| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,728 |
| United States Map Quiz | 0 | - | 4.98 | 4,147,129 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,649 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,917 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,160 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,111 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,370 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,654 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,498 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,953 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,656 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,010 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,857 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,988 |
| Pixelated United States Map | 0 | - | 4.89 | 93,752 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,910 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,179 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,653 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,249 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,839 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,828 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,245 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,480 |
| U.S. States By Population | 0 | - | 4.92 | 152,720 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,810 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,115 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,132 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,888 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,948 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,197 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,426 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,299 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,771 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,251 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,919 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,116 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,016,211 |
| Canada Provinces and Territories | 0 | - | 5.00 | 339,512 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 637,499 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,055 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,339 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,150 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,065 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,586 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,308 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,355 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,234 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,380 |
| States of Mexico | 0 | - | 4.95 | 174,376 |
| Mexico States Map Quiz | 0 | - | 4.84 | 104,108 |
| Central American Countries | 0 | - | 4.98 | 155,435 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 146,626 |
| Top U.S. Universities | 0 | - | 4.15 | 144,439 |
| Territories of the United States | 0 | - | 4.79 | 52,241 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,465 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,911 |
| U.S. States by Governor | 0 | - | 4.43 | 18,008 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,610 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,591 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,101 |
| New York City Geography | 0 | - | 4.42 | 33,008 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,373 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,511 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,119 |
| United States Country Quiz | 0 | - | 4.43 | 100,951 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,708 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,764 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,368 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,117 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,834 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,249 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,156 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,651 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,181 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,363 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,673 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,345 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,887 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,704 |
| New England States | 0 | - | 4.51 | 59,742 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,607 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,939 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,526 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 55,795 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,767 |
| U.S. States by Borders | 0 | - | 4.63 | 35,172 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 183,644 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,343 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,751 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,069 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,430 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.70 | 32,882 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,494 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,001 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,271 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,526 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,521 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,523 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,248 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,118 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,741 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,078 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,081 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,946 |
| Countries with NO Military | 0 | - | 4.97 | 61,496 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,010 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,010 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,354 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,091 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.67 | 45,018 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,158 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,013 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,812 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,072 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.42 | 59,180 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.73 | 63,670 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,428 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,700 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,667 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,567 |
| Flags of North and South America | 0 | - | 4.99 | 369,621 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,724 |
| South America Map Quiz | 0 | - | 5.00 | 1,543,847 |
| Belize Country Quiz | 0 | - | 4.85 | 20,864 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,108 |
| Largest United States Airlines | 0 | - | 4.39 | 54,907 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,506 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,739 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,783 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 55,811 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,037 |
| The American Civil War | 0 | - | 4.62 | 52,255 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,349 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,661 |
| The Only American Country ... | 0 | - | 4.92 | 121,108 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,672 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,727 |
| North America Capitals Quiz | 0 | - | 4.99 | 217,973 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,077 |
| Which Island in the United States? | 0 | - | 4.29 | 29,301 |
| American Foods | 0 | - | 3.66 | 39,320 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.94 | 32,129 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,422 |
| Cities by Picture #2 | 0 | - | 4.19 | 34,998 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,697 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,246 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,834 |
| Old West History | 0 | - | 4.33 | 15,236 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,505 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,886 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,674 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,691 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,483 |
| Flyover States | 0 | - | 4.52 | 29,439 |
| U.S. States With Double Letters | 0 | - | 4.54 | 23,994 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 75,947 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,132 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.44 | 29,620 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,441 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,244 |
| US States with the Most Executions | 0 | - | 4.51 | 26,364 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 28,973 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,763 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.42 | 44,617 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,070 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,586 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,521 |
| Monarchies of Europe | 0 | - | 4.90 | 97,632 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,627 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,234 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,158 |
| Monarchies of Asia | 0 | - | 4.97 | 70,785 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,586 |
| Military History Vocabulary | 0 | - | 4.91 | 66,817 |
| Battle to Country | 0 | - | 4.91 | 52,831 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,500 |
| US States Quiz | 0 | - | 5.00 | 16,764,529 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,517 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,805 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,234 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,606 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,392 |
| Canada Country Quiz | 0 | - | 4.55 | 132,016 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,822 |
| Canada A-Z | 0 | - | 4.73 | 32,711 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,495 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,091 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,946 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,432 |
| History of Mexico | 0 | - | 4.58 | 15,252 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,471 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,311 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,596 |
| States of Brazil | 0 | - | 4.97 | 86,964 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,168 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 744,826 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,383 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 138,041 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 329,416 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,885 |
