| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,215 |
| United States Map Quiz | 0 | - | 4.98 | 4,154,540 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,376 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,355 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,773 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,832 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,821 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,360 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,225 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,341 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,816 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,107 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,656 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,432 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,097 |
| Pixelated United States Map | 0 | - | 4.87 | 94,105 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,384 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,551 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,667 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,200 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,235 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,736 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,003 |
| U.S. States By Population | 0 | - | 4.92 | 153,026 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,227 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,340 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,401 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,160 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,121 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,488 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,808 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,593 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,068 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,433 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,128 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,402 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,951 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,594 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,614 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,350 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,552 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,340 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,408 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,602 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,741 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,907 |
| Territories of the United States | 0 | - | 4.79 | 52,341 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,591 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,293 |
| New York City Geography | 0 | - | 4.42 | 33,064 |
| States of Mexico | 0 | - | 4.95 | 175,608 |
| Mexico States Map Quiz | 0 | - | 4.85 | 104,541 |
| Central American Countries | 0 | - | 4.98 | 155,924 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 147,984 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,467 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,561 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,160 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,891 |
| United States Country Quiz | 0 | - | 4.43 | 101,356 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,832 |
| Canada A-Z | 0 | - | 4.73 | 32,785 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,270 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,063 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,903 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,128 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,909 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,060 |
| Branches of the U.S. Military | 0 | - | 4.39 | 24,337 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,835 |
| New England States | 0 | - | 4.51 | 59,785 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,751 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,987 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,718 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 55,931 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,879 |
| U.S. States by Borders | 0 | - | 4.61 | 35,266 |
| Save Americans by Guessing U.S. States | 0 | - | 4.63 | 185,187 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,438 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,971 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,185 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,592 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.72 | 32,988 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,609 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,129 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,345 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,628 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,779 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,752 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,363 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,422 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,906 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 46,840 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,313 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,696 |
| 75 Americans Named John | 0 | - | 4.41 | 23,892 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,262 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,440 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,156 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,096 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,859 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,142 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.42 | 59,374 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.74 | 63,799 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,469 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,737 |
| Flags of North and South America | 0 | - | 4.99 | 372,132 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,419 |
| South America Map Quiz | 0 | - | 5.00 | 1,547,674 |
| Belize Country Quiz | 0 | - | 4.85 | 20,941 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,184 |
| Top U.S. Universities | 0 | - | 4.15 | 144,881 |
| Largest United States Airlines | 0 | - | 4.39 | 54,998 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,667 |
| U.S. States by Governor | 0 | - | 4.43 | 18,046 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,676 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,654 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,826 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,092 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,275 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,689 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,806 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,510 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,089 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,331 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 55,918 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,708 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,801 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,508 |
| Flyover States | 0 | - | 4.52 | 29,482 |
| U.S. States With Double Letters | 0 | - | 4.54 | 24,082 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 76,085 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,292 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,668 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,529 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,350 |
| US States with the Most Executions | 0 | - | 4.51 | 26,386 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,040 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,486 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,933 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,125 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,530 |
| The Only American Country ... | 0 | - | 4.92 | 121,429 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,965 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,718 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,197 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,103 |
| Which Island in the United States? | 0 | - | 4.29 | 29,440 |
| American Foods | 0 | - | 3.66 | 39,363 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,227 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,732 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,302 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,874 |
| Old West History | 0 | - | 4.33 | 15,259 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,517 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,917 |
| US States Quiz | 0 | - | 5.00 | 16,838,563 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,555 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,837 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,272 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,644 |
| Canada Country Quiz | 0 | - | 4.54 | 132,350 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 124,086 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,035 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,750 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,421 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,989 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,360 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,331 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,807 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,939 |
| History of Mexico | 0 | - | 4.58 | 15,292 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,794 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,697 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,906 |
| States of Brazil | 0 | - | 4.97 | 87,708 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,191 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 746,354 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,420 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,201 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 93,548 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,582 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,030 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,026 |
| California Multiple Choice | 0 | - | 4.40 | 28,089 |
| Geography of California | 0 | - | 4.26 | 10,551 |
| California Pro Sport Teams | 0 | - | 4.19 | 22,678 |
| San Francisco Trivia | 0 | - | 4.32 | 15,693 |
| San Francisco A-Z | 0 | - | 4.18 | 9,562 |
| Florida Multiple Choice | 0 | - | 4.33 | 10,181 |
| Chicago City Trivia | 0 | - | 4.31 | 31,436 |
| Boston City Trivia | 0 | - | 4.38 | 24,162 |
| New York Pro Sport Teams | 0 | - | 4.32 | 25,886 |
| Texas Pro Sport Teams | 0 | - | 4.19 | 16,809 |
| History of Pennsylvania | 0 | - | 4.16 | 7,130 |
| History of Virginia | 0 | - | 4.31 | 11,590 |
| Washington State by Picture | 0 | - | 4.26 | 7,721 |
| Events in U.S. History | 0 | - | 4.40 | 28,630 |
| African-American Historical Figures | 0 | - | 4.18 | 17,189 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,924 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,301 |
