| United States Map Quiz | 0 | - | 4.98 | 4,026,794 |
| U.S. State Border Crossings | 0 | - | 4.96 | 85,445 |
| U.S. Citizenship Test Questions | 0 | - | 4.84 | 229,461 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.86 | 69,500 |
| Cities and Towns of Massachusetts | 0 | - | 4.91 | 67,116 |
| Total United States Immigration by Country | 0 | - | 4.88 | 102,953 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.95 | 164,424 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.95 | 199,566 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 69,925 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.83 | 60,966 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 353,257 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.88 | 24,585 |
| Pixelated United States Map | 0 | - | 4.91 | 87,116 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 100,318 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 84,383 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 108,266 |
| U.S. States with the Letter Y | 0 | - | 4.84 | 103,180 |
| 10 Southernmost U.S. States | 0 | - | 4.87 | 105,513 |
| U.S. States with Short Names | 0 | - | 4.89 | 138,682 |
| U.S. States that Start with M | 0 | - | 4.92 | 176,419 |
| U.S. States By Population | 0 | - | 4.90 | 135,876 |
| U.S. States that Start with N | 0 | - | 4.94 | 162,793 |
| U.S. States with Longest Names | 0 | - | 4.87 | 39,722 |
| 10 Northernmost U.S. States | 0 | - | 4.89 | 78,089 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 82,529 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 60,881 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 60,124 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.94 | 152,308 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 172,602 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 118,411 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.83 | 66,167 |
| Top 10 Newest U.S. States | 0 | - | 4.83 | 82,232 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.83 | 61,065 |
| Countries of North America Quiz | 0 | - | 5.00 | 938,528 |
| Embarrassing Chapters in US History | 0 | - | 4.19 | 32,228 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 605,552 |
| Countries that Beat the United States | 0 | - | 4.92 | 155,935 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 95,251 |
| U.S. States with the Most Immigrants | 0 | - | 4.84 | 77,633 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 93,955 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 878,036 |
| North American Capitals - Map Quiz | 0 | - | 4.89 | 51,508 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 53,988 |
| Old West History | 0 | - | 4.30 | 14,988 |
| Life of Benjamin Franklin | 0 | - | 4.20 | 6,359 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,337 |
| Canada Provinces and Territories | 0 | - | 4.99 | 307,293 |
| States of Mexico | 0 | - | 4.93 | 154,900 |
| Mexico States Map Quiz | 0 | - | 4.82 | 96,673 |
| Central American Countries | 0 | - | 4.98 | 146,628 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 108,311 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 122,457 |
| Territories of the United States | 0 | - | 4.77 | 50,269 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.80 | 36,910 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 167,368 |
| Major non-NATO U.S. Allies | 0 | - | 4.46 | 40,302 |
| Events in U.S. History | 0 | - | 4.39 | 27,168 |
| U.S. State Nicknames Quiz | 0 | - | 4.49 | 48,067 |
| U.S. National Parks Quiz | 0 | - | 4.80 | 49,963 |
| Countries with American Expatriates | 0 | - | 4.55 | 41,655 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 39,230 |
| United States Country Quiz | 0 | - | 4.45 | 94,759 |
| Busiest Air Routes from the U.S. | 0 | - | 4.47 | 74,773 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.74 | 57,513 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,388,770 |
| Deadliest U.S. Wars | 0 | - | 4.84 | 165,146 |
| The Life of Thomas Edison | 0 | - | 4.03 | 4,751 |
| U.S. History Multiple Choice #2 | 0 | - | 4.36 | 24,480 |
| U.S. History Multiple Choice #1 | 0 | - | 4.29 | 21,692 |
| U.S. History Multiple Choice #3 | 0 | - | 4.40 | 23,993 |
| Valid Answer - U.S. History | 0 | - | 4.22 | 21,922 |
| U.S. History Multiple Choice #4 | 0 | - | 4.26 | 24,825 |
| Countries Closest to Canada | 0 | - | 4.90 | 190,624 |
| U.S. Federal Holidays | 0 | - | 4.30 | 97,499 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,163 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 57,598 |
| New England States | 0 | - | 4.52 | 53,096 |
| US States by Land Area | 0 | - | 4.62 | 50,325 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.52 | 37,132 |
| Add a Letter - Make a U.S. State | 0 | - | 4.73 | 79,315 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.71 | 53,255 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.77 | 38,881 |
| U.S. States by Borders | 0 | - | 4.59 | 33,573 |
| Save Americans by Guessing U.S. States | 0 | - | 4.56 | 165,748 |
| 10 Easternmost U.S. States | 0 | - | 4.55 | 54,536 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 84,851 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.49 | 42,155 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 96,786 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 72,998 |
| Top 10 Most Asian U.S. States | 0 | - | 4.79 | 72,455 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 79,937 |
| Top 10 Least Obese U.S. States | 0 | - | 4.74 | 71,479 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.47 | 72,525 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 50,403 |
| Top 10 Most White U.S. States | 0 | - | 4.52 | 76,523 |
| Top 10 Most German U.S. States | 0 | - | 4.49 | 56,620 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 38,833 |
| Countries that Beat Canada | 0 | - | 4.90 | 82,671 |
| History of Pennsylvania | 0 | - | 4.11 | 6,793 |
| History of Virginia | 0 | - | 4.34 | 11,271 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.75 | 55,155 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.75 | 53,928 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.64 | 43,737 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 66,868 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 34,933 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.62 | 47,990 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.54 | 32,433 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 31,791 |
| Georgia ... or Georgia? | 0 | - | 4.69 | 74,195 |
| Flags of North and South America Quiz | 0 | - | 4.99 | 330,329 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 116,260 |
| South America Map Quiz | 0 | - | 5.00 | 1,478,551 |
| Belize Country Quiz | 0 | - | 4.87 | 19,760 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 18,037 |
| Top U.S. Universities | 0 | - | 4.14 | 135,364 |
| Largest United States Airlines | 0 | - | 4.38 | 53,297 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 110,375 |
| U.S. States by Governor Quiz | 0 | - | 4.42 | 17,409 |
| U.S. Political Parties in History | 0 | - | 4.43 | 26,816 |
| U.S. Government Agencies | 0 | - | 4.43 | 18,531 |
| Florida Pro Sport Teams | 0 | - | 4.67 | 10,996 |
| Canada Immigration by Country | 0 | - | 4.51 | 59,586 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.93 | 58,041 |
| The Only American Country ... | 0 | - | 4.93 | 114,668 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 105,252 |
| Dominica Country Quiz | 0 | - | 4.82 | 18,719 |
| North America Capitals Quiz | 0 | - | 4.99 | 199,651 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.09 | 26,468 |
| American Islands | 0 | - | 4.18 | 16,060 |
| American Inventions #1 | 0 | - | 3.65 | 31,198 |
| American Inventions #2 | 0 | - | 3.91 | 15,584 |
| American Foods | 0 | - | 3.73 | 38,630 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 5,890 |
| American Legal Vocabulary | 0 | - | 4.40 | 32,916 |
| U.S. Cities by Picture #1 | 0 | - | 4.37 | 33,019 |
| Cities by Picture #2 | 0 | - | 4.22 | 33,641 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.23 | 14,114 |
| U.S. Groups of Four Quiz | 0 | - | 4.38 | 24,242 |
| U.S. Groups of Three Quiz | 0 | - | 4.06 | 20,163 |
| Countries Closest to the U. S. | 0 | - | 4.40 | 202,087 |
| American Geography Quiz for Dummies | 0 | - | 4.36 | 55,154 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 41,022 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 408,151 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 366,814 |
| New York City Geography | 0 | - | 4.38 | 23,785 |
| People on Money - United States | 0 | - | 4.32 | 62,480 |
| U.S. History Groups of Two | 0 | - | 4.22 | 43,031 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.34 | 72,744 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.50 | 21,025 |
| Flyover States | 0 | - | 4.51 | 28,677 |
| U.S. States With Double Letters | 0 | - | 4.64 | 22,396 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 73,612 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.38 | 124,032 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.46 | 28,629 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.65 | 31,295 |
| U.S. States with Oldest Median Age | 0 | - | 4.32 | 36,183 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.29 | 42,699 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.39 | 70,561 |
| US States with the Most Executions | 0 | - | 4.51 | 26,007 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 27,926 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 44,485 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 23,095 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 140,958 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 68,793 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.94 | 55,877 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 64,203 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 50,932 |
| Name a Valid U.S. President #1 | 0 | - | 4.91 | 177,475 |
| Play-Doh Presidents | 0 | - | 5.00 | 78,189 |
| US States Quiz | 0 | - | 5.00 | 15,637,355 |
| U.S. States with the Lowest HDI | 0 | - | 4.46 | 28,120 |
| Which U.S. State - Multiple Choice | 0 | - | 4.47 | 19,623 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 40,898 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.49 | 44,713 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.40 | 51,568 |
| Canada Country Quiz | 0 | - | 4.53 | 126,210 |
| Canada Cities Map Quiz | 0 | - | 4.53 | 112,514 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 99,233 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 86,036 |
| American Countries With No Atlantic Coastline | 0 | - | 4.91 | 76,076 |
| History of Mexico | 0 | - | 4.57 | 14,610 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 99,190 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.89 | 45,742 |
| Brazil States Map Quiz | 0 | - | 4.84 | 43,500 |
| States of Brazil | 0 | - | 4.97 | 76,615 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.05 | 18,826 |
| U.S. States by Picture #1 | 0 | - | 4.17 | 14,821 |
| Most-Visited U.S. Cities | 0 | - | 4.86 | 81,565 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 68,978 |
| Senators Who Ran For President | 0 | - | 4.28 | 16,622 |
| U.S. Electoral College Landslides | 0 | - | 4.32 | 21,444 |
| California Multiple Choice | 0 | - | 4.40 | 27,478 |
| Geography of California | 0 | - | 4.23 | 10,075 |
| California Pro Sport Teams | 0 | - | 4.23 | 22,357 |
| San Francisco Trivia | 0 | - | 4.35 | 15,403 |
| San Francisco A-Z | 0 | - | 4.22 | 9,261 |
| Florida Multiple Choice | 0 | - | 4.33 | 9,936 |
| Chicago City Trivia | 0 | - | 4.27 | 30,871 |
| Boston Trivia | 0 | - | 4.38 | 23,756 |
| Boston Talk to English Translation Quiz | 0 | - | 4.47 | 14,707 |
