| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,943 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,725 |
| United States Map Quiz | 0 | - | 4.98 | 4,149,761 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,260 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,225 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,547 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,728 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,634 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,139 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,904 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,581 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 65,959 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,270 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,991 |
| Pixelated United States Map | 0 | - | 4.89 | 93,895 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,110 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,348 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,451 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,002 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,012 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,484 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,698 |
| U.S. States By Population | 0 | - | 4.92 | 152,858 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,991 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,220 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,258 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,021 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,027 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,344 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,623 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,418 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,927 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,358 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,021 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,259 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,018,306 |
| U.S. States by Governor | 0 | - | 4.43 | 18,026 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,634 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,617 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,162 |
| Canada Provinces and Territories | 0 | - | 5.00 | 340,288 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 638,280 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,277 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,469 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,247 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,213 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,292 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,078 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,505 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,598 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,533 |
| States of Mexico | 0 | - | 4.95 | 175,003 |
| Mexico States Map Quiz | 0 | - | 4.85 | 104,270 |
| Central American Countries | 0 | - | 4.98 | 155,634 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 147,137 |
| Top U.S. Universities | 0 | - | 4.15 | 144,612 |
| Territories of the United States | 0 | - | 4.79 | 52,279 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,514 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,075 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,021 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,022 |
| New York City Geography | 0 | - | 4.42 | 33,034 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,415 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,530 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,144 |
| United States Country Quiz | 0 | - | 4.43 | 101,140 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,777 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,826 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 82,404 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,121 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,853 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,273 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,678,825 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,178 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,211 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,832 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,388 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,555 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,683 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,568 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,955 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,772 |
| New England States | 0 | - | 4.51 | 59,764 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,680 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,959 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,600 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 55,863 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,816 |
| U.S. States by Borders | 0 | - | 4.61 | 35,221 |
| Save Americans by Guessing U.S. States | 0 | - | 4.63 | 184,379 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,381 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,867 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,105 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,498 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.72 | 32,921 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,531 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,056 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,302 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,582 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,642 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,634 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,304 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,254 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,825 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 46,557 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,173 |
| NATO Countries | 0 | - | 4.98 | 278,481 |
| EU Countries Quiz | 0 | - | 4.99 | 272,043 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,392 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,122 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.67 | 45,053 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,306 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,183 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,837 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,095 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.42 | 59,263 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.73 | 63,733 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,443 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,714 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,742 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,612 |
| Flags of North and South America | 0 | - | 4.99 | 370,775 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,009 |
| South America Map Quiz | 0 | - | 5.00 | 1,545,535 |
| Belize Country Quiz | 0 | - | 4.85 | 20,898 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,141 |
| Largest United States Airlines | 0 | - | 4.39 | 54,944 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,583 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,852 |
| Politicians with Other Careers | 0 | - | 3.98 | 15,007 |
| Main Parts of the U.S. Budget | 0 | - | 3.45 | 8,701 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,804 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 55,858 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,059 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,436 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,872 |
| The Only American Country ... | 0 | - | 4.92 | 121,240 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,792 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,763 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,483 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,087 |
| Which Island in the United States? | 0 | - | 4.29 | 29,356 |
| American Foods | 0 | - | 3.66 | 39,336 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,193 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,460 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,033 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,703 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,261 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,850 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,298 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,566 |
| Old West History | 0 | - | 4.33 | 15,247 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,511 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,897 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,695 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,735 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,499 |
| Flyover States | 0 | - | 4.52 | 29,459 |
| U.S. States With Double Letters | 0 | - | 4.54 | 24,030 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 76,010 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,188 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.44 | 29,645 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,488 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,289 |
| US States with the Most Executions | 0 | - | 4.51 | 26,377 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,000 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,841 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,086 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,658 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,672 |
| Monarchies of Europe | 0 | - | 4.90 | 97,769 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,742 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,451 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,200 |
| Monarchies of Asia | 0 | - | 4.97 | 70,876 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,690 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,586 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,909 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,993 |
| US States Quiz | 0 | - | 5.00 | 16,796,033 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,529 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,817 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,253 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,618 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,432 |
| Canada Country Quiz | 0 | - | 4.54 | 132,159 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,944 |
| Canada A-Z | 0 | - | 4.73 | 32,738 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,875 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,186 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,009 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,491 |
| History of Mexico | 0 | - | 4.58 | 15,272 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,622 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,448 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,726 |
| States of Brazil | 0 | - | 4.97 | 87,282 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,176 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 745,526 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,399 |
