| United States Map Quiz | 0 | - | 4.98 | 4,167,491 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,758 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,582 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,797 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,755 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,169 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,919 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,216 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,323 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,144 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,266 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,745 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,042 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,587 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,767 |
| The Most Recent... United States | 0 | - | 4.46 | 18,541 |
| Pixelated United States Map | 0 | - | 4.88 | 94,643 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,250 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,232 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,774 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,993 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,011 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,653 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,007 |
| U.S. States By Population | 0 | - | 4.92 | 153,957 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,982 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,754 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,938 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,706 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,440 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,952 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,503 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,068 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,561 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,752 |
| 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 | 67,887 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,751 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,311 |
| Events in U.S. History | 0 | - | 4.41 | 28,780 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,172 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,272 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,912 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,079 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,076 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,585 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 904,152 |
| New York True or False? | 0 | - | 4.53 | 33,909 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 25,112 |
| U.S. History Multiple Choice #1 | 0 | - | 4.29 | 22,277 |
| U.S. History Multiple Choice #4 | 0 | - | 4.24 | 25,650 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,586 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,676 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,610 |
| 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 |
| States of Mexico | 0 | - | 4.96 | 177,598 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,439 |
| Central American Countries | 0 | - | 4.98 | 157,104 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,141 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 149,791 |
| Territories of the United States | 0 | - | 4.80 | 52,553 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,820 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,936 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,403 |
| New York City Geography | 0 | - | 4.43 | 33,164 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,666 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,642 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,259 |
| United States Country Quiz | 0 | - | 4.43 | 101,993 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,020 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,434 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,718,275 |
| Florida True or False? | 0 | - | 4.48 | 28,746 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,558 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,583 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,527 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,866 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,147 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,218 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,343 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,043 |
| New England States | 0 | - | 4.51 | 59,872 |
| U.S. States by Land Area | 0 | - | 4.63 | 52,984 |
| 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 | 83,028 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,215 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,085 |
| U.S. States by Borders | 0 | - | 4.61 | 35,431 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 187,912 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,346 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,635 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,253 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,397 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,851 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,173 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,794 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,380 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,467 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,811 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,233 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,158 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,533 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,923 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,188 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 47,040 |
| Ten Most Rectangular U.S. States | 0 | - | 4.54 | 71,651 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,798 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,579 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,753 |
| 75 Americans Named John | 0 | - | 4.41 | 23,955 |
| California Multiple Choice | 0 | - | 4.40 | 28,155 |
| Florida Multiple Choice | 0 | - | 4.33 | 10,196 |
| History of Pennsylvania | 0 | - | 4.16 | 7,159 |
| History of Virginia | 0 | - | 4.31 | 11,630 |
| Flags of North and South America | 0 | - | 4.99 | 375,805 |
| South America Map Quiz | 0 | - | 5.00 | 1,554,001 |
| Belize Country Quiz | 0 | - | 4.85 | 21,058 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,284 |
| Top U.S. Universities | 0 | - | 4.15 | 145,619 |
| Largest United States Airlines | 0 | - | 4.39 | 55,121 |
| U.S. States by Governor | 0 | - | 4.43 | 18,106 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,740 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,751 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,922 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,890 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 56,153 |
| North Carolina... or South Carolina? | 0 | - | 4.21 | 10,554 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,579 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,295 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,226 |
| 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 | 36,240 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.44 | 69,749 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.74 | 64,156 |
| 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 |
| Canada True or False? | 0 | - | 4.57 | 55,062 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,957 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,383 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,902 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,916 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,989 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,674 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,244 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,096 |
| Washington... or Washington D.C.? | 0 | - | 4.33 | 26,572 |
| People on Money - United States | 0 | - | 4.31 | 63,402 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,557 |
| The Life of Thomas Edison | 0 | - | 3.95 | 4,921 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,997 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,554 |
| Flyover States | 0 | - | 4.52 | 29,573 |
| 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 | 42,670 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,491 |
| US States with the Most Executions | 0 | - | 4.51 | 26,418 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,135 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,630 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,194 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,213 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,806 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,049 |
| The Only American Country ... | 0 | - | 4.92 | 122,041 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,495 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,463 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,175 |
| Which Island in the United States? | 0 | - | 4.29 | 29,699 |
| American Inventions #1 | 0 | - | 3.62 | 31,525 |
| American Inventions #2 | 0 | - | 3.93 | 15,883 |
| American Foods | 0 | - | 3.66 | 39,425 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,142 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,318 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.27 | 14,802 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,405 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,959 |
| U.S. Analogies | 0 | - | 4.27 | 19,711 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,467 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,303 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,738 |
| US States Quiz | 0 | - | 5.00 | 16,960,115 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,618 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,915 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,717 |
| Canada Country Quiz | 0 | - | 4.55 | 132,883 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,492 |
| Canada A-Z | 0 | - | 4.73 | 32,929 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,067 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,624 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,470 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,610 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,368 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,540 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,876 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,609 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,685 |
