| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,715 |
| United States Map Quiz | 0 | - | 4.98 | 4,169,555 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,828 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,874 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,904 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,215 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,412 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,274 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,421 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 246,108 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,067 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,664 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,460 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,485 |
| Pixelated United States Map | 0 | - | 4.88 | 94,740 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,420 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,355 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,949 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,170 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,187 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,231 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,233 |
| U.S. States By Population | 0 | - | 4.92 | 154,071 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,126 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,829 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,006 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,797 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,502 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,029 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,603 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,145 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,620 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,794 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,609 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,946 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,030,136 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,686 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,098 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,503 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,375 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,971 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,008 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 904,621 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,725 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,877 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,611 |
| States of Mexico | 0 | - | 4.96 | 177,958 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,523 |
| Central American Countries | 0 | - | 4.98 | 157,212 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,488 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 150,097 |
| Territories of the United States | 0 | - | 4.80 | 52,595 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,849 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 176,026 |
| New York City Geography | 0 | - | 4.43 | 33,176 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,707 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,661 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,266 |
| United States Country Quiz | 0 | - | 4.43 | 102,111 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,039 |
| Canada A-Z | 0 | - | 4.73 | 32,951 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,176 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,146 |
| American Legal Vocabulary | 0 | - | 4.40 | 34,004 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,582 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,006 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,765 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,370 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,384 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,088 |
| New England States | 0 | - | 4.51 | 59,887 |
| U.S. States by Land Area | 0 | - | 4.55 | 53,025 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,106 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,092 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,256 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,117 |
| U.S. States by Borders | 0 | - | 4.62 | 35,455 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 188,433 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,667 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,305 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,425 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,897 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,206 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,815 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,432 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,496 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,839 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,308 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,227 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,558 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,991 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,234 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 47,066 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,922 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,652 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,606 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,318 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,247 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,970 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,254 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.44 | 70,350 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.74 | 64,188 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,564 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,832 |
| Flags of North and South America | 0 | - | 4.99 | 376,374 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,526 |
| South America Map Quiz | 0 | - | 5.00 | 1,555,429 |
| Belize Country Quiz | 0 | - | 4.85 | 21,073 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,294 |
| Top U.S. Universities | 0 | - | 4.15 | 145,722 |
| Largest United States Airlines | 0 | - | 4.39 | 55,138 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,948 |
| U.S. States by Governor | 0 | - | 4.43 | 18,110 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,756 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,763 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,901 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 56,214 |
| Events in U.S. History | 0 | - | 4.41 | 28,799 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,184 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,841 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 87,951 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,996 |
| The Only American Country ... | 0 | - | 4.92 | 122,140 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,588 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,922 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,842 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,183 |
| Which Island in the United States? | 0 | - | 4.29 | 29,745 |
| American Foods | 0 | - | 3.66 | 39,430 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,325 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,708 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,278 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.27 | 14,809 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,426 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,973 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,458 |
| Old West History | 0 | - | 4.34 | 15,294 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,532 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,980 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,772 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 75,037 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,560 |
| Flyover States | 0 | - | 4.53 | 29,584 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,241 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,371 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,932 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,781 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,698 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,516 |
| US States with the Most Executions | 0 | - | 4.51 | 26,422 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,148 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,236 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,236 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,623 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,412 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,855 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,915 |
| US States Quiz | 0 | - | 5.00 | 16,978,384 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,626 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,925 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,356 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,727 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,661 |
| Canada Country Quiz | 0 | - | 4.55 | 132,970 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,556 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,755 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,755 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,863 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 53,287 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,960 |
| History of Mexico | 0 | - | 4.52 | 15,358 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,403 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,684 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,510 |
| States of Brazil | 0 | - | 4.97 | 89,467 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,229 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 749,338 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,504 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,986 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,781 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 82,501 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,077 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,081 |
| California Multiple Choice | 0 | - | 4.40 | 28,168 |
| Geography of California | 0 | - | 4.26 | 10,616 |
| California Pro Sport Teams | 0 | - | 4.19 | 22,711 |
| San Francisco Trivia | 0 | - | 4.32 | 15,724 |
| San Francisco A-Z | 0 | - | 4.18 | 9,586 |
| Florida Multiple Choice | 0 | - | 4.33 | 10,200 |
| Chicago City Trivia | 0 | - | 4.31 | 31,513 |
| Boston City Trivia | 0 | - | 4.38 | 24,195 |
| New York Pro Sport Teams | 0 | - | 4.32 | 25,954 |
| Texas Pro Sport Teams | 0 | - | 4.19 | 16,852 |
| History of Pennsylvania | 0 | - | 4.16 | 7,162 |
| History of Virginia | 0 | - | 4.33 | 11,640 |
| Washington State by Picture | 0 | - | 4.26 | 7,753 |
| African-American Historical Figures | 0 | - | 4.18 | 17,272 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,589 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,421 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,582 |
