| Prime Ministers of the UK | 0 | - | 4.95 | 437,089 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,174 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,814 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,334 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,679,812 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,711 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 125,326 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,295 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,481 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,752 |
| National Founders | 0 | - | 4.40 | 83,761 |
| Biggest Cities in Brazil | 0 | - | 4.56 | 52,954 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,035 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,728 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,346 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,042 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,603 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,937 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,007 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,911 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,544 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,737 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,810 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,897 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,636 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,439 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,268 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,867 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,962 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,732 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,279 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,668 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 75,965 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,090 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,577 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,469 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,005 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,701 |
| Countries of the Popes | 0 | - | 4.79 | 127,699 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,813 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 120,307 |
| The Vietnam War | 0 | - | 4.43 | 35,434 |
| Political Movements by Country | 0 | - | 4.46 | 72,417 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,617 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,878 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,221 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,335 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,932 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,486 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,609 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,215 |
| Name that Greek Letter | 0 | - | 4.93 | 322,789 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,189 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,790 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,418 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,952 |
| Name the English Monarchs | 0 | - | 4.91 | 500,627 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,723 |
| Hindu Countries | 0 | - | 4.86 | 49,895 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,303 |
| Rivers of the United States | 0 | - | 4.93 | 65,923 |
| Arms Exports - United States | 0 | - | 4.75 | 62,123 |
| American Political Words | 0 | - | 4.39 | 23,389 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,367 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,043 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,415 |
| Presidential Middle Names | 0 | - | 4.41 | 59,988 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,055 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,290 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,303 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,938 |
| Countries Closest to Maine | 0 | - | 4.85 | 66,842 |
| The American Civil War | 0 | - | 4.62 | 52,321 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 504,595 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,383 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,263 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,049 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,092 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,501 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,410 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,853 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,172 |
| The Trojan War | 0 | - | 4.83 | 39,604 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,316 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,247 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,339 |
| Roman Emperors | 0 | - | 4.95 | 119,445 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,657 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 79,981 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,441 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,898 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,907 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,262 |
| South America Flags Map Quiz | 0 | - | 4.95 | 87,384 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,873 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,370 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,881 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,747 |
| The American Revolution | 0 | - | 4.52 | 54,170 |
| Hawaiian Islands | 0 | - | 4.83 | 42,587 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,236 |
| American History Quotes #1 | 0 | - | 4.37 | 95,902 |
| American History Quotes #2 | 0 | - | 4.38 | 41,342 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,190 |
| U.S. State Flags | 0 | - | 4.89 | 169,199 |
| U.S. States that Border Canada | 0 | - | 4.91 | 183,952 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,934 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,136 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,056 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,608 |
| History of Russia Quiz | 0 | - | 4.49 | 31,861 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,311 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,886 |
| Ancient Greek Words | 0 | - | 4.93 | 111,197 |
| History of Italy | 0 | - | 4.55 | 31,915 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,398 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,502 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,590 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,124 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,021 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,755 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,464 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,675 |
| History of India | 0 | - | 4.61 | 21,369 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,595 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,681 |
| History of South Africa | 0 | - | 4.60 | 17,647 |
| Biggest Cities in Colombia Quiz | 0 | - | 4.44 | 14,599 |
| Puerto Rico Trivia | 0 | - | 4.51 | 11,975 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,178 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,127 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,496 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,849 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,799 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,214 |
| First Ladies of the United States | 0 | - | 4.28 | 85,420 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,890 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,171 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,769 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,108 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,902 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,530,037 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 42,876 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,300 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,160 |
| U.S. States Richer than Their Neighbors | 0 | - | 4.43 | 27,324 |
| Most Visited U.S. States by JetPunkers | 0 | - | 4.30 | 44,457 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 22,990 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,750 |
| Europe Map Quiz | 0 | - | 5.00 | 4,749,494 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,873 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,430 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,817 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,034 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,309 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,836 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,524 |
| History of Austria | 0 | - | 4.70 | 17,816 |
| Geography of the French Empire | 0 | - | 4.45 | 27,011 |
| The French Revolution | 0 | - | 4.46 | 23,879 |
| History of France | 0 | - | 4.59 | 56,696 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,445 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,156 |
| Mythology A-Z | 0 | - | 4.31 | 37,134 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,074 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 102,163 |
| The Vikings! | 0 | - | 4.46 | 28,301 |
| The Portuguese Empire | 0 | - | 4.58 | 12,038 |
| Arthurian Legend | 0 | - | 4.33 | 25,083 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,504 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,284 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,183 |
| Geography of the British Empire | 0 | - | 4.48 | 39,605 |
| Pope Facts | 0 | - | 4.39 | 31,153 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,381 |
| History of Iran | 0 | - | 4.66 | 16,318 |
| The Iraq War | 0 | - | 4.47 | 15,618 |
| History of China | 0 | - | 4.37 | 56,955 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,096 |
| Communist Countries in History | 0 | - | 4.63 | 494,325 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,349 |
| Countries of Africa | 0 | - | 5.00 | 2,524,791 |
| Africa Map Quiz | 0 | - | 5.00 | 2,112,262 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,393 |
| African East Coast | 0 | - | 4.96 | 95,636 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,466 |
| Oceania Map Quiz | 0 | - | 4.98 | 639,256 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,302 |
| Australian Capitals | 0 | - | 4.92 | 62,673 |
| Australia A-Z | 0 | - | 4.54 | 49,901 |
| Australia Map Quiz | 0 | - | 4.94 | 343,504 |
| History of Mexico | 0 | - | 4.58 | 15,279 |
| United States Map Quiz | 0 | - | 4.98 | 4,150,107 |
| U.S. States by Governor | 0 | - | 4.43 | 18,026 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,634 |
| Mayors of New York City | 0 | - | 3.96 | 12,184 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,622 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,165 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 623,530 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,425 |
