| Neutral European Countries of WWII | 0 | - | 4.92 | 148,962 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 49,198 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.56 | 13,843 |
| Countries of Europe After World War II | 0 | - | 4.98 | 172,108 |
| Olympian Gods Quiz | 0 | - | 4.96 | 459,368 |
| States of the German Confederation in 1848 | 0 | - | 4.84 | 26,835 |
| Ancient Greek Words | 0 | - | 4.90 | 98,400 |
| Prime Ministers of the UK | 0 | - | 4.95 | 384,239 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 140,699 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 22,331 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 100,511 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 134,901 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 63,751 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 59,566 |
| States of Germany Map Quiz | 0 | - | 4.92 | 121,373 |
| States of Germany | 0 | - | 4.93 | 125,445 |
| Germany Immigration by Country | 0 | - | 4.90 | 70,524 |
| Countries Italy Declared War On | 0 | - | 4.79 | 40,201 |
| English Monarchs Quiz | 0 | - | 4.91 | 450,603 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 98,942 |
| Germany Country Quiz | 0 | - | 4.82 | 141,503 |
| Germany A-Z | 0 | - | 4.65 | 50,181 |
| Countries Bordering Germany | 0 | - | 4.99 | 342,691 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 72,883 |
| The Life of Winston Churchill | 0 | - | 4.10 | 11,368 |
| Europe Map Quiz | 0 | - | 5.00 | 4,324,314 |
| Category Elimination - European Countries #1 | 0 | - | 4.88 | 77,448 |
| The Reign of Napoleon | 0 | - | 4.53 | 36,275 |
| Countries With the Most German Speakers | 0 | - | 4.88 | 52,884 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 588,285 |
| Famous Ancient Romans | 0 | - | 4.72 | 74,646 |
| Mythology A-Z | 0 | - | 4.29 | 34,222 |
| Roman History Vocabulary | 0 | - | 4.43 | 55,295 |
| Biggest Axis-Controlled Cities | 0 | - | 4.40 | 44,946 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.81 | 10,103 |
| The American Revolution | 0 | - | 4.51 | 51,881 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 389,583 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.72 | 54,169 |
| Countries that Beat Germany | 0 | - | 4.87 | 70,863 |
| The Trojan War | 0 | - | 4.81 | 36,174 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.81 | 86,406 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 72,075 |
| Roman Emperors | 0 | - | 4.95 | 96,781 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 82,528 |
| Roman History by Picture | 0 | - | 4.44 | 24,672 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 50,606 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.90 | 62,332 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 178,260 |
| Beatles Songs Quiz | 0 | - | 4.95 | 210,161 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 275,324 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.92 | 46,776 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 337,919 |
| Biggest Trading Partners - Germany | 0 | - | 4.98 | 63,239 |
| Name that Greek Letter | 0 | - | 4.94 | 297,263 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 402,164 |
| Geography of the Dutch Empire | 0 | - | 4.70 | 32,560 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 74,998 |
| Counties of England | 0 | - | 4.97 | 697,557 |
| Invasions of Great Britain | 0 | - | 4.49 | 55,867 |
| Middle Earth Geography | 0 | - | 4.56 | 37,419 |
| Lord of the Rings Trivia | 0 | - | 4.52 | 75,722 |
| Members of the Fellowship of the Ring | 0 | - | 4.79 | 43,359 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 13,341 |
| Countries of the Popes | 0 | - | 4.85 | 111,744 |
| The Iraq War | 0 | - | 4.45 | 14,446 |
| Countries That Use the Euro | 0 | - | 4.93 | 64,720 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,055,882 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.93 | 1,197,516 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 94,074 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 179,009 |
| 10 Westernmost Countries in Europe | 0 | - | 4.95 | 139,498 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.94 | 188,549 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.83 | 39,203 |
| European Landmarks Map Quiz | 0 | - | 4.98 | 77,677 |
| The Only European Country ... | 0 | - | 4.93 | 180,964 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 287,262 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 117,727 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 75,676 |
| Eastern Europe Map Quiz | 0 | - | 4.90 | 116,393 |
| Slavic Countries | 0 | - | 4.96 | 101,148 |
| Countries of the Soviet Union | 0 | - | 4.98 | 185,560 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 22,113 |
| All Bundesliga Teams Ever | 0 | - | 4.43 | 39,488 |
| History of Germany Quiz | 0 | - | 4.35 | 40,331 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 100,292 |
| Italy A-Z | 0 | - | 4.43 | 40,784 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 32,247 |
| Regions of Spain Quiz | 0 | - | 4.87 | 96,168 |
| Cantons of Switzerland | 0 | - | 4.97 | 40,857 |
| Countries and Territories of the United Kingdom | 0 | - | 4.88 | 84,437 |
| Wives of King Henry VIII | 0 | - | 4.53 | 44,810 |
| Countries the UK Declared War On | 0 | - | 4.58 | 113,073 |
| Geography of the British Empire | 0 | - | 4.51 | 37,227 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 80,864 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 276,658 |
| Champions League Winners | 0 | - | 4.91 | 874,083 |
| The Vietnam War | 0 | - | 4.41 | 33,015 |
| European Diaspora - Top 11 Countries | 0 | - | 4.89 | 84,699 |
| 10 European Countries with the Most Tourists | 0 | - | 4.97 | 122,276 |
| Three Band Flags of Europe | 0 | - | 4.97 | 162,360 |
| Pixelated Europe Map | 0 | - | 4.90 | 110,277 |
| Monarchies of Europe | 0 | - | 4.88 | 87,616 |
| European Countries with One Border | 0 | - | 4.96 | 151,786 |
| European Countries with the Fewest Borders | 0 | - | 4.98 | 145,425 |
| Federal Subjects of Russia | 0 | - | 4.95 | 114,487 |
| Countries That Border Russia | 0 | - | 4.98 | 428,632 |
| Soviet Leaders 1917–1991 | 0 | - | 4.42 | 87,834 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 74,922 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 102,645 |
| Regions of France Map Quiz | 0 | - | 4.96 | 128,369 |
| France Immigration by Country | 0 | - | 4.81 | 69,549 |
| Countries Bordering France | 0 | - | 4.87 | 359,698 |
| History of France Quiz | 0 | - | 4.55 | 39,866 |
| Figures from Greek Mythology | 0 | - | 4.92 | 170,213 |
| Counties of Ireland | 0 | - | 4.90 | 161,418 |
| Regions of Italy | 0 | - | 4.89 | 61,204 |
| Geography of the Roman Empire | 0 | - | 4.57 | 48,728 |
| Roman Names for Places | 0 | - | 4.66 | 41,908 |
| Byzantine History | 0 | - | 4.87 | 26,387 |
| History of The Netherlands | 0 | - | 4.43 | 15,860 |
| The Vikings! | 0 | - | 4.45 | 27,208 |
| The Portuguese Empire | 0 | - | 4.54 | 11,374 |
| Spain Cities Map Quiz | 0 | - | 4.86 | 87,071 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 170,589 |
| Geography of the Spanish Empire | 0 | - | 4.48 | 35,354 |
| Countries Closest to Spain | 0 | - | 4.95 | 207,299 |
| Arthurian Legend | 0 | - | 4.35 | 24,329 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 101,236 |
| Counties of the UK and Ireland | 0 | - | 4.97 | 105,993 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.79 | 26,544 |
| Lord of the Rings - Races | 0 | - | 4.24 | 55,126 |
| The Ultimate LOTR Character Quiz - The Books | 0 | - | 4.60 | 17,848 |
| Houses of British Monarchs | 0 | - | 4.50 | 52,484 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.32 | 54,392 |
| Medieval English History | 0 | - | 4.52 | 41,007 |
| British History Multiple Choice #1 | 0 | - | 4.47 | 51,804 |
| Doctor Who Actors | 0 | - | 4.59 | 16,993 |
| World Capitals Closest to London | 0 | - | 4.91 | 94,087 |
| 50 Busiest Air Routes from London | 0 | - | 4.88 | 86,963 |
| England or Wales? | 0 | - | 4.93 | 40,620 |
| All Champions League Teams Ever | 0 | - | 4.90 | 106,489 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 85,380 |
| Top 10 Richest Countries in Asia | 0 | - | 4.87 | 82,355 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 102,618 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 94,475 |
| African Countries with the Most Christians | 0 | - | 4.92 | 67,938 |
| Top 10 Richest Countries in Africa | 0 | - | 4.87 | 68,382 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 110,535 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,198,945 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 159,120 |
| U.S. Civil War Decoder | 0 | - | 4.17 | 24,161 |
| Canadian Prime Ministers Quiz | 0 | - | 4.64 | 50,157 |
| Top 10 Coldest European Countries | 0 | - | 4.95 | 182,034 |
| Top 10 Hottest European Countries | 0 | - | 4.87 | 116,330 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 66,469 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 128,766 |
| Top 10 Richest Countries in Europe | 0 | - | 4.88 | 136,507 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 180,453 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 56,934 |
| Biggest Trading Partners - European Union | 0 | - | 4.90 | 65,470 |
| Category Elimination - European Geography #1 | 0 | - | 4.97 | 203,081 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 248,831 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 144,713 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 191,234 |
| Name a Valid European Country #2 | 0 | - | 4.93 | 85,189 |
| Countries that Border Poland | 0 | - | 4.99 | 159,628 |
| Russia Country Quiz | 0 | - | 4.84 | 104,180 |
| History of Russia Quiz | 0 | - | 4.48 | 30,002 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.92 | 76,433 |
| Countries With the Most Russian Speakers | 0 | - | 4.95 | 56,959 |
| Croatia Country Quiz | 0 | - | 4.81 | 37,770 |
| Countries that Border Hungary | 0 | - | 4.98 | 97,003 |
| Countries Bordering Serbia | 0 | - | 4.95 | 83,775 |
| History of Austria | 0 | - | 4.69 | 16,487 |
| Countries Bordering Austria | 0 | - | 4.97 | 110,689 |
| France Cities Map Quiz | 0 | - | 4.96 | 149,372 |
| Geography of the French Empire | 0 | - | 4.49 | 25,522 |
| The French Revolution | 0 | - | 4.45 | 22,054 |
| Countries that Visit France the Most | 0 | - | 4.81 | 40,250 |
| Countries Closest to Metropolitan France | 0 | - | 4.87 | 66,672 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.49 | 36,042 |
| Germany Cities Map Quiz | 0 | - | 4.84 | 107,026 |
| Famous Germans by Picture | 0 | - | 4.09 | 15,639 |
| Bundesliga Champions | 0 | - | 4.22 | 46,115 |
| Ancient Greek Trivia | 0 | - | 4.55 | 63,631 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.55 | 56,473 |
| Ancient Greece - Multiple Choice | 0 | - | 4.53 | 38,885 |
| History of Ireland Quiz | 0 | - | 4.44 | 19,054 |
| Italy Country Quiz | 0 | - | 4.81 | 110,174 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 135,039 |
| Italy Cities Map Quiz | 0 | - | 4.96 | 138,789 |
| History of Italy | 0 | - | 4.49 | 29,910 |
| Countries Bordering Italy | 0 | - | 4.95 | 95,025 |
| Countries Closest to Italy | 0 | - | 4.97 | 180,693 |
| Countries Surrounding Rome | 0 | - | 4.96 | 46,813 |
| Ancient Roman Trivia #2 | 0 | - | 4.55 | 35,564 |
| The Life of Julius Caesar | 0 | - | 4.46 | 32,249 |
| Greenland Country Quiz | 0 | - | 4.81 | 32,625 |
| Countries Closest to Iceland | 0 | - | 4.87 | 63,465 |
| Countries that Beat Portugal | 0 | - | 4.84 | 36,039 |
