| Prime Ministers of the UK | 0 | - | 4.95 | 384,187 |
| Prime Ministers of Australia | 0 | - | 4.48 | 28,186 |
| Canadian Prime Ministers Quiz | 0 | - | 4.64 | 50,141 |
| Countries of the Popes | 0 | - | 4.85 | 111,702 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,198,332 |
| Country by Photo of its Leader | 0 | - | 4.78 | 115,988 |
| Biggest Trading Partners – Australia | 0 | - | 4.89 | 47,604 |
| Australia Map Quiz | 0 | - | 4.95 | 321,286 |
| Soviet Leaders 1917–1991 | 0 | - | 4.42 | 87,826 |
| National Founders | 0 | - | 4.39 | 79,922 |
| Paramount Leaders of China | 0 | - | 4.31 | 9,998 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 396,510 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 49,189 |
| The Dictator Files: Chairman Mao | 0 | - | 4.32 | 18,633 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 355,038 |
| Prime Ministers of Israel | 0 | - | 4.10 | 16,241 |
| Australia Cities Map Quiz | 0 | - | 4.85 | 132,129 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 223,121 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 168,774 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 134,883 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 63,733 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.93 | 50,280 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 59,555 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.42 | 24,159 |
| States of the German Confederation in 1848 | 0 | - | 4.84 | 26,830 |
| Political Movements by Country | 0 | - | 4.46 | 68,825 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 101,209 |
| English Monarchs Quiz | 0 | - | 4.91 | 450,535 |
| Name the Popes Quiz | 0 | - | 4.46 | 122,894 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 85,366 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 102,592 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 94,456 |
| African Countries with the Most Christians | 0 | - | 4.92 | 67,926 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 110,521 |
| Most Visited Countries by Australians | 0 | - | 4.95 | 84,654 |
| Countries that Visit Australia the Most | 0 | - | 4.92 | 60,481 |
| Countries Closest to Australia | 0 | - | 4.99 | 146,183 |
| U.S. Federal Agency Acronyms | 0 | - | 4.51 | 76,339 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 67,894 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.72 | 54,163 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 180,247 |
| Countries Italy Declared War On | 0 | - | 4.79 | 40,196 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.81 | 10,099 |
| Top 10 Richest Countries in Asia | 0 | - | 4.87 | 82,331 |
| Top 10 Richest Countries in Africa | 0 | - | 4.87 | 68,366 |
| Australia A-Z | 0 | - | 4.48 | 38,599 |
| Countries that Beat Australia | 0 | - | 4.84 | 70,839 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,387 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 159,101 |
| Top 10 Richest Countries in Europe | 0 | - | 4.88 | 136,487 |
| Biggest Trading Partners - European Union | 0 | - | 4.90 | 65,464 |
| Category Elimination - European Countries #1 | 0 | - | 4.88 | 77,438 |
| The Trojan War | 0 | - | 4.81 | 36,162 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 588,169 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.81 | 86,393 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 72,072 |
| Roman Emperors | 0 | - | 4.95 | 96,769 |
| Geography of the Dutch Empire | 0 | - | 4.70 | 32,557 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 74,992 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 50,597 |
| Invasions of Great Britain | 0 | - | 4.49 | 55,863 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.90 | 62,292 |
| Pope Facts | 0 | - | 4.41 | 28,089 |
| Biggest Trading Partners - Turkey | 0 | - | 4.82 | 45,439 |
| Biggest Trading Partners - China | 0 | - | 4.96 | 70,551 |
| Countries with the Most Hindus | 0 | - | 4.91 | 114,002 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 48,736 |
| Biggest Trading Partners - South Africa | 0 | - | 4.82 | 37,849 |
| U.S. Vice Presidents | 0 | - | 4.42 | 120,745 |
| U.S. Presidential Trivia #1 | 0 | - | 4.51 | 97,726 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.57 | 82,408 |
| U.S. Presidential Trivia #2 | 0 | - | 4.51 | 40,142 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 80,535 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,663 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 488,376 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.32 | 40,050 |
| The Reign of Napoleon | 0 | - | 4.53 | 36,271 |
| Biggest Trading Partners - Germany | 0 | - | 4.98 | 63,227 |
| Olympian Gods Quiz | 0 | - | 4.96 | 459,328 |
| Name that Greek Letter | 0 | - | 4.94 | 297,236 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 100,492 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 178,235 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.58 | 24,661 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 257,160 |
| Countries Closest to Israel | 0 | - | 4.88 | 99,117 |
| The Vietnam War | 0 | - | 4.41 | 33,012 |
| African Countries by First 2 Letters | 0 | - | 4.95 | 246,981 |
| Famous Australians by Picture | 0 | - | 4.28 | 25,526 |
| Biggest Trading Partners - Colombia | 0 | - | 4.89 | 35,884 |
| U.S. Bill of Rights | 0 | - | 4.53 | 31,148 |
| American Political Words | 0 | - | 4.41 | 22,386 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.33 | 10,403 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.43 | 280,982 |
| Name a Valid U.S. President #2 | 0 | - | 4.52 | 61,803 |
| The American Revolution | 0 | - | 4.51 | 51,879 |
| Category Elimination - U.S. States #1 | 0 | - | 4.90 | 196,316 |
| Europe Map Quiz | 0 | - | 5.00 | 4,323,789 |
| European Secessionist Movements on a Map | 0 | - | 4.51 | 31,667 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 148,942 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 170,641 |
| Ancient Greek Words | 0 | - | 4.90 | 98,386 |
| Communist Countries in History | 0 | - | 4.65 | 458,271 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 402,115 |
| The Vikings! | 0 | - | 4.45 | 27,204 |
| The Portuguese Empire | 0 | - | 4.54 | 11,374 |
| Arthurian Legend | 0 | - | 4.35 | 24,328 |
| Wives of King Henry VIII | 0 | - | 4.53 | 44,808 |
| Countries the UK Declared War On | 0 | - | 4.58 | 113,059 |
| Geography of the British Empire | 0 | - | 4.51 | 37,221 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,350,871 |
| Asia Map Quiz | 0 | - | 4.99 | 793,337 |
| History of Iran Quiz | 0 | - | 4.63 | 15,176 |
| History of China | 0 | - | 4.40 | 50,871 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 98,936 |
| History of India | 0 | - | 4.52 | 19,379 |
| Africa Map Quiz | 0 | - | 5.00 | 1,950,835 |
| African Countries with the Most Muslims | 0 | - | 4.76 | 81,437 |
| History of South Africa | 0 | - | 4.59 | 16,634 |
| Oceania Map Quiz | 0 | - | 4.98 | 572,240 |
| Australian Capitals | 0 | - | 4.92 | 60,987 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.11 | 25,151 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.08 | 14,808 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.17 | 10,143 |
| Governors Who Ran For President | 0 | - | 4.47 | 18,948 |
| U.S. Presidents by Event | 0 | - | 4.58 | 29,263 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 25,937 |
| First Ladies of the United States | 0 | - | 4.27 | 80,278 |
| Presidential Middle Names | 0 | - | 4.37 | 56,336 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 24,913 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.31 | 65,409 |
| Random U.S. Vice President to President | 0 | - | 4.55 | 27,583 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.63 | 14,031 |
| Add a Letter - Make a U.S. President | 0 | - | 4.66 | 22,099 |
| Count to 10 in Europe: Pro | 0 | - | 4.81 | 61,393 |
| Official European Union Languages | 0 | - | 4.98 | 202,462 |
| European Countries in their Native Language | 0 | - | 4.99 | 145,260 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 389,538 |
| Countries of Europe After World War II | 0 | - | 4.98 | 172,088 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 140,677 |
| History of Russia Quiz | 0 | - | 4.48 | 30,001 |
| Countries of the Soviet Union | 0 | - | 4.98 | 185,555 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 74,912 |
| History of Austria | 0 | - | 4.69 | 16,486 |
| Geography of the French Empire | 0 | - | 4.49 | 25,518 |
| The French Revolution | 0 | - | 4.45 | 22,053 |
| History of France Quiz | 0 | - | 4.55 | 39,863 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 22,319 |
| Figures from Greek Mythology | 0 | - | 4.92 | 170,202 |
| History of Ireland Quiz | 0 | - | 4.44 | 19,050 |
| History of Italy | 0 | - | 4.49 | 29,909 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 78,778 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 40,197 |
| Countries by Founding Story | 0 | - | 4.92 | 55,395 |
| Independence from Whom | 0 | - | 4.99 | 187,481 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,541 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,484 |
| Geography of the Roman Empire | 0 | - | 4.57 | 48,726 |
| Roman Names for Places | 0 | - | 4.66 | 41,896 |
| Byzantine History | 0 | - | 4.87 | 26,385 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 72,866 |
| History of The Netherlands | 0 | - | 4.43 | 15,858 |
| Geography of the Spanish Empire | 0 | - | 4.48 | 35,353 |
| Countries that Beat Switzerland | 0 | - | 4.87 | 38,018 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 24,817 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.76 | 19,070 |
| Houses of British Monarchs | 0 | - | 4.50 | 52,477 |
| Medieval English History | 0 | - | 4.52 | 41,006 |
| British History Multiple Choice #1 | 0 | - | 4.47 | 51,800 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.56 | 13,842 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 80,861 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,287,321 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.16 | 14,551 |
| The Iraq War | 0 | - | 4.45 | 14,444 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 15,790 |
| History of Egypt | 0 | - | 4.56 | 22,329 |
| Chinese Inventions | 0 | - | 4.26 | 32,656 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.57 | 52,010 |
| Hindu Countries | 0 | - | 4.72 | 33,312 |
| Countries of Africa | 0 | - | 5.00 | 2,192,462 |
| African East Coast | 0 | - | 4.97 | 85,002 |
| Western Africa Map Quiz | 0 | - | 4.97 | 61,595 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 40,966 |
| Cultural Symbols of Australia | 0 | - | 4.23 | 46,482 |
| Australian Animals By Picture | 0 | - | 4.44 | 29,380 |
| American Countries on the Pacific Coast | 0 | - | 4.81 | 46,471 |
| History of Mexico | 0 | - | 4.55 | 13,988 |
| United States Map Quiz | 0 | - | 4.98 | 3,919,674 |
| U.S. States by Governor Quiz | 0 | - | 4.42 | 17,007 |
| U.S. Political Parties in History | 0 | - | 4.43 | 26,256 |
| U.S. Government Agencies | 0 | - | 4.41 | 17,785 |
| U.S. Presidential Quotes | 0 | - | 4.36 | 42,815 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,584 |
| U.S. Presidents Who Died in Office | 0 | - | 4.75 | 31,360 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 37,711 |
| U.S. President Scramble | 0 | - | 4.37 | 91,455 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.46 | 21,009 |
| People in Pictures with Barack Obama | 0 | - | 4.11 | 45,237 |
| U.S. History for Dummies | 0 | - | 4.49 | 65,866 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 196,342 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.93 | 87,034 |
