| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,286 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,507 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,736 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,783 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,203 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,325 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,284 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,709 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,920 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,909 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,932 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,842 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,039 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,470 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,209 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,057 |
| States of Mexico | 0 | - | 4.95 | 173,279 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,758 |
| Central American Countries | 0 | - | 4.98 | 155,000 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 145,806 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,801 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,622 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,116 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,718 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,795 |
| U.S. States by Governor | 0 | - | 4.43 | 17,979 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,570 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,545 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,605 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,212 |
| Canada Country Quiz | 0 | - | 4.54 | 131,687 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,589 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,077 |
| Pixelated United States Map | 0 | - | 4.89 | 93,443 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,423 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,817 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,154 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,687 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,324 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,372 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,614 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,870 |
| U.S. States By Population | 0 | - | 4.92 | 152,328 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,361 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,837 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,879 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,522 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,747 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,860 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,848 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,065 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,458 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,057 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,647 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,809 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,877 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,514 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,069 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,921 |
| Most-Visited Countries by Canadians | 0 | - | 4.77 | 39,115 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,190 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,816 |
| NATO Countries | 0 | - | 4.98 | 275,542 |
| EU Countries Quiz | 0 | - | 4.99 | 269,770 |
| Senators Who Ran For President | 0 | - | 4.24 | 16,990 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 21,967 |
| Flags of North and South America | 0 | - | 4.99 | 366,819 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,115 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,927 |
| Belize Country Quiz | 0 | - | 4.85 | 20,796 |
| Top U.S. Universities | 0 | - | 4.15 | 144,029 |
| Territories of the United States | 0 | - | 4.79 | 52,129 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,365 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,514 |
| New York City Geography | 0 | - | 4.42 | 32,918 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,736 |
| The Only American Country ... | 0 | - | 4.92 | 120,724 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,313 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,766 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,109 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,787 |
| 20 Most-Visited Places in Canada | 0 | - | 4.27 | 13,125 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,307 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,187 |
| Monarchies of Europe | 0 | - | 4.90 | 97,284 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,194 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,742 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,980 |
| Monarchies of Asia | 0 | - | 4.97 | 70,583 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,421 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,308 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,255 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,468 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,074 |
| United States Country Quiz | 0 | - | 4.43 | 100,544 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,592 |
| Canada A-Z | 0 | - | 4.73 | 32,641 |
| Ontario Cities Map Quiz | 0 | - | 4.64 | 19,342 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,641 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,066 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,877 |
| History of Mexico | 0 | - | 4.58 | 15,227 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,125 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,908 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,366 |
| States of Brazil | 0 | - | 4.98 | 86,331 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,088 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 137,652 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,630 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,299 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 207,801 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,713 |
| Politicians with Other Careers | 0 | - | 3.98 | 14,983 |
| Main Parts of the U.S. Budget | 0 | - | 3.45 | 8,676 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,580 |
| New England States | 0 | - | 4.51 | 59,704 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,469 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,881 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,301 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 55,621 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,655 |
| U.S. States by Borders | 0 | - | 4.63 | 35,062 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,228 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,124 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 43,982 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,298 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.70 | 32,771 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,409 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 74,866 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,202 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,403 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 89,953 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,309 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,143 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 81,845 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,557 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,377 |
| Canadian Islands on the Map | 0 | - | 4.39 | 19,914 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,214 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,089 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,429 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,099 |
| Name the English Monarchs | 0 | - | 4.92 | 497,750 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,481 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,679 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,523 |
| Canada or Africa by Area | 0 | - | 4.77 | 18,057 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,066 |
| Jamaica Country Quiz | 0 | - | 4.58 | 34,856 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,335 |
| Largest United States Airlines | 0 | - | 4.39 | 54,832 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,751 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,215 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,986 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,270 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,023 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.67 | 44,956 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,762 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,014 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,386 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,663 |
| NHL Hockey Teams in Canada | 0 | - | 4.35 | 34,537 |
| Bahamas Country Quiz | 0 | - | 4.63 | 19,076 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,240 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,472 |
| OPEC Countries | 0 | - | 4.74 | 84,809 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,114 |
| Georgia ... or Georgia? | 0 | - | 4.69 | 76,402 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,468 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,032 |
| Which Island in the United States? | 0 | - | 4.29 | 29,146 |
| American Foods | 0 | - | 3.66 | 39,273 |
| U.S. Cities by Picture #1 | 0 | - | 4.37 | 34,350 |
| Cities by Picture #2 | 0 | - | 4.19 | 34,930 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,665 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,180 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,798 |
| Old West History | 0 | - | 4.33 | 15,221 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,489 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,848 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,643 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,596 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,461 |
| Flyover States | 0 | - | 4.52 | 29,387 |
| U.S. States With Double Letters | 0 | - | 4.54 | 23,905 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 75,794 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 127,981 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,838 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,628 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,592 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.44 | 29,577 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,356 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,150 |
| US States with the Most Executions | 0 | - | 4.51 | 26,347 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 28,916 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,599 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,361 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 172,302 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.40 | 40,060 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,534 |
