| Prime Ministers of the UK | 0 | - | 4.95 | 442,024 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,885 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,178 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,524 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,723,360 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,703 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,582 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,132 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,922 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,386 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,591 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,200 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,516 |
| National Founders | 0 | - | 4.40 | 83,957 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,139 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,859 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,310 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,405 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,126 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,446 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,331 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,490 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,122 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,484 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,744 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,749 |
| Name a Valid U.S. President #1 | 0 | - | 4.90 | 193,656 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,830 |
| US States Quiz | 0 | - | 5.00 | 16,984,258 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,274 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,167 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,667 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,768 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,505 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,923 |
| Political Movements by Country | 0 | - | 4.46 | 72,747 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 335,112 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,077 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,733 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,591 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,615 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,652 |
| Name the English Monarchs | 0 | - | 4.91 | 506,047 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,855 |
| Countries of the Popes | 0 | - | 4.79 | 128,676 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 97,904 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,056 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,445 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,047 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,266 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,959 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,798 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 127,342 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,336 |
| Countries Bordering Brazil | 0 | - | 4.96 | 132,207 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,863 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,970 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,372 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,373 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,121 |
| American Political Words | 0 | - | 4.39 | 23,467 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,212 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,561 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.22 | 10,900 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,384 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,214 |
| US States with an Empty Map | 0 | - | 5.00 | 628,218 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,975 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,076 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,260 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,095 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,987 |
| The Trojan War | 0 | - | 4.83 | 39,962 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,499 |
| Name that Greek Letter | 0 | - | 4.93 | 324,870 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,855 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,554 |
| Roman Emperors | 0 | - | 4.95 | 121,092 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,608 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,337 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,825 |
| Hindu Countries | 0 | - | 4.87 | 50,550 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,937 |
| Rivers of the United States | 0 | - | 4.93 | 66,621 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 52,943 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,862 |
| Arms Exports - United States | 0 | - | 4.77 | 62,703 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,459 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,264 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,578 |
| Presidential Middle Names | 0 | - | 4.41 | 60,688 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,656 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,877 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,617 |
| American Founding Fathers | 0 | - | 4.42 | 23,273 |
| Countries Closest to Alaska | 0 | - | 4.93 | 125,056 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,556 |
| People on Money - United States | 0 | - | 4.31 | 63,428 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,580 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,201 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,718 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,559 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,135 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,777 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,423 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,456 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,179 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 50,050 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,928 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,666 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,750 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,795 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,413 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,762 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.46 | 119,316 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,428 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,179 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,260 |
| History of Russia Quiz | 0 | - | 4.47 | 31,998 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,632 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,119 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,972 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,494 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,385 |
| History of Italy | 0 | - | 4.55 | 32,137 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,810 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,412 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,964 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,074 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,914 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 51,165 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,056 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,480 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,529 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,730 |
| South America Flags Map Quiz | 0 | - | 4.95 | 88,849 |
| Names of Generations | 0 | - | 4.09 | 45,479 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,121 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,182 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,543 |
| The American Revolution | 0 | - | 4.52 | 54,347 |
| American History Quotes #1 | 0 | - | 4.37 | 96,187 |
| American History Quotes #2 | 0 | - | 4.38 | 41,500 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,328 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,554,359 |
| U.S. States that Border Canada | 0 | - | 4.91 | 186,512 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,535 |
| U.S. States Richer than Their Neighbors | 0 | - | 4.43 | 27,435 |
| U.S. States by Unofficial Motto | 0 | - | 4.47 | 23,213 |
| A Superlative for Every U.S. State | 0 | - | 4.44 | 28,209 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,364 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,873 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,411 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 18,108 |
| Europe Map Quiz | 0 | - | 5.00 | 4,785,167 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,168 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 162,217 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,430 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,205 |
| Ancient Greek Words | 0 | - | 4.93 | 112,383 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,563 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,732 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,618 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,788 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 29,005 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,551 |
| The Vietnam War | 0 | - | 4.44 | 35,641 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,245 |
| Communist Countries in History | 0 | - | 4.63 | 497,936 |
| History of South Africa | 0 | - | 4.60 | 17,756 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,805 |
| Australian Capitals | 0 | - | 4.92 | 62,823 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,960 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,359 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,925 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,356 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,757 |
| First Ladies of the United States | 0 | - | 4.28 | 85,924 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,306 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,451 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,354 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,088 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.31 | 57,972 |
| Animals in American History | 0 | - | 4.20 | 28,104 |
| Most Visited U.S. States by JetPunkers | 0 | - | 4.30 | 44,657 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,936 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,676 |
| Official European Union Languages | 0 | - | 4.97 | 239,672 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,568 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,621 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,272 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,352 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,497 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,115 |
| History of Austria | 0 | - | 4.70 | 17,968 |
| Geography of the French Empire | 0 | - | 4.45 | 27,208 |
| The French Revolution | 0 | - | 4.47 | 24,135 |
| History of France | 0 | - | 4.61 | 57,563 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,554 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,574 |
