| United States Map Quiz | 0 | - | 4.98 | 4,172,048 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,908 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,856 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,977 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 75,055 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,285 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,203 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,516 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,452 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,597 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 246,647 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,122 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,754 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,734 |
| Pixelated United States Map | 0 | - | 4.88 | 94,840 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,604 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,477 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,106 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,321 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,344 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,392 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,419 |
| U.S. States By Population | 0 | - | 4.92 | 154,183 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,272 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,919 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,105 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,890 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,554 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,133 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 161,086 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,258 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,710 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,842 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,669 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 68,010 |
| Events in U.S. History | 0 | - | 4.41 | 28,833 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,032,078 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,731 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,504 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,058 |
| Canada Provinces and Territories | 0 | - | 5.00 | 346,470 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,798 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,114 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,124 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,787 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,852 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 65,154 |
| Old West History | 0 | - | 4.34 | 15,306 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,536 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,988 |
| Territories of the United States | 0 | - | 4.80 | 52,635 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,901 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 176,145 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,539 |
| New York City Geography | 0 | - | 4.43 | 33,191 |
| States of Mexico | 0 | - | 4.96 | 178,371 |
| Mexico States Map Quiz | 0 | - | 4.85 | 105,692 |
| Central American Countries | 0 | - | 4.98 | 157,385 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,624 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 150,754 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,757 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,680 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,284 |
| United States Country Quiz | 0 | - | 4.43 | 102,239 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,077 |
| Three Real and One Fake - U.S. History | 0 | - | 4.33 | 25,849 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,727,341 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,833 |
| U.S. History Multiple Choice #2 | 0 | - | 4.33 | 25,127 |
| U.S. History Multiple Choice #1 | 0 | - | 4.29 | 22,291 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,605 |
| U.S. History Multiple Choice #4 | 0 | - | 4.24 | 25,668 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,633 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,528 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,600 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,220 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,574 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,448 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,129 |
| New England States | 0 | - | 4.51 | 59,903 |
| U.S. States by Land Area | 0 | - | 4.55 | 53,072 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,125 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,173 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,296 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,156 |
| U.S. States by Borders | 0 | - | 4.62 | 35,491 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 188,975 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,690 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,354 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,456 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,945 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,234 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,835 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,478 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,525 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,876 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,388 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,289 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,592 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 83,093 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,300 |
| Countries that Beat Canada | 0 | - | 4.90 | 99,033 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,632 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,775 |
| 75 Americans Named John | 0 | - | 4.41 | 23,977 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,723 |
| History of Pennsylvania | 0 | - | 4.16 | 7,168 |
| History of Virginia | 0 | - | 4.33 | 11,643 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,661 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.70 | 61,143 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.62 | 45,272 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,988 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,278 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.44 | 70,646 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.74 | 64,215 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,576 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,839 |
| Flags of North and South America | 0 | - | 4.99 | 377,331 |
| Latin American Countries Map Quiz | 0 | - | 4.98 | 130,707 |
| South America Map Quiz | 0 | - | 5.00 | 1,557,068 |
| Belize Country Quiz | 0 | - | 4.85 | 21,102 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,306 |
| Top U.S. Universities | 0 | - | 4.15 | 145,878 |
| Largest United States Airlines | 0 | - | 4.39 | 55,167 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,996 |
| U.S. States by Governor | 0 | - | 4.43 | 18,115 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,771 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,784 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,620 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,911 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,542 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,944 |
| American Legal Vocabulary | 0 | - | 4.40 | 34,025 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,739 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,301 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,481 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,685 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 56,261 |
| People on Money - United States | 0 | - | 4.31 | 63,437 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,593 |
| The Life of Thomas Edison | 0 | - | 3.95 | 4,930 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 75,068 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,573 |
| Flyover States | 0 | - | 4.53 | 29,602 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,278 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,419 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,996 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,803 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,727 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,547 |
| US States with the Most Executions | 0 | - | 4.51 | 26,426 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,170 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,688 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,281 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.40 | 47,102 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,253 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,889 |
| Georgia ... or Georgia? | 0 | - | 4.68 | 77,051 |
| The Only American Country ... | 0 | - | 4.92 | 122,244 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,694 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,343 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,204 |
| Which Island in the United States? | 0 | - | 4.29 | 29,793 |
| American Inventions #1 | 0 | - | 3.62 | 31,538 |
| American Inventions #2 | 0 | - | 3.93 | 15,897 |
| American Foods | 0 | - | 3.66 | 39,445 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,155 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,337 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.27 | 14,825 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,455 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,985 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,525 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,864 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,896 |
| US States Quiz | 0 | - | 5.00 | 17,003,649 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,634 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,937 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,376 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,739 |
| Canada Country Quiz | 0 | - | 4.55 | 133,081 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,627 |
| Canada A-Z | 0 | - | 4.73 | 32,977 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,427 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,616 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,854 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,900 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,624 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,873 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,834 |
| History of Mexico | 0 | - | 4.52 | 15,367 |
| Countries of South America with an Empty Map | 0 | - | 4.95 | 105,531 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.93 | 54,917 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,647 |
| States of Brazil | 0 | - | 4.97 | 89,809 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,235 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,518 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 335,646 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 95,089 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 83,144 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,085 |
