| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,170 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,958 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,798 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,359 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,324 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,738 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,818 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,789 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,321 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,192 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,213 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,075 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,593 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,075 |
| Pixelated United States Map | 0 | - | 4.87 | 94,068 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,341 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,510 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,640 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,164 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,204 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,690 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,962 |
| U.S. States By Population | 0 | - | 4.92 | 153,007 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,185 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,313 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,377 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,126 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,101 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,459 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,773 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,514 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,044 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,425 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,113 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,372 |
| Top U.S. Universities | 0 | - | 4.15 | 144,849 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,548 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,536 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,596 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,336 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,370 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,157 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,372 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,488 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,703 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,843 |
| Territories of the United States | 0 | - | 4.79 | 52,333 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,571 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,264 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,240 |
| New York City Geography | 0 | - | 4.42 | 33,054 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,923 |
| States of Mexico | 0 | - | 4.95 | 175,499 |
| Mexico States Map Quiz | 0 | - | 4.85 | 104,467 |
| Central American Countries | 0 | - | 4.98 | 155,887 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 147,899 |
| U.S. States by Governor | 0 | - | 4.43 | 18,044 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,671 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,649 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,450 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,461 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,559 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,159 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,883 |
| United States Country Quiz | 0 | - | 4.43 | 101,313 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,823 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,325 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,512 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,256 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,023 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,887 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,761 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,127 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,848 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,045 |
| Branches of the U.S. Military | 0 | - | 4.39 | 24,327 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,822 |
| New England States | 0 | - | 4.51 | 59,782 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,747 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,982 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,689 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 55,914 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,873 |
| U.S. States by Borders | 0 | - | 4.61 | 35,257 |
| Save Americans by Guessing U.S. States | 0 | - | 4.63 | 185,067 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,425 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,943 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,174 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,573 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.72 | 32,977 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,569 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,117 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,340 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,621 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,759 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,725 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,353 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,387 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,890 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 46,824 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,290 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,426 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,694 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,030 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,025 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,434 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,145 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,090 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,478 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,394 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,853 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,127 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.42 | 59,357 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.74 | 63,788 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,465 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,732 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,833 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 147,977 |
| Flags of North and South America | 0 | - | 4.99 | 371,901 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,289 |
| South America Map Quiz | 0 | - | 5.00 | 1,547,318 |
| Belize Country Quiz | 0 | - | 4.85 | 20,933 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,176 |
| Largest United States Airlines | 0 | - | 4.39 | 54,991 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,653 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,982 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,822 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,089 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,673 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,800 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,504 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,081 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 55,909 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,707 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,783 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,507 |
| Flyover States | 0 | - | 4.52 | 29,478 |
| U.S. States With Double Letters | 0 | - | 4.54 | 24,076 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 76,071 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,275 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,667 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,518 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,332 |
| US States with the Most Executions | 0 | - | 4.51 | 26,385 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,035 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,472 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,916 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,111 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,515 |
| The Only American Country ... | 0 | - | 4.92 | 121,402 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,931 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,699 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,066 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,101 |
| Which Island in the United States? | 0 | - | 4.29 | 29,425 |
| American Foods | 0 | - | 3.66 | 39,358 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,221 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,725 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,293 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,867 |
| Old West History | 0 | - | 4.33 | 15,258 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,517 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,913 |
| US States Quiz | 0 | - | 5.00 | 16,831,308 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,550 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,832 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,271 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,640 |
| Canada Country Quiz | 0 | - | 4.54 | 132,321 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 124,070 |
| Canada A-Z | 0 | - | 4.73 | 32,773 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,904 |
| Monarchies of Europe | 0 | - | 4.90 | 97,950 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 77,947 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,705 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,406 |
| Monarchies of Asia | 0 | - | 4.97 | 70,981 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,776 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,088 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,332 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,293 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,783 |
| History of Mexico | 0 | - | 4.58 | 15,291 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,777 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,667 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,863 |
| States of Brazil | 0 | - | 4.97 | 87,657 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,189 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 746,222 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,417 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 138,221 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,071 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 93,492 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,538 |
| Politicians with Other Careers | 0 | - | 3.98 | 15,012 |
| Main Parts of the U.S. Budget | 0 | - | 3.45 | 8,706 |
| California Multiple Choice | 0 | - | 4.40 | 28,087 |
| Geography of California | 0 | - | 4.26 | 10,550 |
| California Pro Sport Teams | 0 | - | 4.19 | 22,677 |
| San Francisco Trivia | 0 | - | 4.32 | 15,693 |
