| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,612 |
| Name the English Monarchs | 0 | - | 4.91 | 503,001 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,849 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,104 |
| Countries in World War I | 0 | - | 4.88 | 228,227 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,050 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,076 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,550 |
| Monarchies of Europe | 0 | - | 4.90 | 98,185 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,457 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 82,280 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,759 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,082 |
| Ancient Greek Words | 0 | - | 4.93 | 111,676 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,349 |
| Battle to Country | 0 | - | 4.91 | 53,379 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,167 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,071 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,417 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,224 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,174 |
| Europe Map Quiz | 0 | - | 5.00 | 4,764,699 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,122 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,022 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,053 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,963 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,783 |
| Name that Greek Letter | 0 | - | 4.93 | 323,669 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,848 |
| Countries in World War II | 0 | - | 4.54 | 913,193 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,356 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,511 |
| The Trojan War | 0 | - | 4.83 | 39,747 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,932 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,558 |
| Roman Emperors | 0 | - | 4.95 | 120,129 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,593 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,301 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,805 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,689 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,393 |
| Important Cities in WWII | 0 | - | 4.42 | 93,503 |
| The American Civil War | 0 | - | 4.62 | 52,436 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,155 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,245,049 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,329,171 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,349 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,725 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,252 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,854 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,202 |
| The Only European Country ... | 0 | - | 4.91 | 216,806 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,709 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,073 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,232 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,467 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,350 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,255 |
| Slavic Countries | 0 | - | 4.96 | 111,718 |
| History of Russia Quiz | 0 | - | 4.47 | 31,924 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,488 |
| Mythology A-Z | 0 | - | 4.31 | 37,234 |
| History of Italy | 0 | - | 4.55 | 31,985 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,325 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,672 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,246 |
| Counties of England | 0 | - | 4.97 | 797,382 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,885 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,678 |
| British History A-Z #1 | 0 | - | 4.45 | 46,508 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 356,350 |
| The Iraq War | 0 | - | 4.47 | 15,657 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,271 |
| Communist Countries in History | 0 | - | 4.63 | 495,907 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,898 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,613 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,415 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,182 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,003 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,809 |
| European Countries with One Border | 0 | - | 4.97 | 182,851 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,654 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,687 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,457 |
| Countries That Border Russia | 0 | - | 4.98 | 461,897 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,942 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,509 |
| Countries Bordering France | 0 | - | 4.83 | 402,691 |
| Kings of France Quiz | 0 | - | 4.20 | 32,757 |
| History of France | 0 | - | 4.59 | 57,042 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,894 |
| States of Germany | 0 | - | 4.95 | 152,745 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,098 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,314 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,550 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,706 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,086 |
| Regions of Italy | 0 | - | 4.92 | 75,977 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,233 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,057 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,250 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,281 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,034 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,358 |
| English Royal Consorts | 0 | - | 4.38 | 37,371 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,526 |
| Geography of the British Empire | 0 | - | 4.48 | 39,693 |
| Champions League Winners | 0 | - | 4.92 | 1,007,365 |
| Monarchies of Asia | 0 | - | 4.97 | 71,113 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,914 |
| The Vietnam War | 0 | - | 4.44 | 35,534 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,909 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,306 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,642 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,409 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,094 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,227 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,335 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,893 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,700,616 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,553 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,124 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,415 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,803 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,497 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,484 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,845 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,977 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 261,253 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,778 |
| Countries that Border Poland | 0 | - | 4.99 | 172,324 |
| Russia Country Quiz | 0 | - | 4.83 | 114,530 |
| Russia A-Z | 0 | - | 4.46 | 27,246 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,875 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,372 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,262 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,358 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,440 |
| History of Austria | 0 | - | 4.70 | 17,867 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,785 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,705 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,349 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,835 |
| Departments of France | 0 | - | 4.93 | 54,199 |
| Geography of the French Empire | 0 | - | 4.45 | 27,081 |
| The French Revolution | 0 | - | 4.47 | 23,967 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,888 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,202 |
| Germany Country Quiz | 0 | - | 4.83 | 157,931 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,404 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,856 |
| German History A-Z | 0 | - | 4.49 | 24,624 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,019 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,925 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,720 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,675 |
| Counties of Ireland | 0 | - | 4.92 | 195,471 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,451 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,102 |
| Italian History A-Z | 0 | - | 4.21 | 17,719 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,886 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,113 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,560 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,611 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,759 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,948 |
| Roman History by Picture | 0 | - | 4.46 | 26,469 |
| Roman Names for Places | 0 | - | 4.62 | 58,315 |
| Byzantine History | 0 | - | 4.91 | 28,875 |
| Byzantine Emperors | 0 | - | 4.92 | 14,215 |
| History of The Netherlands | 0 | - | 4.46 | 17,441 |
| The Vikings! | 0 | - | 4.46 | 28,351 |
| The Portuguese Empire | 0 | - | 4.58 | 12,067 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,972 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,724 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,181 |
| Spanish History A-Z | 0 | - | 4.37 | 19,305 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,072 |
| British Acronyms | 0 | - | 4.40 | 45,806 |
| British Monopoly Board | 0 | - | 4.52 | 41,177 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,699 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,910 |
| Medieval English History | 0 | - | 4.53 | 43,526 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,169 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,974 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,849 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,695 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,878 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,711 |
| England or Wales? | 0 | - | 4.94 | 45,720 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,485 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,004 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 134,739 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,099 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,858 |
| The Persian Gulf War | 0 | - | 4.02 | 8,450 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,602 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,073 |
| Hindu Countries | 0 | - | 4.86 | 50,187 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,690 |
