| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,020 |
| United States Map Quiz | 0 | - | 4.98 | 4,165,068 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,974 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,660 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,681 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,516 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,085 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,484 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,190 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,972 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,021 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,195 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,476 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,954 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,641 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,329 |
| Pixelated United States Map | 0 | - | 4.88 | 94,529 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,065 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,083 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,257 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,816 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,777 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,440 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,769 |
| U.S. States By Population | 0 | - | 4.92 | 153,822 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,816 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,645 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,788 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,593 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,363 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,851 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,355 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,991 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,458 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,702 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,483 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,785 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,026,987 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,267 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,239 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,970 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,013 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,657 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,820 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,206 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,318 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,498 |
| States of Mexico | 0 | - | 4.96 | 177,125 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,291 |
| Central American Countries | 0 | - | 4.98 | 156,907 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,036 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 149,319 |
| Top U.S. Universities | 0 | - | 4.15 | 145,461 |
| Territories of the United States | 0 | - | 4.80 | 52,496 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,767 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,799 |
| U.S. States by Governor | 0 | - | 4.43 | 18,084 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,724 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,720 |
| New York City Geography | 0 | - | 4.42 | 33,139 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,628 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,628 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,227 |
| United States Country Quiz | 0 | - | 4.43 | 101,832 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,985 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,094 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,967 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,410 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,367 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,486 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,706 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,542 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,513 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,741 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 209,985 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,278 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 59,988 |
| New England States | 0 | - | 4.51 | 59,852 |
| U.S. States by Land Area | 0 | - | 4.63 | 52,930 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,056 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 82,957 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,153 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 41,029 |
| U.S. States by Borders | 0 | - | 4.62 | 35,398 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 186,936 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,579 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,184 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,287 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,774 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,123 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,767 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,322 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,443 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,772 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,131 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,073 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,499 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,805 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,117 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 46,989 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,638 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,063 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,062 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,553 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,261 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,195 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,404 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,058 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,921 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,217 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.42 | 59,591 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,537 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,805 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 62,054 |
| Flags of North and South America | 0 | - | 4.99 | 374,898 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,228 |
| South America Map Quiz | 0 | - | 5.00 | 1,552,550 |
| Belize Country Quiz | 0 | - | 4.85 | 21,027 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,260 |
| Largest United States Airlines | 0 | - | 4.39 | 55,091 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,840 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,423 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,872 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 56,061 |
| Events in U.S. History | 0 | - | 4.41 | 28,735 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,147 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,742 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,905 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,182 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 124,154 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,800 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,981 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 131,353 |
| The Only American Country ... | 0 | - | 4.92 | 121,903 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,364 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,878 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,916 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,160 |
| Which Island in the United States? | 0 | - | 4.29 | 29,642 |
| American Foods | 0 | - | 3.66 | 39,414 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,299 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,639 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,205 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.27 | 14,785 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,378 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,935 |
| Old West History | 0 | - | 4.34 | 15,289 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,529 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,962 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,752 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,938 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,548 |
| Flyover States | 0 | - | 4.52 | 29,549 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,195 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,290 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,542 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,746 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,639 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,467 |
| US States with the Most Executions | 0 | - | 4.51 | 26,413 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,115 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,128 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,194 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,231 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,482 |
| Monarchies of Europe | 0 | - | 4.90 | 98,455 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,524 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,475 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,774 |
| Monarchies of Asia | 0 | - | 4.97 | 71,300 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,088 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 195,644 |
| Countries with the Most Exports | 0 | - | 4.96 | 155,749 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 190,096 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,581 |
| Richest Island Countries | 0 | - | 4.85 | 100,892 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,675 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 95,294 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 273,118 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,628 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,781 |
| US States Quiz | 0 | - | 5.00 | 16,934,867 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,608 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,888 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,330 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,693 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,586 |
| Canada Country Quiz | 0 | - | 4.54 | 132,753 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,415 |
| Canada A-Z | 0 | - | 4.73 | 32,908 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,622 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,750 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 53,203 |
| History of Mexico | 0 | - | 4.58 | 15,341 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,191 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,298 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,332 |
| States of Brazil | 0 | - | 4.97 | 88,877 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,214 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 748,401 |
