| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,850 |
| United States Map Quiz | 0 | - | 4.98 | 4,171,938 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,590 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,114 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,906 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,973 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 75,052 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,284 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,726 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,510 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,447 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 246,621 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,750 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,537 |
| Pixelated United States Map | 0 | - | 4.88 | 94,835 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,592 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,472 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,103 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,309 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,340 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,392 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,411 |
| U.S. States By Population | 0 | - | 4.92 | 154,176 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,259 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,915 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,101 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,885 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,550 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,127 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 161,079 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,255 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,705 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,837 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,668 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 68,007 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,031,987 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,719 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,499 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,057 |
| Canada Provinces and Territories | 0 | - | 5.00 | 346,424 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,756 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,110 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,099 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,441 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,690 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,849 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 65,130 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,721 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,014 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,868 |
| States of Mexico | 0 | - | 4.96 | 178,350 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,682 |
| Central American Countries | 0 | - | 4.98 | 157,383 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,621 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 150,739 |
| Top U.S. Universities | 0 | - | 4.15 | 145,869 |
| Territories of the United States | 0 | - | 4.80 | 52,635 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,896 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 176,136 |
| U.S. States by Governor | 0 | - | 4.43 | 18,115 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,769 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,782 |
| New York City Geography | 0 | - | 4.43 | 33,190 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,976 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,001 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,403 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,765 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,465 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 95,342 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,756 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,680 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,283 |
| American Legal Vocabulary | 0 | - | 4.40 | 34,025 |
| United States Country Quiz | 0 | - | 4.43 | 102,233 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,076 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,480 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,823 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,605 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,630 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,521 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,120 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,217 |
| Name a World Capital A-Z | 0 | - | 5.00 | 177,091 |
| Name a Country A-Z | 0 | - | 5.00 | 245,831 |
| Name a Disney/Pixar Movie A-Z | 0 | - | 4.84 | 53,278 |
| Name a Valid Country A-Z | 0 | - | 4.98 | 123,057 |
| American Foods | 0 | - | 3.66 | 39,444 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 749,917 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 107,055 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,155 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,453 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,984 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,568 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,125 |
| New England States | 0 | - | 4.51 | 59,901 |
| U.S. States by Land Area | 0 | - | 4.55 | 53,069 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,123 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,168 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,293 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,154 |
| U.S. States by Borders | 0 | - | 4.62 | 35,488 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 188,944 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,688 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,350 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,456 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,942 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,232 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,834 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,477 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,525 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,874 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,385 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,286 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,588 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 83,090 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,300 |
| Countries that Beat Canada | 0 | - | 4.90 | 99,026 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,631 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,235 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,775 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,084 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,089 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,903 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,557 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,231 |
| African-American Historical Figures | 0 | - | 4.18 | 17,300 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,332 |
| 7 Deadly Sins | 0 | - | 4.88 | 404,242 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,427 |
| Flags of North and South America | 0 | - | 4.99 | 377,273 |
| South America Map Quiz | 0 | - | 5.00 | 1,556,993 |
| Belize Country Quiz | 0 | - | 4.85 | 21,098 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,305 |
| Largest United States Airlines | 0 | - | 4.39 | 55,167 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,747 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,911 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 56,261 |
| Events in U.S. History | 0 | - | 4.41 | 28,832 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,203 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,661 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.70 | 61,096 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.62 | 45,271 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,988 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,277 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.44 | 70,636 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.74 | 64,211 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,576 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,839 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,867 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 77,048 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,102,737 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,921 |
| Latin American Countries Map Quiz | 0 | - | 4.98 | 130,694 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,942 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,992 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,739 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,300 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 94,409 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,786 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 75,068 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,573 |
| Flyover States | 0 | - | 4.53 | 29,602 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,276 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,417 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,993 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,801 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,725 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,545 |
| US States with the Most Executions | 0 | - | 4.51 | 26,424 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,170 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,685 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,278 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.40 | 47,100 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,253 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,887 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,512 |
| Marvel Cinematic Universe - All Movies | 0 | - | 4.89 | 343,409 |
| Category Elimination - Disney Animated Movies | 0 | - | 4.08 | 50,169 |
| The Only American Country ... | 0 | - | 4.92 | 122,236 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,293 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,203 |
| Which Island in the United States? | 0 | - | 4.29 | 29,791 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,337 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.27 | 14,823 |
| Old West History | 0 | - | 4.34 | 15,303 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,536 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,988 |
| US States Quiz | 0 | - | 5.00 | 17,002,324 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,634 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,937 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,375 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,738 |
| Canada Country Quiz | 0 | - | 4.55 | 133,075 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,624 |
| Canada A-Z | 0 | - | 4.73 | 32,977 |
| Canada Decoder | 0 | - | 4.07 | 18,776 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,014 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,797 |
| Monarchies of Europe | 0 | - | 4.90 | 98,908 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,926 |
