| United States Map Quiz | 0 | - | 4.98 | 4,166,591 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,731 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,523 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,761 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,683 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,142 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,286 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,085 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,177 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,537 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,011 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,552 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,111 |
| Pixelated United States Map | 0 | - | 4.88 | 94,614 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,192 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,186 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,707 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,927 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,928 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,567 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,922 |
| U.S. States By Population | 0 | - | 4.92 | 153,905 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,922 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,715 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,904 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,672 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,422 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,922 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,448 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,048 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,534 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,736 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,527 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,853 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,129 |
| Events in U.S. History | 0 | - | 4.41 | 28,767 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,159 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,787 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,755 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,211 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,179 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,820 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,881 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,764 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,710 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,422 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,596 |
| Old West History | 0 | - | 4.34 | 15,292 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,529 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,967 |
| States of Mexico | 0 | - | 4.96 | 177,400 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,394 |
| Central American Countries | 0 | - | 4.98 | 157,022 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,100 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 149,611 |
| Territories of the United States | 0 | - | 4.80 | 52,522 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,800 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,901 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,374 |
| New York City Geography | 0 | - | 4.43 | 33,157 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,650 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,638 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,248 |
| United States Country Quiz | 0 | - | 4.43 | 101,938 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,006 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,121 |
| Three Real and One Fake - U.S. History | 0 | - | 4.33 | 25,813 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,716,140 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,492 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 25,106 |
| U.S. History Multiple Choice #1 | 0 | - | 4.29 | 22,273 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,573 |
| U.S. History Multiple Choice #4 | 0 | - | 4.24 | 25,641 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,517 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,819 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,582 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,565 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,745 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,135 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,320 |
| 75 Americans Named John | 0 | - | 4.41 | 23,948 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,025 |
| New England States | 0 | - | 4.51 | 59,865 |
| U.S. States by Land Area | 0 | - | 4.63 | 52,965 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,069 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,002 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,186 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,062 |
| U.S. States by Borders | 0 | - | 4.61 | 35,419 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 187,616 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,620 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,231 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,323 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,835 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,154 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,784 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,355 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,458 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,795 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,203 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,134 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,521 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,894 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,164 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 47,026 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,742 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,575 |
| History of Pennsylvania | 0 | - | 4.16 | 7,156 |
| History of Virginia | 0 | - | 4.31 | 11,626 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,571 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,286 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,213 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,933 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,231 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.42 | 67,023 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.74 | 64,097 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,550 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,814 |
| Flags of North and South America | 0 | - | 4.99 | 375,430 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,332 |
| South America Map Quiz | 0 | - | 5.00 | 1,553,409 |
| Belize Country Quiz | 0 | - | 4.85 | 21,049 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,274 |
| Top U.S. Universities | 0 | - | 4.15 | 145,564 |
| Largest United States Airlines | 0 | - | 4.39 | 55,111 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,898 |
| U.S. States by Governor | 0 | - | 4.43 | 18,096 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,733 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,734 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,883 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 56,089 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,787 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,980 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,930 |
| The Only American Country ... | 0 | - | 4.92 | 121,985 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,454 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,897 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,272 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,169 |
| Which Island in the United States? | 0 | - | 4.29 | 29,674 |
| American Inventions #1 | 0 | - | 3.63 | 31,524 |
| American Inventions #2 | 0 | - | 3.93 | 15,880 |
| American Foods | 0 | - | 3.66 | 39,423 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,136 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,308 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,981 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,663 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,230 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.27 | 14,794 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,396 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,950 |
| Branches of the U.S. Military | 0 | - | 4.39 | 24,453 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,425 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,759 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,964 |
| People on Money - United States | 0 | - | 4.31 | 63,398 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,546 |
| The Life of Thomas Edison | 0 | - | 3.95 | 4,920 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,973 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,554 |
| Flyover States | 0 | - | 4.52 | 29,568 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,215 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,323 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,579 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,756 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,660 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,481 |
| US States with the Most Executions | 0 | - | 4.51 | 26,416 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,127 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,172 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,209 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,997 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,415 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,396 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,536 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,316 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,180 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,688 |
| US States Quiz | 0 | - | 5.00 | 16,950,579 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,612 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,905 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,338 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,707 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,617 |
| Canada Country Quiz | 0 | - | 4.54 | 132,834 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,470 |
| Canada A-Z | 0 | - | 4.73 | 32,924 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,564 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,663 |
| History of Mexico | 0 | - | 4.58 | 15,348 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,274 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,438 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,374 |
| States of Brazil | 0 | - | 4.97 | 89,073 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,221 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,486 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,158 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,508 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 82,253 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,069 |
