| Prime Ministers of the UK | 0 | - | 4.95 | 438,298 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,462 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,899 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,273 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,692,153 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,636 |
| Country by Photo of its Leader | 0 | - | 4.72 | 123,957 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,950 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,315 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,515 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,898 |
| National Founders | 0 | - | 4.40 | 83,811 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,067 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,776 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,145 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,927 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,059 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,276 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,544 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,998 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,695 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,054 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,666 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,287 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,528 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,205 |
| US States Quiz | 0 | - | 5.00 | 16,849,436 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,020 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 79,876 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,448 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,822 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,726 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,779 |
| Political Movements by Country | 0 | - | 4.46 | 72,492 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,711 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,521 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,477 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,454 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,835 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,440 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,186 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,282 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,389 |
| Name the English Monarchs | 0 | - | 4.91 | 501,963 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,006 |
| Countries of the Popes | 0 | - | 4.79 | 127,985 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,117 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 133,492 |
| Hindu Countries | 0 | - | 4.86 | 50,068 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,200 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,505 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,454 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 125,818 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 130,313 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,486 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,549 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,675 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,130 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,730 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,240 |
| American Political Words | 0 | - | 4.39 | 23,405 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,141 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,510 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,855 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,989 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,474 |
| US States with an Empty Map | 0 | - | 5.00 | 623,785 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,863 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,582 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,755 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,010 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,915 |
| The Trojan War | 0 | - | 4.83 | 39,674 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,636 |
| Name that Greek Letter | 0 | - | 4.93 | 323,250 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,661 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,464 |
| Roman Emperors | 0 | - | 4.95 | 119,786 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,008 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,699 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,174 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,935 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,387 |
| Rivers of the United States | 0 | - | 4.93 | 66,113 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 42,063 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,623 |
| Arms Exports - United States | 0 | - | 4.75 | 62,331 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,598 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,347 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,682 |
| Presidential Middle Names | 0 | - | 4.41 | 60,165 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,243 |
| Assassinated U.S. Presidents | 0 | - | 4.62 | 94,514 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,387 |
| American Founding Fathers | 0 | - | 4.42 | 23,211 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,196 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,030 |
| People on Money - United States | 0 | - | 4.31 | 63,328 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,430 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,019 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,463 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,335 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,069 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,017 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,618 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,326 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,088 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,315 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,599 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,494 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,611 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,562 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,496 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,885 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 119,053 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,277 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,856 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,129 |
| History of Russia Quiz | 0 | - | 4.47 | 31,899 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,460 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,926 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,392 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,230 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,722 |
| History of Italy | 0 | - | 4.55 | 31,955 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,636 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,196 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,758 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,824 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,251 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,680 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,932 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,116 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,010 |
| South America Flags Map Quiz | 0 | - | 4.95 | 87,735 |
| Names of Generations | 0 | - | 4.09 | 44,607 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,764 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,956 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,921 |
| The American Revolution | 0 | - | 4.52 | 54,229 |
| American History Quotes #1 | 0 | - | 4.37 | 95,989 |
| American History Quotes #2 | 0 | - | 4.38 | 41,382 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,226 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,535,905 |
| U.S. States that Border Canada | 0 | - | 4.91 | 184,583 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,354 |
| U.S. States Richer than Their Neighbors | 0 | - | 4.43 | 27,352 |
| U.S. States by Unofficial Motto | 0 | - | 4.47 | 23,114 |
| A Superlative for Every U.S. State | 0 | - | 4.44 | 28,068 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,202 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,804 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,048 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 17,964 |
| Europe Map Quiz | 0 | - | 5.00 | 4,758,544 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,942 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,343 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,661 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,851 |
| Ancient Greek Words | 0 | - | 4.93 | 111,451 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,428 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,185 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,732 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,632 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,772 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,850 |
| The Vietnam War | 0 | - | 4.44 | 35,500 |
| Communist Countries in History | 0 | - | 4.63 | 495,222 |
| History of India | 0 | - | 4.62 | 21,409 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,990 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,846 |
| History of South Africa | 0 | - | 4.60 | 17,673 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,297 |
| Australian Capitals | 0 | - | 4.92 | 62,709 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,708 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,328 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,149 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,247 |
| First Ladies of the United States | 0 | - | 4.28 | 85,584 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,212 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,001 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,173 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,944 |
| Animals in American History | 0 | - | 4.20 | 28,009 |
| Most Visited U.S. States by JetPunkers | 0 | - | 4.30 | 44,505 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,812 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,053 |
| Official European Union Languages | 0 | - | 4.97 | 238,291 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,717 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,821 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,197 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,382 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,485 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,663 |
| History of Austria | 0 | - | 4.70 | 17,849 |
| Geography of the French Empire | 0 | - | 4.45 | 27,040 |
| The French Revolution | 0 | - | 4.46 | 23,920 |
| History of France | 0 | - | 4.59 | 56,910 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,258 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,640 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,646 |
