| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,159 |
| United States Map Quiz | 0 | - | 4.98 | 4,139,650 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,023 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,478 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,834 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,753 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 72,966 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,433 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,050 |
| Name the U.S. National Parks | 0 | - | 4.85 | 57,474 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,513 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 239,956 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,529 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,678 |
| Pixelated United States Map | 0 | - | 4.89 | 93,304 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,283 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,712 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,578 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,203 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,266 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,479 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,752 |
| U.S. States By Population | 0 | - | 4.92 | 152,251 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,254 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,772 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,836 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,446 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,705 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,780 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,771 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,029 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,395 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,022 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,608 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,735 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,445 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,386 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 100,962 |
| U.S. States with the Most Immigrants | 0 | - | 4.84 | 81,861 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,270 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,321 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,747 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,487 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,664 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,260 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,853 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,787 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 54,886 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,647 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 90,972 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,000 |
| States of Mexico | 0 | - | 4.95 | 173,022 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,671 |
| Central American Countries | 0 | - | 4.98 | 154,914 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 145,561 |
| Top U.S. Universities | 0 | - | 4.15 | 143,911 |
| Territories of the United States | 0 | - | 4.79 | 52,101 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,344 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,432 |
| U.S. States by Governor | 0 | - | 4.43 | 17,971 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,555 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,526 |
| New York City Geography | 0 | - | 4.42 | 32,875 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,213 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,905 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,550 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,437 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,047 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,230 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,456 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,062 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,778 |
| United States Country Quiz | 0 | - | 4.43 | 100,465 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,574 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,133 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,122 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,432 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,231 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,849 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,603 |
| Name a World Capital A-Z | 0 | - | 5.00 | 174,805 |
| Name a Country A-Z | 0 | - | 5.00 | 240,003 |
| Name a Disney/Pixar Movie A-Z | 0 | - | 4.89 | 50,268 |
| Name a Valid Country A-Z | 0 | - | 4.97 | 119,896 |
| American Foods | 0 | - | 3.66 | 39,269 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 742,755 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,701 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,106 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,172 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,789 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 207,664 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,552 |
| New England States | 0 | - | 4.51 | 59,696 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,417 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,872 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,256 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 55,591 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,634 |
| U.S. States by Borders | 0 | - | 4.63 | 35,044 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 182,250 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,209 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,084 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 43,964 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,266 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.70 | 32,747 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,387 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 74,831 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,190 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,382 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 89,891 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,253 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,125 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 81,785 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,513 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,779 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,070 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,153 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,625 |
| Senators Who Ran For President | 0 | - | 4.23 | 16,985 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 21,961 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,779 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,558 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,507 |
| African-American Historical Figures | 0 | - | 4.18 | 17,114 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,481 |
| 7 Deadly Sins | 0 | - | 4.88 | 394,277 |
| Georgia ... or Georgia? | 0 | - | 4.69 | 76,363 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,831 |
| Flags of North and South America | 0 | - | 4.99 | 365,527 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,253 |
| Belize Country Quiz | 0 | - | 4.85 | 20,781 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,031 |
| Largest United States Airlines | 0 | - | 4.39 | 54,814 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,308 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,742 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 55,656 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,975 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,254 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,010 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.67 | 44,946 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,755 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,003 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.42 | 58,968 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.74 | 63,421 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,380 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,653 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,064 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,089,800 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 316,552 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 127,938 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,649 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,341 |
| U.S. Cities by Picture #1 | 0 | - | 4.37 | 34,325 |
| Cities by Picture #2 | 0 | - | 4.19 | 34,914 |
| Name a Valid Answer - United States #1 | 0 | - | 4.63 | 93,375 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,633 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,567 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,450 |
| Flyover States | 0 | - | 4.52 | 29,375 |
| U.S. States With Double Letters | 0 | - | 4.54 | 23,886 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 75,764 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 127,956 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.44 | 29,565 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,337 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,130 |
| US States with the Most Executions | 0 | - | 4.51 | 26,346 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 28,903 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,291 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,561 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.40 | 40,049 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,010 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,162 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,225 |
| Marvel Cinematic Universe - All Movies | 0 | - | 4.89 | 331,988 |
| Category Elimination - Disney Animated Movies | 0 | - | 4.08 | 49,150 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,971 |
| The Only American Country ... | 0 | - | 4.92 | 120,658 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,273 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,496 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,027 |
| Which Island in the United States? | 0 | - | 4.29 | 29,122 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,652 |
| Old West History | 0 | - | 4.32 | 15,211 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,486 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,838 |
| US States Quiz | 0 | - | 5.00 | 16,679,016 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,477 |
| U.S. States with the Lowest HDI | 0 | - | 4.46 | 28,754 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,189 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,561 |
| Canada Country Quiz | 0 | - | 4.54 | 131,624 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,553 |
| Canada A-Z | 0 | - | 4.73 | 32,625 |
| Canada Decoder | 0 | - | 4.12 | 18,635 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,264 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,112 |
| Monarchies of Europe | 0 | - | 4.90 | 97,207 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,121 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,928 |
| Monarchies of Asia | 0 | - | 4.97 | 70,539 |
