| Prime Ministers of the UK | 0 | - | 4.96 | 434,665 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,048 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,684 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,977 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,654,796 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,264 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,266 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,739 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,377 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,438 |
| National Founders | 0 | - | 4.40 | 83,651 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,883 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,670 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,784 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,999 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,593 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,563 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,518 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,618 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,575 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,342 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,873 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,680 |
| US States Quiz | 0 | - | 5.00 | 16,701,939 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,953 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,429 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,421 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,116 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,022 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,638 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,521 |
| Political Movements by Country | 0 | - | 4.46 | 72,262 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,906 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,865 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,366 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,041 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,529 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,148 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,267 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,955 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,294 |
| Name the English Monarchs | 0 | - | 4.92 | 497,942 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,164 |
| Countries of the Popes | 0 | - | 4.79 | 127,227 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,276 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,256 |
| Hindu Countries | 0 | - | 4.86 | 49,584 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,182 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,959 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 124,253 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,458 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,069 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,284 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,329 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,809 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,093 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,424 |
| American Political Words | 0 | - | 4.39 | 23,341 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,073 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,463 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,807 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,487 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,595 |
| US States with an Empty Map | 0 | - | 5.00 | 618,877 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,722 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,158 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,113 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,957 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,976 |
| The Trojan War | 0 | - | 4.83 | 39,429 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,963 |
| Name that Greek Letter | 0 | - | 4.94 | 321,685 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,542 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,051 |
| Roman Emperors | 0 | - | 4.95 | 118,495 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,376 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,143 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,502 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,360 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,948 |
| Rivers of the United States | 0 | - | 4.93 | 65,523 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.50 | 39,861 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,348 |
| Arms Exports - United States | 0 | - | 4.70 | 54,363 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,947 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,955 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,508 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,005 |
| Presidential Middle Names | 0 | - | 4.41 | 59,712 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,743 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,823 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,176 |
| American Founding Fathers | 0 | - | 4.41 | 23,074 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,319 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,448 |
| People on Money - United States | 0 | - | 4.31 | 63,206 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,243 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,731 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,189 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,095 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 40,975 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.46 | 52,132 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,728 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,194 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 36,980 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,585 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,270 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,273 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,481 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,877 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,665 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,074 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 118,564 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,092 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,554 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,362 |
| History of Russia Quiz | 0 | - | 4.49 | 31,795 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,289 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,682 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,782 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,199 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,302 |
| History of Italy | 0 | - | 4.55 | 31,817 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,482 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,982 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,506 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,398 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,517 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,820 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,683 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,540 |
| South America Flags Map Quiz | 0 | - | 4.95 | 86,630 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,385 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,746 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,426 |
| The American Revolution | 0 | - | 4.52 | 54,058 |
| American History Quotes #1 | 0 | - | 4.37 | 95,693 |
| American History Quotes #2 | 0 | - | 4.38 | 41,226 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,078 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,518,757 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,473 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,183 |
| U.S. States Richer than Their Neighbors | 0 | - | 4.43 | 27,213 |
| U.S. States by Unofficial Motto | 0 | - | 4.47 | 22,998 |
| A Superlative for Every U.S. State | 0 | - | 4.44 | 27,919 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,020 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,732 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,661 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 17,819 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,553 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,748 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,475 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,550 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,475 |
| Ancient Greek Words | 0 | - | 4.92 | 110,707 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,314 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,686 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,924 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,394 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,542 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,110 |
| The Vietnam War | 0 | - | 4.43 | 35,296 |
| Communist Countries in History | 0 | - | 4.63 | 492,537 |
| History of India | 0 | - | 4.61 | 21,286 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,430 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,411 |
| History of South Africa | 0 | - | 4.60 | 17,602 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,355 |
| Australian Capitals | 0 | - | 4.92 | 62,594 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,478 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,302 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,168 |
| First Ladies of the United States | 0 | - | 4.28 | 85,246 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,112 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,300 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,002 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,837 |
| Animals in American History | 0 | - | 4.20 | 27,910 |
| Most Visited U.S. States by JetPunkers | 0 | - | 4.35 | 44,341 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,689 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,584 |
| Official European Union Languages | 0 | - | 4.97 | 236,559 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,707 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,216 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,749 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,358 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,847 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,241 |
| History of Austria | 0 | - | 4.70 | 17,748 |
| Geography of the French Empire | 0 | - | 4.48 | 26,935 |
| The French Revolution | 0 | - | 4.46 | 23,785 |
| History of France | 0 | - | 4.59 | 56,056 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,384 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,934 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,965 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,581 |
| The Vikings! | 0 | - | 4.46 | 28,246 |
| The Portuguese Empire | 0 | - | 4.54 | 11,991 |
| Arthurian Legend | 0 | - | 4.33 | 25,050 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,179 |
