| U.S. Citizenship Test Questions | 0 | - | 4.86 | 223,233 |
| United States Map Quiz | 0 | - | 4.98 | 3,921,639 |
| U.S. State Border Crossings | 0 | - | 4.96 | 82,667 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.84 | 34,188 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 65,949 |
| Cities and Towns of Massachusetts | 0 | - | 4.90 | 61,429 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 55,385 |
| Total United States Immigration by Country | 0 | - | 4.89 | 97,491 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 148,315 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.94 | 187,287 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 67,925 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 341,845 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.85 | 22,148 |
| Major non-NATO U.S. Allies | 0 | - | 4.43 | 33,705 |
| Pixelated United States Map | 0 | - | 4.90 | 82,982 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 94,453 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 79,618 |
| The 13 Colonies Quiz | 0 | - | 4.96 | 101,261 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 97,039 |
| 10 Southernmost U.S. States | 0 | - | 4.85 | 100,122 |
| U.S. States with Short Names | 0 | - | 4.87 | 131,159 |
| U.S. States that Start with M | 0 | - | 4.91 | 151,723 |
| U.S. States By Population | 0 | - | 4.90 | 130,888 |
| U.S. States that Start with N | 0 | - | 4.95 | 156,389 |
| U.S. States with Longest Names | 0 | - | 4.85 | 36,454 |
| 10 Northernmost U.S. States | 0 | - | 4.89 | 74,418 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 78,475 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 58,732 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 56,658 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 146,295 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 168,431 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 99,524 |
| Top 10 Least Obese U.S. States | 0 | - | 4.81 | 68,929 |
| Countries of North America Quiz | 0 | - | 5.00 | 890,060 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 588,576 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 90,893 |
| Countries that Beat the United States | 0 | - | 4.92 | 147,116 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 90,305 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 73,845 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 856,456 |
| North American Capitals - Map Quiz | 0 | - | 4.91 | 47,825 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.98 | 48,548 |
| U.S. Federal Holidays | 0 | - | 4.29 | 96,186 |
| Canada Provinces and Territories | 0 | - | 5.00 | 292,070 |
| States of Mexico | 0 | - | 4.94 | 143,536 |
| Mexico States Map Quiz | 0 | - | 4.84 | 91,389 |
| Central American Countries | 0 | - | 4.98 | 140,599 |
| Caribbean Countries and Territories | 0 | - | 4.83 | 104,993 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 117,517 |
| Territories of the United States | 0 | - | 4.77 | 48,823 |
| Most Mentioned Enemies of the USA | 0 | - | 4.79 | 161,032 |
| U.S. State Nicknames Quiz | 0 | - | 4.48 | 46,512 |
| U.S. National Parks Quiz | 0 | - | 4.78 | 47,298 |
| Countries with American Expatriates | 0 | - | 4.58 | 41,064 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 38,483 |
| United States Country Quiz | 0 | - | 4.44 | 90,114 |
| Busiest Air Routes from the U.S. | 0 | - | 4.47 | 72,869 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.78 | 57,652 |
| Canada or Africa by Area | 0 | - | 4.81 | 14,081 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 5,717 |
| American Legal Vocabulary | 0 | - | 4.40 | 32,276 |
| Countries Closest to Canada | 0 | - | 4.90 | 185,439 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.46 | 13,843 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 199,420 |
| New England States | 0 | - | 4.52 | 52,513 |
| US States by Land Area | 0 | - | 4.54 | 48,773 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 36,334 |
| Add a Letter - Make a U.S. State | 0 | - | 4.75 | 76,987 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 51,431 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.78 | 37,517 |
| Save Americans by Guessing U.S. States | 0 | - | 4.57 | 152,792 |
| 10 Easternmost U.S. States | 0 | - | 4.54 | 53,213 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 82,966 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.47 | 40,740 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.47 | 94,050 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.79 | 56,544 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 61,645 |
| Top 10 Newest U.S. States | 0 | - | 4.79 | 68,422 |
| Top 10 Most Asian U.S. States | 0 | - | 4.79 | 61,974 |
| Top 10 Most Obese U.S. States | 0 | - | 4.52 | 77,157 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.49 | 64,913 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.45 | 48,619 |
| Top 10 Most White U.S. States | 0 | - | 4.53 | 56,122 |
| Top 10 Most German U.S. States | 0 | - | 4.50 | 42,473 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.44 | 37,655 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.65 | 42,362 |
| Countries that Beat Canada | 0 | - | 4.91 | 78,775 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.89 | 58,381 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.86 | 91,970 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.75 | 54,227 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.76 | 53,096 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.75 | 42,619 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 58,446 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 34,125 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.41 | 50,176 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.65 | 46,876 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.54 | 31,847 |
| Georgia ... or Georgia? | 0 | - | 4.79 | 72,358 |
| The Americas Geography by Letter - B | 0 | - | 4.51 | 49,049 |
| The Americas Geography by Letter - S | 0 | - | 4.56 | 41,669 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 108,407 |
| South America Map Quiz | 0 | - | 5.00 | 1,430,697 |
| Belize Country Quiz | 0 | - | 4.88 | 18,941 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 17,237 |
| Top U.S. Universities | 0 | - | 4.12 | 114,180 |
| Largest United States Airlines | 0 | - | 4.38 | 52,237 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 107,834 |
| U.S. States by Governor Quiz | 0 | - | 4.42 | 17,011 |
| U.S. Political Parties in History | 0 | - | 4.43 | 26,264 |
| U.S. Government Agencies | 0 | - | 4.41 | 17,798 |
| Florida Pro Sport Teams | 0 | - | 4.66 | 10,453 |
| Canada Immigration by Country | 0 | - | 4.52 | 57,637 |
| Canada A-Z | 0 | - | 4.70 | 30,728 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.90 | 80,311 |
| Asian Geography By Letter - B | 0 | - | 4.83 | 62,088 |
| Flags of North and South America Quiz | 0 | - | 4.99 | 313,286 |
| The Only American Country ... | 0 | - | 4.94 | 110,660 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 101,616 |
| Dominica Country Quiz | 0 | - | 4.83 | 17,962 |
| North America Capitals Quiz | 0 | - | 4.99 | 188,444 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.11 | 26,113 |
| American Islands | 0 | - | 4.16 | 15,798 |
| American Foods | 0 | - | 3.71 | 38,240 |
| U.S. Cities by Picture #1 | 0 | - | 4.37 | 31,939 |
| Cities by Picture #2 | 0 | - | 4.22 | 32,592 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.19 | 13,710 |
| U.S. Groups of Four Quiz | 0 | - | 4.37 | 23,445 |
| U.S. Groups of Three Quiz | 0 | - | 4.05 | 19,608 |
| American Geography Quiz for Dummies | 0 | - | 4.33 | 53,311 |
| The U.S. Government - How Does it Work? | 0 | - | 4.32 | 40,041 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.40 | 56,009 |
| New York City Geography | 0 | - | 4.40 | 23,458 |
| Old West History | 0 | - | 4.28 | 14,810 |
| Life of Benjamin Franklin | 0 | - | 4.20 | 6,235 |
| American Revolution - Multiple Choice | 0 | - | 4.32 | 18,889 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.34 | 71,123 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.49 | 20,570 |
| Flyover States | 0 | - | 4.51 | 28,105 |
| U.S. States With Double Letters | 0 | - | 4.67 | 4,422 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.30 | 58,127 |
| U.S. States by Borders | 0 | - | 4.56 | 26,494 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.38 | 121,336 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.46 | 27,864 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.71 | 30,120 |
| U.S. States with Oldest Median Age | 0 | - | 4.32 | 31,877 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.30 | 41,200 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.34 | 63,330 |
| US States with the Most Executions | 0 | - | 4.51 | 25,719 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.60 | 27,142 |
| Top 10 Least White U.S. States | 0 | - | 4.19 | 36,726 |
| Top 10 Least Happy U.S. States | 0 | - | 4.55 | 22,440 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 66,954 |
| US States Quiz | 0 | - | 5.00 | 14,890,803 |
| U.S. States with the Lowest HDI | 0 | - | 4.46 | 27,576 |
| Which U.S. State - Multiple Choice | 0 | - | 4.45 | 19,064 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 40,330 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.49 | 35,261 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.60 | 31,212 |
| Canada Country Quiz | 0 | - | 4.54 | 122,198 |
| Canada Cities Map Quiz | 0 | - | 4.55 | 109,985 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 82,277 |
| American Countries With No Atlantic Coastline | 0 | - | 4.90 | 73,641 |
| The Americas Geography by Letter - C | 0 | - | 4.28 | 54,811 |
| The Americas Geography by Letter - A | 0 | - | 4.29 | 41,921 |
| The Americas Geography by Letter - T | 0 | - | 4.23 | 38,621 |
| The Americas Geography by Letter - P | 0 | - | 4.36 | 36,376 |
| The Americas Geography by Letter - M | 0 | - | 4.40 | 36,390 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.12 | 16,480 |
| History of Mexico | 0 | - | 4.55 | 14,001 |
| Countries of South America with an Empty Map | 0 | - | 4.95 | 95,142 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.91 | 40,901 |
| Brazil States Map Quiz | 0 | - | 4.83 | 40,270 |
| States of Brazil | 0 | - | 4.97 | 69,983 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 18,476 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.18 | 704,859 |
| U.S. States by Picture #1 | 0 | - | 4.17 | 14,415 |
| Most-Visited U.S. Cities | 0 | - | 4.87 | 73,988 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 63,744 |
| Senators Who Ran For President | 0 | - | 4.28 | 16,339 |
| U.S. Electoral College Landslides | 0 | - | 4.33 | 21,069 |
| California Multiple Choice | 0 | - | 4.40 | 26,949 |
| Geography of California | 0 | - | 4.23 | 9,714 |
| California Pro Sport Teams | 0 | - | 4.25 | 22,154 |
| San Francisco Trivia | 0 | - | 4.34 | 15,229 |
| San Francisco A-Z | 0 | - | 4.20 | 9,070 |
| Florida Multiple Choice | 0 | - | 4.30 | 9,750 |
| Chicago City Trivia | 0 | - | 4.26 | 30,461 |
| Boston Trivia | 0 | - | 4.37 | 23,483 |
| Boston Talk to English Translation Quiz | 0 | - | 4.46 | 14,241 |
| New York Pro Sport Teams | 0 | - | 4.30 | 24,689 |
| Texas Pro Sport Teams | 0 | - | 4.13 | 16,263 |
| History of Pennsylvania | 0 | - | 4.09 | 6,482 |
| History of Virginia | 0 | - | 4.33 | 10,973 |
| Washington State by Picture | 0 | - | 4.18 | 7,175 |
| Events in U.S. History | 0 | - | 4.38 | 26,289 |
| Embarrassing Chapters in US History | 0 | - | 4.15 | 31,578 |
| African-American Historical Figures | 0 | - | 4.14 | 16,439 |
| Capitals of Canadian Provinces | 0 | - | 4.86 | 74,103 |
| Most-Visited Countries by Canadians | 0 | - | 4.79 | 37,993 |
| Canadian Geography on the Map | 0 | - | 4.56 | 24,330 |
