| Prime Ministers of the UK | 0 | - | 4.96 | 434,618 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,037 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,677 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,974 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,654,041 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,245 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,250 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,734 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,375 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,426 |
| National Founders | 0 | - | 4.40 | 83,647 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,880 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,669 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,706 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,998 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,533 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,531 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,495 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,614 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,574 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,322 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,835 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,667 |
| US States Quiz | 0 | - | 5.00 | 16,699,666 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,941 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,413 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,403 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,108 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,013 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,634 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,520 |
| Political Movements by Country | 0 | - | 4.46 | 72,259 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,887 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,858 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,360 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,943 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,526 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,142 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,252 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,944 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,266 |
| Name the English Monarchs | 0 | - | 4.92 | 497,854 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,149 |
| Countries of the Popes | 0 | - | 4.79 | 127,205 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,248 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,238 |
| Hindu Countries | 0 | - | 4.85 | 49,570 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,172 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,954 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 124,224 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,443 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,064 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,279 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,311 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,804 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,073 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,413 |
| American Political Words | 0 | - | 4.39 | 23,340 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,073 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,461 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,807 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,478 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,577 |
| US States with an Empty Map | 0 | - | 5.00 | 618,798 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,705 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,143 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,105 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,929 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,966 |
| The Trojan War | 0 | - | 4.83 | 39,425 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,850 |
| Name that Greek Letter | 0 | - | 4.94 | 321,650 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,529 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,043 |
| Roman Emperors | 0 | - | 4.95 | 118,479 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,369 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,134 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,490 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,337 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,942 |
| Rivers of the United States | 0 | - | 4.93 | 65,509 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 39,630 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,341 |
| Arms Exports - United States | 0 | - | 4.70 | 54,346 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,929 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,946 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,488 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,999 |
| Presidential Middle Names | 0 | - | 4.41 | 59,700 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,732 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,815 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,169 |
| American Founding Fathers | 0 | - | 4.41 | 23,074 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,310 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,441 |
| People on Money - United States | 0 | - | 4.31 | 63,205 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,240 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,729 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,186 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,088 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 40,974 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.46 | 51,948 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,696 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,192 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 36,979 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,572 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,262 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,270 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,477 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,862 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,656 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,059 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 118,557 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,086 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,548 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,325 |
| History of Russia Quiz | 0 | - | 4.49 | 31,791 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,288 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,675 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,768 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,075 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,279 |
| History of Italy | 0 | - | 4.55 | 31,814 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,480 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,979 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,505 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,385 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,505 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,820 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,679 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,521 |
| South America Flags Map Quiz | 0 | - | 4.95 | 86,610 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,356 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,743 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,410 |
| The American Revolution | 0 | - | 4.52 | 54,054 |
| American History Quotes #1 | 0 | - | 4.37 | 95,687 |
| American History Quotes #2 | 0 | - | 4.38 | 41,223 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,076 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,518,454 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,437 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,180 |
| U.S. States Richer than Their Neighbors | 0 | - | 4.43 | 27,211 |
| U.S. States by Unofficial Motto | 0 | - | 4.47 | 22,995 |
| A Superlative for Every U.S. State | 0 | - | 4.44 | 27,912 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,018 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,731 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,649 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 17,816 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,055 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,743 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,459 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,452 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,459 |
| Ancient Greek Words | 0 | - | 4.92 | 110,686 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,313 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,673 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,908 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,394 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,539 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,093 |
| The Vietnam War | 0 | - | 4.43 | 35,294 |
| Communist Countries in History | 0 | - | 4.63 | 492,491 |
| History of India | 0 | - | 4.61 | 21,283 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,218 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,409 |
| History of South Africa | 0 | - | 4.60 | 17,602 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,271 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,475 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,302 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,164 |
| First Ladies of the United States | 0 | - | 4.28 | 85,242 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,110 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,275 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,999 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,832 |
| Animals in American History | 0 | - | 4.20 | 27,910 |
| Most Visited U.S. States by JetPunkers | 0 | - | 4.35 | 44,338 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,685 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,577 |
| Official European Union Languages | 0 | - | 4.97 | 236,513 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,699 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,186 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,732 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,347 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,826 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,234 |
| History of Austria | 0 | - | 4.70 | 17,746 |
| Geography of the French Empire | 0 | - | 4.48 | 26,930 |
| The French Revolution | 0 | - | 4.46 | 23,784 |
| History of France | 0 | - | 4.59 | 56,034 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,383 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,931 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,932 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,515 |
| The Vikings! | 0 | - | 4.45 | 28,244 |
| The Portuguese Empire | 0 | - | 4.54 | 11,990 |
| Arthurian Legend | 0 | - | 4.33 | 25,050 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,173 |
