| Prime Ministers of the UK | 0 | - | 4.96 | 434,222 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,153 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,645 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,717 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,366 |
| US States Quiz | 0 | - | 5.00 | 16,683,869 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,190 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,063 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,324 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,641 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,870 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,664 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,649,865 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,170 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,777 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 71,959 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,305 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,481 |
| US States with an Empty Map | 0 | - | 5.00 | 618,302 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,580 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,817 |
| Rivers of the United States | 0 | - | 4.93 | 65,439 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,225 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,383 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,502 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,492 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,796 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,572 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 90,965 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,518 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,370 |
| National Founders | 0 | - | 4.40 | 83,625 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,961 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.49 | 37,100 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,319 |
| Arms Exports - United States | 0 | - | 4.70 | 54,286 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,065 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,454 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,803 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,380 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,420 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,153 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.45 | 49,731 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,248 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,455 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,059 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,608 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,989 |
| American Political Words | 0 | - | 4.39 | 23,329 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,394 |
| American Founding Fathers | 0 | - | 4.41 | 23,065 |
| People on Money - United States | 0 | - | 4.31 | 63,197 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,220 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,704 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,516,755 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,058 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 40,960 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,179 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 36,957 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,220 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 118,538 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,559 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,563 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,209 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,656 |
| American History Quotes #1 | 0 | - | 4.37 | 95,664 |
| American History Quotes #2 | 0 | - | 4.38 | 41,216 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,064 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,812 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,316 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,273 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,010 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,618 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,491 |
| Political Movements by Country | 0 | - | 4.46 | 72,235 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,738 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,801 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,135 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,310 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,509 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,057 |
| Mexico Country Quiz | 0 | - | 4.49 | 71,934 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,306 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,280 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,382 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,468 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 742,844 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,158 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,299 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,628 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,657 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,353 |
| Richest Metro Areas in the U.S. | 0 | - | 4.42 | 43,132 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,491 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,186 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,379,210 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,160 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,663,072 |
| U.S. States Richer than Their Neighbors | 0 | - | 4.43 | 27,198 |
| Most Visited U.S. States by JetPunkers | 0 | - | 4.35 | 44,312 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 37,983 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,722 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 17,805 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,104 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,065 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,128 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,056 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,886 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,917 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,147 |
| Name the English Monarchs | 0 | - | 4.92 | 497,507 |
| Name the Popes Quiz | 0 | - | 4.47 | 136,982 |
| Countries of the Popes | 0 | - | 4.79 | 127,100 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,487 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,090 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,170 |
| Hindu Countries | 0 | - | 4.85 | 49,458 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,904 |
| Countries Bordering Brazil | 0 | - | 4.96 | 130,967 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,260 |
| Costa Rica Country Quiz | 0 | - | 4.75 | 31,886 |
| Cuba Country Quiz | 0 | - | 4.69 | 51,134 |
| State Quiz - Alaska | 0 | - | 4.42 | 41,771 |
| State Quiz - Arizona | 0 | - | 4.44 | 36,471 |
| California Cities Map Quiz | 0 | - | 4.50 | 87,614 |
| State Quiz - California | 0 | - | 4.68 | 63,917 |
| State Quiz - Florida | 0 | - | 4.47 | 61,907 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,605 |
| Countries that Visit Florida the Most | 0 | - | 4.70 | 70,887 |
| State Quiz - Georgia | 0 | - | 4.48 | 35,304 |
| Countries Closest to Hawaii | 0 | - | 4.54 | 53,198 |
| State Quiz - Illinois | 0 | - | 4.44 | 33,131 |
| State Quiz - Kentucky | 0 | - | 4.41 | 32,224 |
| State Quiz - Minnesota | 0 | - | 4.41 | 38,530 |
| New York Cities Map Quiz | 0 | - | 4.54 | 42,025 |
| State Quiz - New York | 0 | - | 4.52 | 45,705 |
| State Quiz - New Jersey | 0 | - | 4.42 | 37,857 |
| State Quiz - Texas | 0 | - | 4.43 | 62,459 |
| Six Flags Over Texas | 0 | - | 4.79 | 62,981 |
| State Quiz - Pennsylvania | 0 | - | 4.50 | 48,584 |
| State Quiz - Tennessee | 0 | - | 4.54 | 33,880 |
| State Quiz - Virginia | 0 | - | 4.52 | 40,013 |
| State Quiz - Washington | 0 | - | 4.45 | 36,146 |
| U.S. History A-Z #1 | 0 | - | 4.39 | 29,232 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,489 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,651 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.74 | 38,309 |
| U.S. States by Clue #1 | 0 | - | 4.52 | 38,548 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,629 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,361 |
| U.S. States with More Cows than People | 0 | - | 4.63 | 40,420 |
| U.S. States with Spanish Names | 0 | - | 4.50 | 87,247 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 32,405 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 76,414 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 34,924 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 48,655 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,550 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,339 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,432 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,393 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,373 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,549 |
| U.S. States with the Fewest Borders | 0 | - | 4.77 | 112,980 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,221 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,676,439 |
| O Canada Lyrics | 0 | - | 4.47 | 50,769 |
| Canada by Picture | 0 | - | 4.25 | 18,108 |
| Biggest Cities in Canada | 0 | - | 4.54 | 131,744 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,265 |
| The Trojan War | 0 | - | 4.83 | 39,400 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,348 |
| Name that Greek Letter | 0 | - | 4.94 | 321,469 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,394 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,989 |
| Roman Emperors | 0 | - | 4.95 | 118,339 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,232 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,900 |
| U.S. Geography by Letter - C | 0 | - | 4.26 | 73,315 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,276 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,279 |
| U.S. Geography by Letter - T | 0 | - | 4.27 | 48,966 |
| U.S. Geography by Letter - P | 0 | - | 4.34 | 47,355 |
| U.S. Geography by Letter - M | 0 | - | 4.13 | 52,574 |
| U.S. Geography by Letter - L | 0 | - | 4.03 | 40,325 |
| U.S. Geography by Letter - G | 0 | - | 4.12 | 38,575 |
| U.S. Geography By Letter - H | 0 | - | 4.38 | 39,296 |
| Panama Country Quiz | 0 | - | 4.61 | 25,586 |
| Dominican Republic Country Quiz | 0 | - | 4.61 | 23,196 |
| Topological Map of the USA Quiz | 0 | - | 4.49 | 28,834 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,771 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,870 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,382 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,928 |
| Presidential Middle Names | 0 | - | 4.41 | 59,647 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,681 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,761 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,712 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,148 |
| Free in the Answers | 0 | - | 4.10 | 51,247 |
| The American Revolution | 0 | - | 4.52 | 54,039 |
