| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,801 |
| United States Map Quiz | 0 | - | 4.98 | 4,170,845 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,090 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,871 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,923 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,965 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,248 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,451 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,370 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,508 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 246,360 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,709 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,590 |
| Pixelated United States Map | 0 | - | 4.88 | 94,790 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,510 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,422 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,743 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,054 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,246 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,265 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,316 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,333 |
| U.S. States By Population | 0 | - | 4.92 | 154,111 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,196 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,873 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,053 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,843 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,531 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,075 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,950 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,208 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,662 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,812 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,639 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,975 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,031,021 |
| Canada Provinces and Territories | 0 | - | 5.00 | 346,041 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,494 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,626 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,433 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,012 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,059 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 904,944 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,799 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,977 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,502 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,817 |
| States of Mexico | 0 | - | 4.96 | 178,177 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,581 |
| Central American Countries | 0 | - | 4.98 | 157,291 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,573 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 150,440 |
| Top U.S. Universities | 0 | - | 4.15 | 145,790 |
| Territories of the United States | 0 | - | 4.80 | 52,616 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,882 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 176,078 |
| U.S. States by Governor | 0 | - | 4.43 | 18,111 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,764 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,775 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,686 |
| New York City Geography | 0 | - | 4.43 | 33,185 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,725 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,671 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,274 |
| United States Country Quiz | 0 | - | 4.43 | 102,170 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,060 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,194 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 94,966 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,152 |
| American Legal Vocabulary | 0 | - | 4.40 | 34,017 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,469 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,609 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,373 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,624 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,960 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,770 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,483 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,415 |
| 75 Americans Named John | 0 | - | 4.41 | 23,971 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,111 |
| New England States | 0 | - | 4.51 | 59,893 |
| U.S. States by Land Area | 0 | - | 4.55 | 53,044 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,116 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,133 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,274 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,134 |
| U.S. States by Borders | 0 | - | 4.62 | 35,473 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 188,755 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,677 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,329 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,443 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,920 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,216 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,825 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,458 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,503 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,859 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,350 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,258 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,581 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 83,045 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,260 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 47,083 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,978 |
| Countries with NO Military | 0 | - | 4.97 | 63,366 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,266 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,843 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,078 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,087 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,636 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 58,726 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,261 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,823 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,454 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,976 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,264 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.44 | 70,554 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.74 | 64,202 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,570 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,834 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,186 |
| Flags of North and South America | 0 | - | 4.99 | 376,761 |
| Latin American Countries Map Quiz | 0 | - | 4.98 | 130,618 |
| South America Map Quiz | 0 | - | 5.00 | 1,556,410 |
| Belize Country Quiz | 0 | - | 4.85 | 21,080 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,299 |
| Largest United States Airlines | 0 | - | 4.39 | 55,152 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,967 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,686 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,908 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 56,241 |
| Events in U.S. History | 0 | - | 4.41 | 28,819 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,192 |
| The American Civil War | 0 | - | 4.62 | 52,621 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,860 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 77,024 |
| Countries with the Most Tanks | 0 | - | 4.91 | 108,251 |
| The Only American Country ... | 0 | - | 4.92 | 122,196 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,634 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,935 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,108 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,190 |
| Which Island in the United States? | 0 | - | 4.29 | 29,771 |
| American Foods | 0 | - | 3.66 | 39,436 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,327 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,718 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,288 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.27 | 14,818 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,444 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,980 |
| Old West History | 0 | - | 4.34 | 15,297 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,534 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,983 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,776 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 75,051 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,564 |
| Flyover States | 0 | - | 4.53 | 29,591 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,256 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,395 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,965 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,789 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,710 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,527 |
| US States with the Most Executions | 0 | - | 4.51 | 26,424 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,157 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,255 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,247 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,787 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,742 |
| Monarchies of Europe | 0 | - | 4.90 | 98,840 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,642 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,956 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,983 |
| Monarchies of Asia | 0 | - | 4.97 | 71,489 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,276 |
| Military History Vocabulary | 0 | - | 4.91 | 67,609 |
| Battle to Country | 0 | - | 4.91 | 53,935 |
| US States Quiz | 0 | - | 5.00 | 16,990,877 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,632 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,931 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,366 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,735 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,671 |
| Canada Country Quiz | 0 | - | 4.55 | 133,024 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,597 |
| Canada A-Z | 0 | - | 4.73 | 32,963 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,792 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,890 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 53,304 |
| History of Mexico | 0 | - | 4.52 | 15,362 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,475 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,775 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,556 |
| States of Brazil | 0 | - | 4.97 | 89,654 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,233 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 749,657 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,514 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 138,994 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 335,263 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,914 |
