| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,564 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,299 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,241 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,033 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,751 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,788 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,742 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,164 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,190 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,318 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,128 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,701 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,579 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,394 |
| Pixelated United States Map | 0 | - | 4.88 | 94,636 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,240 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,219 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,760 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,969 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,980 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,632 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,984 |
| U.S. States By Population | 0 | - | 4.92 | 153,940 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,966 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,741 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,933 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,693 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,435 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,945 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,493 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,063 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,557 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,749 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,550 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,879 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,565 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,290 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,262 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,904 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,022 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,988 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,910 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 904,124 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,335 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,485 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,533 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,651 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,668 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,599 |
| States of Mexico | 0 | - | 4.96 | 177,546 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,428 |
| Central American Countries | 0 | - | 4.98 | 157,079 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,124 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 149,739 |
| Top U.S. Universities | 0 | - | 4.15 | 145,598 |
| Territories of the United States | 0 | - | 4.80 | 52,547 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,814 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,929 |
| U.S. States by Governor | 0 | - | 4.43 | 18,104 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,737 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,748 |
| New York City Geography | 0 | - | 4.43 | 33,162 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,018 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,336 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,702 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,404 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,898 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,854 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,658 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,642 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,252 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,988 |
| United States Country Quiz | 0 | - | 4.43 | 101,979 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,017 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,432 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,547 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,577 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,523 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,856 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,752 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,141 |
| Name a World Capital A-Z | 0 | - | 5.00 | 176,751 |
| Name a Country A-Z | 0 | - | 5.00 | 244,931 |
| Name a Disney/Pixar Movie A-Z | 0 | - | 4.84 | 52,826 |
| Name a Valid Country A-Z | 0 | - | 4.98 | 122,555 |
| American Foods | 0 | - | 3.66 | 39,425 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 748,932 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,718 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,137 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,402 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,956 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,205 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,038 |
| New England States | 0 | - | 4.51 | 59,870 |
| U.S. States by Land Area | 0 | - | 4.63 | 52,980 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,085 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,019 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,210 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,080 |
| U.S. States by Borders | 0 | - | 4.61 | 35,427 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 187,864 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,629 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,246 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,393 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,848 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,170 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,790 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,376 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,464 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,806 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,231 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,155 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,531 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,920 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,184 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 47,038 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,787 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,574 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,224 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,751 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,069 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,068 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,665 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,285 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,126 |
| African-American Historical Figures | 0 | - | 4.18 | 17,252 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,209 |
| 7 Deadly Sins | 0 | - | 4.88 | 402,545 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,329 |
| Flags of North and South America | 0 | - | 4.99 | 375,706 |
| South America Map Quiz | 0 | - | 5.00 | 1,553,904 |
| Belize Country Quiz | 0 | - | 4.85 | 21,056 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,279 |
| Largest United States Airlines | 0 | - | 4.39 | 55,120 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,532 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,888 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 56,132 |
| Events in U.S. History | 0 | - | 4.41 | 28,777 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,172 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,576 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,291 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,224 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,941 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,238 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,555 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,817 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,751 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,950 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,100,838 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 322,732 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,465 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,372 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,899 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,915 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,674 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,239 |
| Name a Valid Answer - United States #1 | 0 | - | 4.62 | 94,267 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,767 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,990 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,554 |
| Flyover States | 0 | - | 4.52 | 29,570 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,221 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,336 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,863 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,762 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,667 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,490 |
| US States with the Most Executions | 0 | - | 4.51 | 26,417 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,134 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,630 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,187 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,212 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,802 |
| Marvel Cinematic Universe - All Movies | 0 | - | 4.89 | 342,010 |
| Category Elimination - Disney Animated Movies | 0 | - | 4.08 | 49,999 |
| The Only American Country ... | 0 | - | 4.92 | 122,030 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,429 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,174 |
| Which Island in the United States? | 0 | - | 4.29 | 29,690 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,315 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.27 | 14,800 |
| Old West History | 0 | - | 4.34 | 15,292 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,529 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,970 |
| US States Quiz | 0 | - | 5.00 | 16,957,827 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,615 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,912 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,345 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,716 |
| Canada Country Quiz | 0 | - | 4.55 | 132,871 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,489 |
| Canada A-Z | 0 | - | 4.73 | 32,927 |
| Canada Decoder | 0 | - | 4.07 | 18,752 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,518 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,580 |
| Monarchies of Europe | 0 | - | 4.90 | 98,600 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,196 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,863 |
| Monarchies of Asia | 0 | - | 4.97 | 71,369 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,159 |
