| U.S. Cabinet Departments | 0 | - | 4.86 | 73,180 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,063 |
| US States Quiz | 0 | - | 5.00 | 17,029,006 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,947 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 126,087 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,734 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,297 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,616 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,599 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,893 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 247,154 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,845 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 336,433 |
| Pixelated United States Map | 0 | - | 4.89 | 95,002 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,789 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,639 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,230 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,472 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,488 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,564 |
| U.S. States that Start with M | 0 | - | 4.94 | 188,618 |
| U.S. States By Population | 0 | - | 4.92 | 154,280 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,413 |
| U.S. States with Longest Names | 0 | - | 4.85 | 45,007 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 89,001 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,617 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,235 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,230 |
| US States with an Empty Map | 0 | - | 5.00 | 629,761 |
| 10 Longest Rivers in the United States | 0 | - | 4.86 | 39,472 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,441 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,970 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,481 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,602 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,130 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,448 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,662 |
| U.S. Geography by Letter - B | 0 | - | 4.54 | 70,171 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 58,621 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 750,474 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,756 |
| California Groups of Things | 0 | - | 4.26 | 45,813 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,176 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,570 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,936 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 93,019 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 241,015 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,983 |
| States of Mexico | 0 | - | 4.96 | 178,862 |
| Mexico States Map Quiz | 0 | - | 4.85 | 105,817 |
| Top U.S. Universities | 0 | - | 4.15 | 146,035 |
| U.S. States by Governor | 0 | - | 4.43 | 18,125 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,790 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,810 |
| Geography of California | 0 | - | 4.27 | 10,811 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.92 | 95,756 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,704 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,764 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,723 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 50,476 |
| U.S. Geography by Letter - P | 0 | - | 4.40 | 54,631 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,794 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,745 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,886 |
| U.S. Geography by Letter - R | 0 | - | 4.22 | 37,093 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,829 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,886 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,815 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,702 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,297 |
| American Legal Vocabulary | 0 | - | 4.40 | 34,052 |
| United States Country Quiz | 0 | - | 4.43 | 102,379 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,112 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,507 |
| Los Angeles vs. New York | 0 | - | 4.41 | 20,077 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,331 |
| New York Groups of Things | 0 | - | 4.39 | 72,410 |
| People on Money - United States | 0 | - | 4.31 | 63,506 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.11 | 53,393 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.54 | 65,070 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.74 | 64,110 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,852 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,672 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,701 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,270 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 107,251 |
| Musical Acts from Los Angeles by Two Songs | 0 | - | 4.27 | 16,370 |
| Movies Set in San Francisco | 0 | - | 4.23 | 19,965 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,085 |
| United States Map Quiz | 0 | - | 4.98 | 4,174,073 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,795 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,207 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,092 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,102 |
| Countries Closest to Alaska | 0 | - | 4.93 | 125,351 |
| California Pro Sport Teams | 0 | - | 4.19 | 22,720 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,723 |
| New York Pro Sport Teams | 0 | - | 4.32 | 25,982 |
| New England States | 0 | - | 4.51 | 59,915 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 53,201 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.64 | 66,187 |
| U.S. States by Land Area | 0 | - | 4.55 | 53,122 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,141 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,696 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.70 | 61,573 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,249 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,347 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,197 |
| U.S. States by Borders | 0 | - | 4.61 | 35,518 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.75 | 35,140 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,729 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,412 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,991 |
| Longest U.S. State Borders | 0 | - | 4.69 | 40,209 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,488 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,999 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,587 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,855 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 114,584 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,388 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 18,165 |
| Asian Last Names in the United States | 0 | - | 4.43 | 47,027 |
| Flags of North and South America | 0 | - | 4.99 | 378,369 |
| U.S. Geography by Letter - N | 0 | - | 3.80 | 53,210 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 49,249 |
| U.S. Geography by Letter - F | 0 | - | 3.85 | 45,530 |
| U.S. Geography by Letter - O | 0 | - | 3.52 | 41,993 |
| Belize Country Quiz | 0 | - | 4.85 | 21,124 |
| Largest United States Airlines | 0 | - | 4.39 | 55,191 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,364 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 53,134 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,858 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,925 |
| Famous People from Alabama by Picture | 0 | - | 4.07 | 24,149 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,920 |
| Hawaiian Islands | 0 | - | 4.83 | 43,036 |
| Famous People from Michigan by Picture | 0 | - | 4.30 | 21,525 |
| Famous People from New York by Picture | 0 | - | 4.03 | 27,642 |
| Famous People from Texas by Picture | 0 | - | 4.00 | 33,484 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,585 |
| Events in U.S. History | 0 | - | 4.41 | 28,867 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,940 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,576 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,502 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,357 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,723 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,791 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,495 |
| Georgia ... or Georgia? | 0 | - | 4.68 | 77,111 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,043 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,770 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,340 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,613 |
| American Founding Fathers | 0 | - | 4.42 | 23,306 |
| California Cities A-Z | 0 | - | 4.07 | 17,493 |
| Movies Set in Miami | 0 | - | 4.32 | 16,723 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,640 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 75,127 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,581 |
| Flyover States | 0 | - | 4.53 | 29,620 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,313 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,466 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,483 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,211 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 129,058 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.46 | 119,393 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,717 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,545 |
| The Only American Country ... | 0 | - | 4.92 | 122,382 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,804 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.93 | 55,083 |
| Brazil States Map Quiz | 0 | - | 4.87 | 48,757 |
| States of Brazil | 0 | - | 4.98 | 90,108 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,978 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,240 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 76,098 |
| Names of Generations | 0 | - | 4.09 | 45,617 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,527 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 95,353 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 83,511 |
| Politicians with Other Careers | 0 | - | 3.98 | 15,068 |
| Main Parts of the U.S. Budget | 0 | - | 3.45 | 8,754 |
| Cities of Los Angeles County on a Map | 0 | - | 4.69 | 27,497 |
| Chicago City Trivia | 0 | - | 4.31 | 31,538 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 75,289 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,348 |
| Texas Pro Sport Teams | 0 | - | 4.19 | 16,866 |
| History of Pennsylvania | 0 | - | 4.16 | 7,174 |
| History of Virginia | 0 | - | 4.33 | 11,650 |
| Washington State by Picture | 0 | - | 4.26 | 7,767 |
| Regions of U.S. States | 0 | - | 4.37 | 44,274 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,433 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,644 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,947 |
| Events by U.S. State #1 | 0 | - | 4.43 | 22,984 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,389 |
| Movies by State | 0 | - | 4.27 | 40,621 |
| Most Valuable Crops by U.S. State | 0 | - | 4.40 | 39,251 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,419 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,896 |
