| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,290 |
| United States Map Quiz | 0 | - | 4.98 | 4,155,440 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,835 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,410 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,385 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,852 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,865 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,059 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,857 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,426 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,315 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,543 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,153 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,784 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,715 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,135 |
| Pixelated United States Map | 0 | - | 4.87 | 94,148 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,477 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,616 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,733 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,267 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,288 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,821 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,079 |
| U.S. States By Population | 0 | - | 4.92 | 153,448 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,299 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,371 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,438 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,205 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,145 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,529 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,854 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,636 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,113 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,451 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,156 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,445 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,021,711 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,721 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,661 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,391 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,866 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,637 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,455 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,788 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,806 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,964 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,128 |
| Territories of the United States | 0 | - | 4.79 | 52,352 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,618 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,345 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,303 |
| New York City Geography | 0 | - | 4.42 | 33,074 |
| States of Mexico | 0 | - | 4.95 | 175,741 |
| Mexico States Map Quiz | 0 | - | 4.85 | 104,593 |
| Central American Countries | 0 | - | 4.98 | 156,298 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 148,145 |
| Top U.S. Universities | 0 | - | 4.15 | 144,981 |
| U.S. States by Governor | 0 | - | 4.43 | 18,054 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,680 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,658 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,477 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,570 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,163 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,897 |
| United States Country Quiz | 0 | - | 4.43 | 101,415 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,850 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,340 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,642 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,297 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,146 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,925 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,860 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 209,013 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,085 |
| Branches of the U.S. Military | 0 | - | 4.39 | 24,347 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,855 |
| New England States | 0 | - | 4.51 | 59,793 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,765 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,997 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,751 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 55,948 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,889 |
| U.S. States by Borders | 0 | - | 4.61 | 35,278 |
| Save Americans by Guessing U.S. States | 0 | - | 4.63 | 185,368 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,453 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,990 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,196 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,608 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.72 | 33,006 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,630 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,147 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,355 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,644 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,814 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,776 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,379 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,465 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,932 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 46,866 |
| Countries that Beat Canada | 0 | - | 4.90 | 89,305 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,443 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,702 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,035 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,033 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,452 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,170 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,111 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,565 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,497 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,865 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,147 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.42 | 59,400 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.74 | 63,824 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,481 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,754 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,856 |
| Flags of North and South America | 0 | - | 4.99 | 372,457 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,549 |
| South America Map Quiz | 0 | - | 5.00 | 1,548,467 |
| Belize Country Quiz | 0 | - | 4.85 | 20,951 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,196 |
| Largest United States Airlines | 0 | - | 4.39 | 55,009 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,687 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,059 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,827 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,099 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,129 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 123,329 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,443 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,703 |
| Cities with the Biggest Economies | 0 | - | 4.90 | 130,774 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,711 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,820 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,519 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,100 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 55,933 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,716 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,812 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,511 |
| Flyover States | 0 | - | 4.52 | 29,496 |
| U.S. States With Double Letters | 0 | - | 4.54 | 24,095 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 76,099 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,313 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,674 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,543 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,372 |
| US States with the Most Executions | 0 | - | 4.51 | 26,389 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,050 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,490 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,953 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,131 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,547 |
| The Only American Country ... | 0 | - | 4.92 | 121,485 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,016 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,748 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,376 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,111 |
| Which Island in the United States? | 0 | - | 4.29 | 29,471 |
| American Foods | 0 | - | 3.66 | 39,366 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,242 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,739 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,313 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,881 |
| Old West History | 0 | - | 4.34 | 15,267 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,517 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,920 |
| US States Quiz | 0 | - | 5.00 | 16,849,961 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,563 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,840 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,277 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,652 |
| Canada Country Quiz | 0 | - | 4.54 | 132,401 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 124,124 |
| Canada A-Z | 0 | - | 4.73 | 32,797 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,007 |
| Monarchies of Europe | 0 | - | 4.90 | 98,029 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,100 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,832 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,435 |
| Monarchies of Asia | 0 | - | 4.97 | 71,028 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,813 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 195,037 |
| Countries with the Most Exports | 0 | - | 4.96 | 155,236 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 189,534 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,337 |
| Richest Island Countries | 0 | - | 4.84 | 100,390 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,344 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 95,109 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 270,854 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,156 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,440 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,479 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,219 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,388 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,355 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,827 |
| History of Mexico | 0 | - | 4.58 | 15,299 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,841 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,772 |
