| Prime Ministers of the UK | 0 | - | 4.96 | 435,617 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,534 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,744 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,794 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,394 |
| US States Quiz | 0 | - | 5.00 | 16,742,704 |
| U.S. States that Border Canada | 0 | - | 4.91 | 183,076 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,034 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,899 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,991 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,916 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,683 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,665,135 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,464 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,875 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,255 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,637 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,875 |
| US States with an Empty Map | 0 | - | 5.00 | 620,187 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,036 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,246 |
| Rivers of the United States | 0 | - | 4.93 | 65,689 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,594 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,620 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,189 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,788 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,067 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,901 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,310 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,635 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,574 |
| National Founders | 0 | - | 4.40 | 83,691 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,053 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.50 | 41,169 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,437 |
| Arms Exports - United States | 0 | - | 4.73 | 60,377 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,090 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,472 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,824 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,377 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,616 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,268 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.46 | 53,319 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,331 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,515 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,139 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,778 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,017 |
| American Political Words | 0 | - | 4.39 | 23,357 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,004 |
| American Founding Fathers | 0 | - | 4.41 | 23,090 |
| People on Money - United States | 0 | - | 4.31 | 63,234 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,293 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,775 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,523,136 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,183 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,011 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,239 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 36,999 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,379 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 118,630 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,645 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,732 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,596 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,565 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,314 |
| American History Quotes #1 | 0 | - | 4.37 | 95,738 |
| American History Quotes #2 | 0 | - | 4.38 | 41,251 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,115 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,246 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,671 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,704 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,335 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,681 |
| Political Movements by Country | 0 | - | 4.46 | 72,335 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,122 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,010 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,305 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,542 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,900 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,394 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,085 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,337 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,434 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,642 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,693 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 744,174 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,521 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,311 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,888 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,026 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,807 |
| Richest Metro Areas in the U.S. | 0 | - | 4.42 | 43,332 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,603 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,220 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,383,423 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,230 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,668,306 |
| U.S. States Richer than Their Neighbors | 0 | - | 4.43 | 27,270 |
| Most Visited U.S. States by JetPunkers | 0 | - | 4.35 | 44,389 |
| A Superlative for Every U.S. State | 0 | - | 4.44 | 27,954 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,079 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,764 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 17,858 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,223 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,425 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,630 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,256 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,218 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,068 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,587 |
| Name the English Monarchs | 0 | - | 4.92 | 499,090 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,378 |
| Countries of the Popes | 0 | - | 4.79 | 127,429 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,564 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,494 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 114,965 |
| Hindu Countries | 0 | - | 4.86 | 49,699 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,081 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,204 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,352 |
| Costa Rica Country Quiz | 0 | - | 4.75 | 31,984 |
| Cuba Country Quiz | 0 | - | 4.69 | 51,263 |
| Names of Generations | 0 | - | 4.00 | 22,823 |
| State Quiz - Alaska | 0 | - | 4.42 | 41,853 |
| State Quiz - Arizona | 0 | - | 4.44 | 36,555 |
| California Cities Map Quiz | 0 | - | 4.50 | 87,706 |
| State Quiz - California | 0 | - | 4.68 | 64,091 |
| State Quiz - Florida | 0 | - | 4.47 | 62,043 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,682 |
| Countries that Visit Florida the Most | 0 | - | 4.72 | 71,512 |
| State Quiz - Georgia | 0 | - | 4.48 | 35,392 |
| Countries Closest to Hawaii | 0 | - | 4.54 | 53,329 |
| State Quiz - Illinois | 0 | - | 4.44 | 33,221 |
| State Quiz - Kentucky | 0 | - | 4.41 | 32,299 |
| State Quiz - Minnesota | 0 | - | 4.41 | 38,622 |
| New York Cities Map Quiz | 0 | - | 4.54 | 42,078 |
| State Quiz - New York | 0 | - | 4.52 | 45,847 |
| State Quiz - New Jersey | 0 | - | 4.42 | 37,963 |
| State Quiz - Texas | 0 | - | 4.43 | 62,601 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,079 |
| State Quiz - Pennsylvania | 0 | - | 4.50 | 48,733 |
| State Quiz - Tennessee | 0 | - | 4.54 | 33,972 |
| State Quiz - Virginia | 0 | - | 4.52 | 40,114 |
| State Quiz - Washington | 0 | - | 4.45 | 36,234 |
| U.S. History A-Z #1 | 0 | - | 4.35 | 29,640 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,525 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,708 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.74 | 38,356 |
| U.S. States by Clue #1 | 0 | - | 4.50 | 38,729 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,714 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,520 |
| U.S. States with More Cows than People | 0 | - | 4.63 | 40,470 |
| U.S. States with Spanish Names | 0 | - | 4.50 | 87,450 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 32,433 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 76,598 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 34,952 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 48,784 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,639 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,492 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,486 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,528 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,489 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,602 |
| U.S. States with the Fewest Borders | 0 | - | 4.77 | 113,156 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,246 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,680,370 |
| O Canada Lyrics | 0 | - | 4.47 | 50,830 |
| Canada by Picture | 0 | - | 4.25 | 18,414 |
| Biggest Cities in Canada | 0 | - | 4.54 | 132,022 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,344 |
| The Trojan War | 0 | - | 4.83 | 39,501 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,371 |
| Name that Greek Letter | 0 | - | 4.94 | 322,120 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,886 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,173 |
| Roman Emperors | 0 | - | 4.95 | 118,816 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,518 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,084 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 73,673 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,627 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,616 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,301 |
| U.S. Geography by Letter - P | 0 | - | 4.36 | 47,725 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 52,900 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 40,731 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 38,860 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,635 |
| Panama Country Quiz | 0 | - | 4.61 | 25,647 |
| Dominican Republic Country Quiz | 0 | - | 4.61 | 23,266 |
| Topological Map of the USA Quiz | 0 | - | 4.49 | 28,907 |
| U.S. Vice Presidents | 0 | - | 4.41 | 135,348 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,120 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,726 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,173 |
| Presidential Middle Names | 0 | - | 4.41 | 59,818 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,860 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,977 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,799 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,226 |
