| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,215 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,813 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,545 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,338 |
| United States Map Quiz | 0 | - | 4.98 | 4,154,526 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,269 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,063 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,948 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,312 |
| 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 | 63,906 |
| 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 | 73,772 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,832 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,656 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,988 |
| States of Mexico | 0 | - | 4.95 | 175,604 |
| Mexico States Map Quiz | 0 | - | 4.85 | 104,537 |
| Central American Countries | 0 | - | 4.98 | 155,923 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 147,982 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,821 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,359 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,223 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,097 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,338 |
| 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 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,107 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,530 |
| Canada Country Quiz | 0 | - | 4.54 | 132,348 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 124,086 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,577 |
| Pixelated United States Map | 0 | - | 4.87 | 94,105 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,381 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,551 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,329 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,665 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,199 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,234 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,735 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,002 |
| 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 | 44,339 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,401 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,159 |
| 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 | 159,806 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,592 |
| 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 | 69,432 |
| 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 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,799 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,591 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,613 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,350 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,301 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,408 |
| NATO Countries | 0 | - | 4.98 | 279,410 |
| EU Countries Quiz | 0 | - | 4.99 | 273,028 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,030 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,026 |
| Flags of North and South America | 0 | - | 4.99 | 372,121 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,411 |
| South America Map Quiz | 0 | - | 5.00 | 1,547,666 |
| Belize Country Quiz | 0 | - | 4.85 | 20,941 |
| Top U.S. Universities | 0 | - | 4.15 | 144,880 |
| Territories of the United States | 0 | - | 4.79 | 52,340 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,590 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,292 |
| New York City Geography | 0 | - | 4.42 | 33,062 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,928 |
| The Only American Country ... | 0 | - | 4.92 | 121,427 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,964 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,196 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,128 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,891 |
| 20 Most-Visited Places in Canada | 0 | - | 4.27 | 13,177 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,945 |
| Monarchies of Europe | 0 | - | 4.90 | 97,986 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,035 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,749 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,421 |
| Monarchies of Asia | 0 | - | 4.97 | 70,998 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,789 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,718 |
| 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 |
| United States Country Quiz | 0 | - | 4.43 | 101,354 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,832 |
| Canada A-Z | 0 | - | 4.73 | 32,784 |
| Ontario Cities Map Quiz | 0 | - | 4.64 | 19,444 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,903 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,136 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,360 |
| History of Mexico | 0 | - | 4.58 | 15,292 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,793 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,696 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,901 |
| States of Brazil | 0 | - | 4.97 | 87,708 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,431 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 138,244 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,696 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 93,547 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,906 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,582 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,058 |
| Politicians with Other Careers | 0 | - | 3.98 | 15,012 |
| Main Parts of the U.S. Budget | 0 | - | 3.45 | 8,707 |
| 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 | 82,716 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 55,929 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,879 |
| U.S. States by Borders | 0 | - | 4.61 | 35,265 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,438 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,970 |
| 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 | 73,627 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,779 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,751 |
| 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 | 46,837 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,923 |
| Canadian Islands on the Map | 0 | - | 4.40 | 20,003 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,967 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,825 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,717 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,755 |
| Name the English Monarchs | 0 | - | 4.91 | 501,716 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,878 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,765 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,601 |
| Canada or Africa by Area | 0 | - | 4.77 | 18,288 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,340 |
| El Salvador Country Quiz | 0 | - | 4.63 | 31,665 |
| Jamaica Country Quiz | 0 | - | 4.58 | 35,036 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,558 |
| Largest United States Airlines | 0 | - | 4.39 | 54,998 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,826 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,565 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,092 |
| 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 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,469 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,736 |
| NHL Hockey Teams in Canada | 0 | - | 4.35 | 34,863 |
| Bahamas Country Quiz | 0 | - | 4.63 | 19,197 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,940 |
| Prime Ministers of the UK | 0 | - | 4.95 | 438,038 |
| All OPEC Countries Ever | 0 | - | 4.77 | 90,876 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,413 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,688 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,937 |
| 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. Cities by Picture #1 | 0 | - | 4.36 | 34,510 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,089 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,732 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,301 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,873 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 55,917 |
| 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 |
| 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 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,506 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,440 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,831 |
| 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 |
