| Prime Ministers of the UK | 0 | - | 4.96 | 435,652 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,539 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,748 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,797 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,394 |
| US States Quiz | 0 | - | 5.00 | 16,743,990 |
| U.S. States that Border Canada | 0 | - | 4.91 | 183,088 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,058 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,916 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 329,018 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,916 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,684 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,665,467 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,474 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,881 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,264 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,644 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,879 |
| US States with an Empty Map | 0 | - | 5.00 | 620,233 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,046 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,257 |
| Rivers of the United States | 0 | - | 4.93 | 65,692 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,602 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,625 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,210 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,792 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,077 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,909 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,318 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,638 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,576 |
| National Founders | 0 | - | 4.40 | 83,692 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,055 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.50 | 41,184 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,440 |
| Arms Exports - United States | 0 | - | 4.73 | 60,656 |
| 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 | 424,402 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,619 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,272 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.46 | 53,342 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,332 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,516 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,140 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,781 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,017 |
| American Political Words | 0 | - | 4.39 | 23,361 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,017 |
| American Founding Fathers | 0 | - | 4.41 | 23,091 |
| People on Money - United States | 0 | - | 4.31 | 63,234 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,294 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,777 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,523,281 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,184 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,011 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,241 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 37,000 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,389 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 118,633 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,655 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,734 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,596 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,576 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,329 |
| American History Quotes #1 | 0 | - | 4.37 | 95,741 |
| American History Quotes #2 | 0 | - | 4.38 | 41,252 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,117 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,255 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,677 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,713 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,337 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,681 |
| Political Movements by Country | 0 | - | 4.46 | 72,339 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,129 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,014 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,316 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,562 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,905 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,395 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,090 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,339 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,435 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,652 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,704 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 744,225 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,531 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,311 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,893 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,032 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,816 |
| Richest Metro Areas in the U.S. | 0 | - | 4.42 | 43,336 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,606 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,223 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,383,595 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,236 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,668,389 |
| U.S. States Richer than Their Neighbors | 0 | - | 4.43 | 27,271 |
| Most Visited U.S. States by JetPunkers | 0 | - | 4.35 | 44,391 |
| A Superlative for Every U.S. State | 0 | - | 4.44 | 27,955 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,081 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,766 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 17,860 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,228 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,451 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,646 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,260 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,226 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,069 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,594 |
| Name the English Monarchs | 0 | - | 4.92 | 499,130 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,387 |
| Countries of the Popes | 0 | - | 4.79 | 127,433 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,565 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,499 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 115,495 |
| Hindu Countries | 0 | - | 4.86 | 49,704 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,085 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,206 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,355 |
| Costa Rica Country Quiz | 0 | - | 4.75 | 31,985 |
| Cuba Country Quiz | 0 | - | 4.69 | 51,266 |
| Names of Generations | 0 | - | 4.00 | 22,836 |
| State Quiz - Alaska | 0 | - | 4.42 | 41,853 |
| State Quiz - Arizona | 0 | - | 4.44 | 36,557 |
| California Cities Map Quiz | 0 | - | 4.50 | 87,708 |
| State Quiz - California | 0 | - | 4.68 | 64,096 |
| State Quiz - Florida | 0 | - | 4.47 | 62,047 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,683 |
| Countries that Visit Florida the Most | 0 | - | 4.72 | 71,523 |
| State Quiz - Georgia | 0 | - | 4.48 | 35,394 |
| Countries Closest to Hawaii | 0 | - | 4.54 | 53,332 |
| State Quiz - Illinois | 0 | - | 4.44 | 33,223 |
| State Quiz - Kentucky | 0 | - | 4.41 | 32,304 |
| State Quiz - Minnesota | 0 | - | 4.41 | 38,625 |
| New York Cities Map Quiz | 0 | - | 4.54 | 42,079 |
| State Quiz - New York | 0 | - | 4.52 | 45,851 |
| State Quiz - New Jersey | 0 | - | 4.42 | 37,965 |
| State Quiz - Texas | 0 | - | 4.43 | 62,602 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,080 |
| State Quiz - Pennsylvania | 0 | - | 4.50 | 48,734 |
| State Quiz - Tennessee | 0 | - | 4.54 | 33,975 |
| State Quiz - Virginia | 0 | - | 4.52 | 40,116 |
| State Quiz - Washington | 0 | - | 4.45 | 36,238 |
| U.S. History A-Z #1 | 0 | - | 4.35 | 29,645 |
| 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 | 38,357 |
| U.S. States by Clue #1 | 0 | - | 4.50 | 38,732 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,717 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,523 |
| U.S. States with More Cows than People | 0 | - | 4.63 | 40,470 |
| U.S. States with Spanish Names | 0 | - | 4.50 | 87,456 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 32,434 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 76,602 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 34,953 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 48,787 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,643 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,493 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,489 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,529 |
| 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 | 41,603 |
| 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 | 1,680,469 |
| O Canada Lyrics | 0 | - | 4.47 | 50,831 |
| Canada by Picture | 0 | - | 4.25 | 18,416 |
| Biggest Cities in Canada | 0 | - | 4.54 | 132,028 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,344 |
| The Trojan War | 0 | - | 4.83 | 39,502 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,409 |
| Name that Greek Letter | 0 | - | 4.94 | 322,132 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,895 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,176 |
| Roman Emperors | 0 | - | 4.95 | 118,835 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,522 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,084 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 73,677 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,632 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,617 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,301 |
| U.S. Geography by Letter - P | 0 | - | 4.36 | 47,732 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 52,902 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 40,734 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 38,864 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,643 |
| Panama Country Quiz | 0 | - | 4.61 | 25,650 |
| Dominican Republic Country Quiz | 0 | - | 4.61 | 23,266 |
| Topological Map of the USA Quiz | 0 | - | 4.49 | 28,910 |
| U.S. Vice Presidents | 0 | - | 4.41 | 135,355 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,128 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,733 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,181 |
| Presidential Middle Names | 0 | - | 4.41 | 59,826 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,868 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,987 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,803 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,229 |
