| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,139 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,477 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,793 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,067 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,346 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,314 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,719 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,803 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,767 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,294 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,168 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,131 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,061 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,540 |
| Pixelated United States Map | 0 | - | 4.87 | 94,055 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,316 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,492 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,480 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,621 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,141 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,181 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,673 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,936 |
| U.S. States By Population | 0 | - | 4.92 | 152,983 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,169 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,305 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,367 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,110 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,094 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,444 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,751 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,492 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,033 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,414 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,100 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,360 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,234 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,150 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,051 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,505 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,584 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,334 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,349 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,432 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,686 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,811 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,879 |
| States of Mexico | 0 | - | 4.95 | 175,441 |
| Mexico States Map Quiz | 0 | - | 4.85 | 104,436 |
| Central American Countries | 0 | - | 4.98 | 155,851 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 147,690 |
| Top U.S. Universities | 0 | - | 4.15 | 144,826 |
| Territories of the United States | 0 | - | 4.79 | 52,323 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,568 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,239 |
| U.S. States by Governor | 0 | - | 4.43 | 18,039 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,664 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,647 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,231 |
| New York City Geography | 0 | - | 4.42 | 33,051 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,456 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,550 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,157 |
| United States Country Quiz | 0 | - | 4.43 | 101,287 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,814 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,882 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,333 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,125 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,880 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,322 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,248 |
| Countries Closest to Canada | 0 | - | 4.91 | 197,996 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,422 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,728 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,694 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,815 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,033 |
| 75 Americans Named John | 0 | - | 4.41 | 23,888 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,818 |
| New England States | 0 | - | 4.51 | 59,780 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,742 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,979 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,680 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 55,905 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,860 |
| U.S. States by Borders | 0 | - | 4.61 | 35,254 |
| Save Americans by Guessing U.S. States | 0 | - | 4.63 | 184,960 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,421 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,933 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,170 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,565 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.72 | 32,969 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,562 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,112 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,339 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,616 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,746 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,712 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,350 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,371 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,883 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 46,814 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,276 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,334 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,738 |
| Countries with NO Military | 0 | - | 4.97 | 61,919 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,029 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,025 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,431 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,142 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,084 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,459 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,376 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,850 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,124 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.42 | 59,339 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.73 | 63,778 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,463 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,731 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,832 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,668 |
| Flags of North and South America | 0 | - | 4.99 | 371,761 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,254 |
| South America Map Quiz | 0 | - | 5.00 | 1,547,088 |
| Belize Country Quiz | 0 | - | 4.85 | 20,928 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,172 |
| Largest United States Airlines | 0 | - | 4.39 | 54,986 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,637 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,962 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,822 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 55,905 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,089 |
| The American Civil War | 0 | - | 4.62 | 52,366 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,506 |
| Countries with the Most Tanks | 0 | - | 4.91 | 107,083 |
| The Only American Country ... | 0 | - | 4.92 | 121,379 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,909 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,791 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,977 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,101 |
| Which Island in the United States? | 0 | - | 4.29 | 29,415 |
| American Foods | 0 | - | 3.66 | 39,356 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,217 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,500 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,080 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,721 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,288 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,866 |
| Old West History | 0 | - | 4.33 | 15,257 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,517 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,912 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,707 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,774 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,505 |
| Flyover States | 0 | - | 4.52 | 29,474 |
| U.S. States With Double Letters | 0 | - | 4.54 | 24,075 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 76,062 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,267 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,666 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,511 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,329 |
| US States with the Most Executions | 0 | - | 4.51 | 26,385 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,033 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,909 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,107 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,874 |
| Monarchies of Europe | 0 | - | 4.90 | 97,927 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,900 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,659 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,393 |
| Monarchies of Asia | 0 | - | 4.97 | 70,962 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,765 |
| Military History Vocabulary | 0 | - | 4.91 | 67,019 |
| Battle to Country | 0 | - | 4.91 | 53,120 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,683 |
| US States Quiz | 0 | - | 5.00 | 16,827,439 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,549 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,832 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,268 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,637 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,469 |
| Canada Country Quiz | 0 | - | 4.54 | 132,310 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 124,043 |
| Canada A-Z | 0 | - | 4.73 | 32,769 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,045 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,319 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,270 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,764 |
| History of Mexico | 0 | - | 4.58 | 15,290 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,768 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,617 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,834 |
| States of Brazil | 0 | - | 4.97 | 87,561 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,189 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 746,122 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,415 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 138,207 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 330,959 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 93,441 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,506 |
