| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,323 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,773 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,526 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,739 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,954 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,864 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,063 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,491 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,933 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,657 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,146 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,900 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,620 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,254 |
| Pixelated United States Map | 0 | - | 4.89 | 93,474 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,459 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,848 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,252 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,727 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,355 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,410 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,668 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,903 |
| U.S. States By Population | 0 | - | 4.92 | 152,362 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,402 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,863 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,899 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,549 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,763 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,879 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,875 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,078 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,483 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,066 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,658 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,827 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,607 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,887 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,936 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,571 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,090 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,928 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,836 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,778 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,952 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,971 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,084 |
| States of Mexico | 0 | - | 4.95 | 173,332 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,786 |
| Central American Countries | 0 | - | 4.98 | 155,045 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 145,889 |
| Top U.S. Universities | 0 | - | 4.15 | 144,067 |
| Territories of the United States | 0 | - | 4.79 | 52,145 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,374 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,544 |
| U.S. States by Governor | 0 | - | 4.43 | 17,984 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,573 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,545 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 54,937 |
| New York City Geography | 0 | - | 4.42 | 32,930 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,261 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,475 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,076 |
| United States Country Quiz | 0 | - | 4.43 | 100,580 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,601 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,652 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,094 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,109 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,792 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,166 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,355 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,096 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,943 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,631 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 207,857 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,710 |
| 75 Americans Named John | 0 | - | 4.41 | 23,825 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,589 |
| New England States | 0 | - | 4.51 | 59,707 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,473 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,883 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,314 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 55,641 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,664 |
| U.S. States by Borders | 0 | - | 4.63 | 35,069 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 182,539 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,238 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,137 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 43,991 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,306 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.70 | 32,782 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,412 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 74,875 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,208 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,408 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 89,971 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,334 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,152 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 81,871 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,574 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,847 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,912 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,279 |
| Countries with NO Military | 0 | - | 4.97 | 61,169 |
| Senators Who Ran For President | 0 | - | 4.24 | 16,993 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 21,972 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,277 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,029 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.67 | 44,960 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,862 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,658 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,766 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,015 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.42 | 59,025 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.74 | 63,505 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,391 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,665 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,551 |
| Georgia ... or Georgia? | 0 | - | 4.69 | 76,418 |
| Flags of North and South America | 0 | - | 4.99 | 367,172 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,221 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,183 |
| Belize Country Quiz | 0 | - | 4.85 | 20,805 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,052 |
| Largest United States Airlines | 0 | - | 4.39 | 54,834 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,377 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,410 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,752 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 55,691 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,993 |
| The American Civil War | 0 | - | 4.62 | 52,156 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,223 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,259 |
| The Only American Country ... | 0 | - | 4.92 | 120,757 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,336 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,670 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,854 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,034 |
| Which Island in the United States? | 0 | - | 4.29 | 29,156 |
| American Foods | 0 | - | 3.66 | 39,276 |
| U.S. Cities by Picture #1 | 0 | - | 4.37 | 34,354 |
| Cities by Picture #2 | 0 | - | 4.19 | 34,936 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,666 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,187 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,803 |
| Old West History | 0 | - | 4.33 | 15,223 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,490 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,852 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,643 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,607 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,463 |
| Flyover States | 0 | - | 4.52 | 29,396 |
| U.S. States With Double Letters | 0 | - | 4.54 | 23,916 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 75,811 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 127,992 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.44 | 29,579 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,359 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,159 |
| US States with the Most Executions | 0 | - | 4.51 | 26,349 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 28,921 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,612 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.40 | 40,067 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,025 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,328 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,214 |
| Monarchies of Europe | 0 | - | 4.90 | 97,307 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,247 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,783 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,995 |
| Monarchies of Asia | 0 | - | 4.97 | 70,599 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,432 |
| Military History Vocabulary | 0 | - | 4.91 | 66,647 |
| Battle to Country | 0 | - | 4.91 | 52,519 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,325 |
| US States Quiz | 0 | - | 5.00 | 16,700,176 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,493 |
| U.S. States with the Lowest HDI | 0 | - | 4.46 | 28,763 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,195 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,576 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,312 |
| Canada Country Quiz | 0 | - | 4.54 | 131,706 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,608 |
| Canada A-Z | 0 | - | 4.73 | 32,647 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,094 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,905 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,533 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,076 |
| History of Mexico | 0 | - | 4.58 | 15,230 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,155 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,959 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,382 |
| States of Brazil | 0 | - | 4.98 | 86,380 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,157 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,193 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,358 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 137,671 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,962 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,364 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,743 |
| Politicians with Other Careers | 0 | - | 3.98 | 14,983 |
