled" by King Charles III | 0 | - | 4.77 | 82,709 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,659 |
| England or Wales? | 0 | - | 4.94 | 45,599 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,904 |
| Countries of the Popes | 0 | - | 4.79 | 127,862 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,734 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,005 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,423 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,506 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,040 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,273 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,345 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,777 |
| Countries that Border Poland | 0 | - | 4.99 | 172,050 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,720 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,458 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,227 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,088 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,243 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,716 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,184 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,788 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,089 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,060 |
| French History Multiple Choice | 0 | - | 4.55 | 33,002 |
| Countries that Beat Germany | 0 | - | 4.95 | 106,106 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,091 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,907 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,467 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,605 |
| Word Chain - Greek and Roman Mythology | 0 | - | 4.50 | 56,520 |
| Counties of Ireland | 0 | - | 4.92 | 194,628 |
| Italy A-Z | 0 | - | 4.49 | 58,155 |
| Italian History A-Z | 0 | - | 4.21 | 17,671 |
| History of The Netherlands | 0 | - | 4.46 | 17,407 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,370 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,144 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,124 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,621 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,784 |
| Arthurian Legend | 0 | - | 4.33 | 25,094 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,367 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,167 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.57 | 34,336 |
| Basic Harry Potter Quiz | 0 | - | 4.56 | 378,469 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,742 |
| British History A-Z #1 | 0 | - | 4.45 | 46,400 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,574 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,586 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,103 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,925 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,469 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,218 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,837 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,232 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,688 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 400,269 |
