| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,574 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,408 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,035 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,399 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,756 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,794 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,751 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,167 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,319 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,140 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,256 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,725 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,584 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,206 |
| Pixelated United States Map | 0 | - | 4.88 | 94,640 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,244 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,227 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,552 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,767 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,980 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,993 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,643 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,993 |
| U.S. States By Population | 0 | - | 4.92 | 153,947 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,976 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,747 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,935 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,699 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,437 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,949 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,495 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,065 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,559 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,749 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,551 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,884 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,685 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,053 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,038 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,306 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,265 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,910 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,915 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 904,139 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,548 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,663 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,604 |
| States of Mexico | 0 | - | 4.96 | 177,572 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,433 |
| Central American Countries | 0 | - | 4.98 | 157,100 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,137 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 149,771 |
| Top U.S. Universities | 0 | - | 4.15 | 145,615 |
| Territories of the United States | 0 | - | 4.80 | 52,552 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,816 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,933 |
| U.S. States by Governor | 0 | - | 4.43 | 18,105 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,738 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,748 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,608 |
| New York City Geography | 0 | - | 4.43 | 33,163 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,660 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,642 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,254 |
| United States Country Quiz | 0 | - | 4.43 | 101,986 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,018 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,145 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,866 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,141 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,988 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,433 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,526 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,860 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,576 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,723 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,752 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,214 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,336 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,041 |
| New England States | 0 | - | 4.51 | 59,872 |
| U.S. States by Land Area | 0 | - | 4.63 | 52,982 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,087 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,024 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,211 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,083 |
| U.S. States by Borders | 0 | - | 4.61 | 35,429 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 187,899 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,631 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,251 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,396 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,850 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,171 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,792 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,380 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,465 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,809 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,232 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,158 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,531 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,920 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,185 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 47,040 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,791 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,738 |
| Countries with NO Military | 0 | - | 4.97 | 62,933 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,331 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,069 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,068 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,577 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,293 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,224 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,670 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,290 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,941 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,238 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.44 | 69,692 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.74 | 64,154 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,555 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,817 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,129 |
| Flags of North and South America | 0 | - | 4.99 | 375,760 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,377 |
| South America Map Quiz | 0 | - | 5.00 | 1,553,975 |
| Belize Country Quiz | 0 | - | 4.85 | 21,057 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,280 |
| Largest United States Airlines | 0 | - | 4.39 | 55,120 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,915 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,536 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,888 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 56,145 |
| Events in U.S. History | 0 | - | 4.41 | 28,780 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,172 |
| The American Civil War | 0 | - | 4.62 | 52,581 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,804 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,952 |
| Countries with the Most Tanks | 0 | - | 4.91 | 107,980 |
| The Only American Country ... | 0 | - | 4.92 | 122,039 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,492 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,900 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,446 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,175 |
| Which Island in the United States? | 0 | - | 4.29 | 29,694 |
| American Foods | 0 | - | 3.66 | 39,425 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,318 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,674 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,241 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.27 | 14,802 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,403 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,957 |
| Old West History | 0 | - | 4.34 | 15,292 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,530 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,972 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,767 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,994 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,554 |
| Flyover States | 0 | - | 4.52 | 29,572 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,221 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,339 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,875 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,764 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,668 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,490 |
| US States with the Most Executions | 0 | - | 4.51 | 26,417 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,134 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,192 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,213 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,536 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,590 |
| Monarchies of Europe | 0 | - | 4.90 | 98,611 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,224 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,678 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,867 |
| Monarchies of Asia | 0 | - | 4.97 | 71,372 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,168 |
| Military History Vocabulary | 0 | - | 4.91 | 67,512 |
| Battle to Country | 0 | - | 4.91 | 53,741 |
| US States Quiz | 0 | - | 5.00 | 16,959,159 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,617 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,913 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,346 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,716 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,630 |
| Canada Country Quiz | 0 | - | 4.55 | 132,877 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,490 |
| Canada A-Z | 0 | - | 4.73 | 32,928 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,680 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,816 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 53,248 |
| History of Mexico | 0 | - | 4.52 | 15,354 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,307 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,504 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,421 |
| States of Brazil | 0 | - | 4.97 | 89,165 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,224 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 748,956 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,489 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 138,898 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,411 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,586 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 82,313 |
