| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,997 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,826 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,175 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,607 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,971 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 76,081 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 75,258 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,343 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,608 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,581 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,786 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 247,095 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,838 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,916 |
| Pixelated United States Map | 0 | - | 4.89 | 94,952 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,771 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,620 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,032 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,208 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,455 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,472 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,544 |
| U.S. States that Start with M | 0 | - | 4.94 | 188,592 |
| U.S. States By Population | 0 | - | 4.92 | 154,273 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,393 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,994 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,183 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,995 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,608 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,223 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 161,188 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,329 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,784 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,883 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,730 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 68,074 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,033,610 |
| Canada Provinces and Territories | 0 | - | 5.00 | 347,196 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 645,470 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,934 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,592 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,120 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,213 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,561 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,998 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 65,344 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,965 |
| States of Mexico | 0 | - | 4.96 | 178,815 |
| Mexico States Map Quiz | 0 | - | 4.85 | 105,798 |
| Central American Countries | 0 | - | 4.98 | 157,579 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,698 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 151,111 |
| Top U.S. Universities | 0 | - | 4.15 | 146,017 |
| Territories of the United States | 0 | - | 4.80 | 52,676 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,935 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 176,263 |
| U.S. States by Governor | 0 | - | 4.43 | 18,125 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,786 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,809 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,782 |
| New York City Geography | 0 | - | 4.43 | 33,204 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,810 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,701 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,297 |
| United States Country Quiz | 0 | - | 4.43 | 102,368 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,105 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,264 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.92 | 95,721 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,161 |
| American Legal Vocabulary | 0 | - | 4.40 | 34,049 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,503 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,668 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,678 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,653 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 107,228 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,781 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,771 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,495 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,168 |
| New England States | 0 | - | 4.51 | 59,915 |
| U.S. States by Land Area | 0 | - | 4.55 | 53,117 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,139 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,233 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,342 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,191 |
| U.S. States by Borders | 0 | - | 4.61 | 35,517 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 189,317 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,722 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,407 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,486 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,990 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,274 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,855 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,539 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,542 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,912 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,463 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,349 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,620 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 83,172 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,340 |
| Countries that Beat Canada | 0 | - | 4.90 | 99,139 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 292,005 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 278,134 |
| Countries with NO Military | 0 | - | 4.97 | 63,633 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,092 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,102 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,689 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.70 | 61,542 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.62 | 45,299 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 126,058 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,718 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,997 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,300 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.44 | 70,752 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.74 | 64,257 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,586 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,853 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,288 |
| Flags of North and South America | 0 | - | 4.99 | 378,262 |
| Latin American Countries Map Quiz | 0 | - | 4.98 | 130,896 |
| South America Map Quiz | 0 | - | 5.00 | 1,558,611 |
| Belize Country Quiz | 0 | - | 4.85 | 21,121 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,319 |
| Largest United States Airlines | 0 | - | 4.39 | 55,187 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,039 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,844 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,918 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 56,301 |
| Events in U.S. History | 0 | - | 4.41 | 28,863 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,222 |
| The American Civil War | 0 | - | 4.62 | 52,667 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,942 |
| Georgia ... or Georgia? | 0 | - | 4.68 | 77,107 |
| Countries with the Most Tanks | 0 | - | 4.91 | 108,487 |
| The Only American Country ... | 0 | - | 4.92 | 122,362 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,791 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,963 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,717 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,212 |
| Which Island in the United States? | 0 | - | 4.29 | 29,839 |
| American Foods | 0 | - | 3.66 | 39,459 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,352 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,768 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,336 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.27 | 14,840 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,468 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,999 |
| Old West History | 0 | - | 4.34 | 15,309 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,539 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 20,000 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,809 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 75,122 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,581 |
| Flyover States | 0 | - | 4.53 | 29,619 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,309 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,461 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 129,054 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,824 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,744 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,574 |
| US States with the Most Executions | 0 | - | 4.51 | 26,432 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,185 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,338 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.40 | 47,139 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,276 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,109 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,920 |
| Monarchies of Europe | 0 | - | 4.90 | 99,050 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,103 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,199 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,119 |
| Monarchies of Asia | 0 | - | 4.97 | 71,621 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,368 |
| Military History Vocabulary | 0 | - | 4.92 | 67,773 |
| Battle to Country | 0 | - | 4.91 | 54,135 |
| US States Quiz | 0 | - | 5.00 | 17,025,913 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,642 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,947 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,388 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,747 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,712 |
| Canada Country Quiz | 0 | - | 4.55 | 133,192 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,704 |
| Canada A-Z | 0 | - | 4.73 | 32,998 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,911 |
| U.S. Geography by Letter - B | 0 | - | 4.54 | 70,162 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 58,603 |
| History of Mexico | 0 | - | 4.52 | 15,376 |
| Countries of South America with an Empty Map | 0 | - | 4.95 | 105,640 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.93 | 55,066 |
| Brazil States Map Quiz | 0 | - | 4.87 | 48,743 |
| States of Brazil | 0 | - | 4.98 | 90,069 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,240 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 750,413 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,525 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 139,110 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 336,353 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 95,320 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 83,485 |
