| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,661 |
| Name the English Monarchs | 0 | - | 4.91 | 507,716 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,097 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,865 |
| Countries in World War I | 0 | - | 4.88 | 229,536 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,535 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,756 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,618 |
| Monarchies of Europe | 0 | - | 4.90 | 99,102 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,657 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,283 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,110 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,094 |
| Countries Invaded by the USSR | 0 | - | 4.30 | 94,539 |
| Ancient Greek Words | 0 | - | 4.93 | 112,742 |
| Countries Italy Declared War On | 0 | - | 4.77 | 50,543 |
| Battle to Country | 0 | - | 4.91 | 54,171 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,147 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 128,043 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,524 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,417 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,662 |
| Europe Map Quiz | 0 | - | 5.00 | 4,795,510 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,342 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 103,485 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,249 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,410 |
| Name that Greek Letter | 0 | - | 4.93 | 325,419 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,884 |
| Countries in World War II | 0 | - | 4.55 | 920,807 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,604 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,846 |
| The Trojan War | 0 | - | 4.83 | 40,126 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,367 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,736 |
| Roman Emperors | 0 | - | 4.95 | 121,526 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,727 |
| Russia A-Z | 0 | - | 4.46 | 27,337 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 108,986 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 32,013 |
| Houses of British Monarchs | 0 | - | 4.54 | 66,051 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,893 |
| Important Cities in WWII | 0 | - | 4.42 | 94,316 |
| The American Civil War | 0 | - | 4.62 | 52,677 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,406 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,262,691 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,822 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,625 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,859 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,600 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,468 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,964 |
| The Only European Country ... | 0 | - | 4.91 | 219,800 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,366 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,806 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,941 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,757 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,450 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,965 |
| Slavic Countries | 0 | - | 4.96 | 112,570 |
| History of Russia Quiz | 0 | - | 4.47 | 32,033 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,695 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,869 |
| Mythology A-Z | 0 | - | 4.31 | 37,469 |
| History of Italy | 0 | - | 4.55 | 32,200 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,752 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,702 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,867 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,485 |
| Counties of England | 0 | - | 4.97 | 804,810 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,158 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,863 |
| British History A-Z #1 | 0 | - | 4.45 | 47,368 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 363,109 |
| The Iraq War | 0 | - | 4.47 | 15,725 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,720 |
| Communist Countries in History | 0 | - | 4.63 | 498,971 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,286 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 97,042 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,810 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,979 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,941 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,273 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,729 |
| European Countries with One Border | 0 | - | 4.97 | 184,119 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,834 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,360 |
| Federal Subjects of Russia | 0 | - | 4.95 | 150,058 |
| Countries That Border Russia | 0 | - | 4.98 | 465,116 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,633 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,878 |
| Countries Bordering France | 0 | - | 4.83 | 405,531 |
| Kings of France Quiz | 0 | - | 4.22 | 32,978 |
| History of France | 0 | - | 4.61 | 57,772 |
| States of Germany Map Quiz | 0 | - | 4.92 | 134,069 |
| States of Germany | 0 | - | 4.95 | 155,069 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,867 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,682 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,393 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 146,173 |
| Figures from Greek Mythology | 0 | - | 4.92 | 194,646 |
| Regions of Italy | 0 | - | 4.92 | 77,337 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,977 |
| Regions of Spain Quiz | 0 | - | 4.91 | 115,689 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,971 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,521 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,701 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,498 |
| English Royal Consorts | 0 | - | 4.38 | 37,574 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,418 |
| Geography of the British Empire | 0 | - | 4.48 | 39,892 |
| Champions League Winners | 0 | - | 4.92 | 1,018,770 |
| Monarchies of Asia | 0 | - | 4.97 | 71,649 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,392 |
| The Vietnam War | 0 | - | 4.44 | 35,699 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.92 | 95,802 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 93,011 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,365 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,201 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,733,408 |
| Canadian Prime Ministers | 0 | - | 4.64 | 58,055 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,422 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,855 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,493 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 201,082 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,095 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,451 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,483 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,673 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,212 |
| Countries that Border Poland | 0 | - | 4.99 | 173,410 |
| Russia Country Quiz | 0 | - | 4.83 | 115,521 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,384 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,875 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,135 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.85 | 35,675 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,259 |
| History of Austria | 0 | - | 4.70 | 17,994 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,326 |
| Andorra Country Quiz | 0 | - | 4.91 | 32,026 |
| Countries Bordering Austria | 0 | - | 4.97 | 119,089 |
| France Cities Map Quiz | 0 | - | 4.96 | 168,143 |
| Departments of France | 0 | - | 4.93 | 55,486 |
| Geography of the French Empire | 0 | - | 4.45 | 27,243 |
| The French Revolution | 0 | - | 4.47 | 24,175 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,255 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,607 |
| Germany Country Quiz | 0 | - | 4.82 | 159,174 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,317 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,581 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 99,320 |
| German History A-Z | 0 | - | 4.49 | 24,958 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,304 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,081 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,550 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,910 |
| Counties of Ireland | 0 | - | 4.92 | 197,801 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,508 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,303 |
| Italian History A-Z | 0 | - | 4.16 | 17,966 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,414 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,806 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,800 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,417 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,284 |
| Roman History by Picture | 0 | - | 4.46 | 26,621 |
| Roman Names for Places | 0 | - | 4.62 | 58,820 |
| Byzantine History | 0 | - | 4.91 | 29,066 |
| Byzantine Emperors | 0 | - | 4.93 | 14,674 |
| History of The Netherlands | 0 | - | 4.46 | 17,582 |
| The Vikings! | 0 | - | 4.46 | 28,434 |
| The Portuguese Empire | 0 | - | 4.58 | 12,120 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,662 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,100 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,340 |
| Spanish History A-Z | 0 | - | 4.37 | 19,544 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,482 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 69,192 |
| British Acronyms | 0 | - | 4.40 | 45,997 |
| British Monopoly Board | 0 | - | 4.52 | 41,301 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,141 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,763 |
| Medieval English History | 0 | - | 4.53 | 43,700 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,366 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,116 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 36,037 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,467 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,462 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,879 |
| England or Wales? | 0 | - | 4.94 | 46,096 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,627 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,843 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,922 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,652 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 98,013 |
| The Persian Gulf War | 0 | - | 4.02 | 8,492 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,767 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 77,186 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,546 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,668 |
