| U.S. Cabinet Departments | 0 | - | 4.86 | 72,932 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,046 |
| US States Quiz | 0 | - | 5.00 | 16,913,021 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,096 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,844 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,806 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,752 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,378 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,772 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,263 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,898 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,987 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 333,014 |
| Pixelated United States Map | 0 | - | 4.88 | 94,438 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,914 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,970 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,116 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,682 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,647 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,301 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,610 |
| U.S. States By Population | 0 | - | 4.92 | 153,724 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,681 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,582 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,481 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,325 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,779 |
| Top U.S. Universities | 0 | - | 4.15 | 145,356 |
| US States with an Empty Map | 0 | - | 5.00 | 625,873 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,905 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,227 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,660 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,789 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,825 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,923 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,597 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,346 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,470 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,115 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,418 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,314 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,510 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,938 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,720 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 747,962 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,030 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,357 |
| States of Mexico | 0 | - | 4.96 | 176,691 |
| Mexico States Map Quiz | 0 | - | 4.84 | 104,978 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 51,990 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,718 |
| U.S. States by Governor | 0 | - | 4.43 | 18,078 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,714 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,705 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,511 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,573 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,668 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,843 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,343 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,850 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,738 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,380 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,160 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,186 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,160 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,858 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 53,999 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,375 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,223 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,387 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,246 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,647 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,586 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,609 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,211 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,954 |
| United States Country Quiz | 0 | - | 4.43 | 101,693 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,939 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,395 |
| People on Money - United States | 0 | - | 4.31 | 63,371 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,442 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,559 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,049 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,269 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,969 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 209,792 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 59,953 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,389 |
| New England States | 0 | - | 4.51 | 59,830 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,880 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,033 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 82,903 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,104 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,999 |
| U.S. States by Borders | 0 | - | 4.61 | 35,370 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,380 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,132 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,537 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,138 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,267 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 119,164 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,627 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,827 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,169 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,056 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,051 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 52,983 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,883 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,529 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,236 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,840 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,911 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,906 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,269 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,835 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,524 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,792 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 113,971 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,323 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 18,030 |
| Flags of North and South America | 0 | - | 4.99 | 374,170 |
| U.S. Geography by Letter - N | 0 | - | 3.80 | 52,796 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 48,828 |
| U.S. Geography by Letter - F | 0 | - | 3.84 | 45,093 |
| U.S. Geography by Letter - O | 0 | - | 3.52 | 41,552 |
| U.S. Geography by Letter - R | 0 | - | 4.18 | 31,460 |
| Belize Country Quiz | 0 | - | 4.85 | 21,010 |
| Largest United States Airlines | 0 | - | 4.39 | 55,071 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,804 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,339 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,327 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,179 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,540 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.22 | 10,874 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,863 |
| Events in U.S. History | 0 | - | 4.41 | 28,706 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,856 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,611 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,180 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,281 |
| American Founding Fathers | 0 | - | 4.42 | 23,237 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,525 |
| California Groups of Things | 0 | - | 4.25 | 45,525 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,292 |
| New York Groups of Things | 0 | - | 4.35 | 63,913 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,503 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,913 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,537 |
| Flyover States | 0 | - | 4.52 | 29,536 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,163 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,252 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,513 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,140 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,094 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,475 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,563 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,406 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,335 |
| The Only American Country ... | 0 | - | 4.92 | 121,795 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,261 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,597 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,593 |
| Names of Generations | 0 | - | 4.09 | 45,165 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,374 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,061 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,024 |
| Regions of U.S. States | 0 | - | 4.37 | 43,971 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,399 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,597 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,872 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,319 |
| Movies by State | 0 | - | 4.27 | 40,561 |
| U.S. States with the Fewest Traffic Fatalities | 0 | - | 4.20 | 21,162 |
| U.S. States with the Most Traffic Fatalities | 0 | - | 4.10 | 19,161 |
| Canada Country Quiz | 0 | - | 4.54 | 132,648 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,336 |
| Canada A-Z | 0 | - | 4.73 | 32,887 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,363 |
| Monarchies of Europe | 0 | - | 4.90 | 98,326 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 85,375 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,262 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,673 |
| Monarchies of Asia | 0 | - | 4.97 | 71,205 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,004 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,790 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,572 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,517 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,152 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,228 |
| States of Brazil | 0 | - | 4.97 | 88,547 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,208 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,465 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 138,773 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,176 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,994 |
| Richest Metro Areas in the U.S. | 0 | - | 4.42 | 43,853 |
| Politicians with Other Careers | 0 | - | 3.98 | 15,029 |
| Main Parts of the U.S. Budget | 0 | - | 3.45 | 8,725 |
| Geography of California | 0 | - | 4.26 | 10,587 |
| California Pro Sport Teams | 0 | - | 4.19 | 22,697 |
