| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,401 |
| United States Map Quiz | 0 | - | 4.98 | 4,157,401 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,861 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,455 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,435 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,968 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,917 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,919 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,592 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,436 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,870 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,198 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,944 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,175 |
| Pixelated United States Map | 0 | - | 4.87 | 94,242 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,603 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,721 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,823 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,369 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,378 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,935 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,216 |
| U.S. States By Population | 0 | - | 4.92 | 153,509 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,394 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,420 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,487 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,257 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,195 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,583 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,917 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,680 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,159 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,482 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,197 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,485 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,022,668 |
| Top U.S. Universities | 0 | - | 4.15 | 145,086 |
| Canada Provinces and Territories | 0 | - | 5.00 | 342,315 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 640,124 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,351 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,726 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,446 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,511 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,001 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,902 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,055 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,136 |
| States of Mexico | 0 | - | 4.95 | 175,927 |
| Mexico States Map Quiz | 0 | - | 4.85 | 104,698 |
| Central American Countries | 0 | - | 4.98 | 156,411 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 148,334 |
| Territories of the United States | 0 | - | 4.79 | 52,380 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,654 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,419 |
| U.S. States by Governor | 0 | - | 4.43 | 18,060 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,690 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,671 |
| New York City Geography | 0 | - | 4.42 | 33,091 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,498 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,578 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,169 |
| United States Country Quiz | 0 | - | 4.43 | 101,473 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,867 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,959 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,912 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,128 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,908 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,355 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,742 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,365 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,296 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,457 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,971 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,707 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 209,396 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,124 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,876 |
| New England States | 0 | - | 4.51 | 59,805 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,794 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,006 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,797 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 55,987 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,914 |
| U.S. States by Borders | 0 | - | 4.61 | 35,303 |
| Save Americans by Guessing U.S. States | 0 | - | 4.63 | 185,624 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,475 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,026 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,210 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,636 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.70 | 33,026 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,647 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,175 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,369 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,672 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,861 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,820 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,403 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,528 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,960 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 46,890 |
| Countries that Beat Canada | 0 | - | 4.91 | 96,304 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 148,357 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,038 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,036 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,471 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,181 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,123 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,620 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,601 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,874 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,156 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.42 | 59,432 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,488 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,767 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,889 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,751 |
| Flags of North and South America | 0 | - | 4.99 | 372,869 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,713 |
| South America Map Quiz | 0 | - | 5.00 | 1,549,188 |
| Belize Country Quiz | 0 | - | 4.85 | 20,966 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,209 |
| Largest United States Airlines | 0 | - | 4.39 | 55,022 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,714 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,121 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,839 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 55,957 |
| Events in U.S. History | 0 | - | 4.41 | 28,662 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,108 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,582 |
| The Only American Country ... | 0 | - | 4.92 | 121,565 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,080 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,828 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,600 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,118 |
| Which Island in the United States? | 0 | - | 4.29 | 29,501 |
| American Foods | 0 | - | 3.66 | 39,376 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,254 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,549 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,123 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,755 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,322 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,890 |
| Old West History | 0 | - | 4.34 | 15,272 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,518 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,925 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,728 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,838 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,519 |
| Flyover States | 0 | - | 4.52 | 29,506 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,107 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 76,140 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,351 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,689 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,556 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,393 |
| US States with the Most Executions | 0 | - | 4.51 | 26,394 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,056 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,993 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,146 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,081 |
| Monarchies of Europe | 0 | - | 4.90 | 98,109 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,393 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,927 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,485 |
| Monarchies of Asia | 0 | - | 4.97 | 71,073 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,868 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,784 |
| US States Quiz | 0 | - | 5.00 | 16,866,107 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,569 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,843 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,287 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,660 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,510 |
| Canada Country Quiz | 0 | - | 4.54 | 132,459 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 124,177 |
| Canada A-Z | 0 | - | 4.73 | 32,829 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,308 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,438 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,396 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,852 |
| History of Mexico | 0 | - | 4.58 | 15,305 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,892 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,862 |
| Brazil States Map Quiz | 0 | - | 4.85 | 48,018 |
| States of Brazil | 0 | - | 4.97 | 87,948 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,197 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 746,963 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,433 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 138,311 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,805 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 93,765 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,747 |
| Politicians with Other Careers | 0 | - | 3.98 | 15,018 |
| Main Parts of the U.S. Budget | 0 | - | 3.45 | 8,711 |
| California Multiple Choice | 0 | - | 4.40 | 28,101 |
| Geography of California | 0 | - | 4.26 | 10,563 |
| California Pro Sport Teams | 0 | - | 4.19 | 22,684 |
| San Francisco Trivia | 0 | - | 4.32 | 15,700 |
| San Francisco A-Z | 0 | - | 4.18 | 9,570 |
| Florida Multiple Choice | 0 | - | 4.33 | 10,182 |
