| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,264 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,863 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,505 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,921 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,824 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,022 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,466 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,683 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,606 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,098 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,592 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,586 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,176 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,712 |
| Pixelated United States Map | 0 | - | 4.89 | 93,428 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,394 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,804 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,670 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,305 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,353 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,580 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,852 |
| U.S. States By Population | 0 | - | 4.92 | 152,313 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,342 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,826 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,868 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,501 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,737 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,843 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,831 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,053 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,448 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,050 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,642 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,800 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,142 |
| Top U.S. Universities | 0 | - | 4.15 | 144,015 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,640 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,731 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,488 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,038 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,909 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,803 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,671 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,914 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,876 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,042 |
| States of Mexico | 0 | - | 4.95 | 173,229 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,740 |
| Central American Countries | 0 | - | 4.98 | 154,979 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 145,779 |
| Territories of the United States | 0 | - | 4.79 | 52,121 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,363 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,493 |
| U.S. States by Governor | 0 | - | 4.43 | 17,978 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,568 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,544 |
| New York City Geography | 0 | - | 4.42 | 32,904 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,251 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,465 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,072 |
| United States Country Quiz | 0 | - | 4.43 | 100,535 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,588 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,635 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,067 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,109 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,784 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,150 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,194 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,302 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,084 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,838 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,628 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 207,778 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,686 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,576 |
| New England States | 0 | - | 4.51 | 59,704 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,462 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,880 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,295 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 55,614 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,651 |
| U.S. States by Borders | 0 | - | 4.63 | 35,057 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 182,411 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,221 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,113 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 43,976 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,289 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.70 | 32,768 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,407 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 74,859 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,197 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,398 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 89,937 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,297 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,139 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 81,835 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,547 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,821 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,683 |
| Senators Who Ran For President | 0 | - | 4.24 | 16,989 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 21,967 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,269 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,018 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.67 | 44,953 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,825 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,607 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,760 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,013 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.42 | 59,001 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,385 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,661 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,526 |
| Georgia ... or Georgia? | 0 | - | 4.69 | 76,399 |
| Flags of North and South America | 0 | - | 4.99 | 366,586 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,097 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,814 |
| Belize Country Quiz | 0 | - | 4.85 | 20,791 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,041 |
| Largest United States Airlines | 0 | - | 4.39 | 54,826 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,365 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,374 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,750 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 55,675 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,985 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,206 |
| The Only American Country ... | 0 | - | 4.92 | 120,713 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,303 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,662 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,742 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,032 |
| Which Island in the United States? | 0 | - | 4.29 | 29,142 |
| American Foods | 0 | - | 3.66 | 39,272 |
| U.S. Cities by Picture #1 | 0 | - | 4.37 | 34,342 |
| Cities by Picture #2 | 0 | - | 4.19 | 34,928 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,664 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,178 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,797 |
| Old West History | 0 | - | 4.33 | 15,220 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,488 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,844 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,641 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,588 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,458 |
| Flyover States | 0 | - | 4.52 | 29,384 |
| U.S. States With Double Letters | 0 | - | 4.54 | 23,903 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 75,784 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 127,977 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.44 | 29,575 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,350 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,148 |
| US States with the Most Executions | 0 | - | 4.51 | 26,347 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 28,911 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,593 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.40 | 40,058 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,019 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,296 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,175 |
| Monarchies of Europe | 0 | - | 4.90 | 97,268 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,175 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,717 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,970 |
| Monarchies of Asia | 0 | - | 4.97 | 70,572 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,415 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,298 |
| US States Quiz | 0 | - | 5.00 | 16,691,139 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,489 |
| U.S. States with the Lowest HDI | 0 | - | 4.46 | 28,760 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,194 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,569 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,300 |
| Canada Country Quiz | 0 | - | 4.54 | 131,674 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,582 |
| Canada A-Z | 0 | - | 4.73 | 32,639 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,043 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,871 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,521 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,070 |
| History of Mexico | 0 | - | 4.58 | 15,227 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,106 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,895 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,361 |
| States of Brazil | 0 | - | 4.98 | 86,305 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,156 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 742,999 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,355 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 137,637 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,754 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,242 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,674 |
| Politicians with Other Careers | 0 | - | 3.98 | 14,982 |
| Main Parts of the U.S. Budget | 0 | - | 3.45 | 8,676 |
| California Multiple Choice | 0 | - | 4.40 | 28,036 |
| Geography of California | 0 | - | 4.25 | 10,497 |
| California Pro Sport Teams | 0 | - | 4.19 | 22,648 |
| San Francisco Trivia | 0 | - | 4.32 | 15,658 |
| San Francisco A-Z | 0 | - | 4.18 | 9,519 |
| Florida Multiple Choice | 0 | - | 4.33 | 10,165 |
| Chicago City Trivia | 0 | - | 4.31 | 31,377 |
| Boston City Trivia | 0 | - | 4.38 | 24,129 |
