| United States Map Quiz | 0 | - | 4.98 | 4,150,522 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,289 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,001 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,261 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,599 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,749 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,675 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,194 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,990 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,735 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,745 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 65,989 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,359 |
| Pixelated United States Map | 0 | - | 4.87 | 93,948 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,173 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,392 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,509 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,037 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,053 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,548 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,783 |
| U.S. States By Population | 0 | - | 4.92 | 152,897 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,045 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,244 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,291 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,050 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,046 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,374 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,671 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,450 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,965 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,380 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,049 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,291 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,018,880 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,066 |
| Canada Provinces and Territories | 0 | - | 5.00 | 340,554 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 638,486 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,353 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,505 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,271 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,262 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,696 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,192 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,565 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,660 |
| Old West History | 0 | - | 4.33 | 15,250 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,513 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,902 |
| States of Mexico | 0 | - | 4.95 | 175,171 |
| Mexico States Map Quiz | 0 | - | 4.85 | 104,329 |
| Central American Countries | 0 | - | 4.98 | 155,719 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 147,300 |
| Territories of the United States | 0 | - | 4.79 | 52,295 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,536 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,121 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,017 |
| New York City Geography | 0 | - | 4.42 | 33,040 |
| Events in U.S. History | 0 | - | 4.40 | 28,592 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,426 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,537 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,148 |
| United States Country Quiz | 0 | - | 4.43 | 101,191 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,791 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,842 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,681,517 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,288 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 25,038 |
| U.S. History Multiple Choice #1 | 0 | - | 4.31 | 22,214 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,502 |
| U.S. History Multiple Choice #4 | 0 | - | 4.26 | 25,549 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,223 |
| Countries Closest to Canada | 0 | - | 4.91 | 197,881 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,534 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,394 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,687 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,658 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,983 |
| 75 Americans Named John | 0 | - | 4.41 | 23,877 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,790 |
| New England States | 0 | - | 4.51 | 59,768 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,701 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,966 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,619 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 55,882 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,828 |
| U.S. States by Borders | 0 | - | 4.61 | 35,233 |
| Save Americans by Guessing U.S. States | 0 | - | 4.63 | 184,612 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,391 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,893 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,116 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,518 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.72 | 32,938 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,541 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,077 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,313 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,592 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,685 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,657 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,318 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,289 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,843 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 46,658 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,200 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,178 |
| History of Pennsylvania | 0 | - | 4.16 | 7,118 |
| History of Virginia | 0 | - | 4.31 | 11,578 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,407 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,132 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.67 | 45,062 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,842 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,107 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.42 | 59,282 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.73 | 63,747 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,449 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,718 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,628 |
| Flags of North and South America | 0 | - | 4.99 | 371,081 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,082 |
| South America Map Quiz | 0 | - | 5.00 | 1,545,977 |
| Belize Country Quiz | 0 | - | 4.85 | 20,905 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,153 |
| Top U.S. Universities | 0 | - | 4.15 | 144,661 |
| Largest United States Airlines | 0 | - | 4.39 | 54,952 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,598 |
| U.S. States by Governor | 0 | - | 4.43 | 18,028 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,637 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,624 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,808 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 55,870 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,456 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,556 |
| The Only American Country ... | 0 | - | 4.92 | 121,285 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,829 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,773 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,658 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,091 |
| Which Island in the United States? | 0 | - | 4.29 | 29,372 |
| American Inventions #1 | 0 | - | 3.63 | 31,493 |
| American Inventions #2 | 0 | - | 3.93 | 15,853 |
| American Foods | 0 | - | 3.66 | 39,341 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,123 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,203 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,862 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,470 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,049 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,709 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,273 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,855 |
| Branches of the U.S. Military | 0 | - | 4.39 | 24,289 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,303 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,433 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,692 |
| People on Money - United States | 0 | - | 4.31 | 63,296 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,366 |
| The Life of Thomas Edison | 0 | - | 3.95 | 4,912 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,749 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,501 |
| Flyover States | 0 | - | 4.52 | 29,462 |
| U.S. States With Double Letters | 0 | - | 4.54 | 24,048 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 76,028 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,206 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,657 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,494 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,300 |
| US States with the Most Executions | 0 | - | 4.51 | 26,379 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,014 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,858 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,089 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,700 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,986 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,120 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,594 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,483 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,621 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,003 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,034 |
| US States Quiz | 0 | - | 5.00 | 16,805,532 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,534 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,827 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,258 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,622 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,443 |
| Canada Country Quiz | 0 | - | 4.54 | 132,210 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,985 |
| Canada A-Z | 0 | - | 4.73 | 32,748 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,475 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,586 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,242 |
| History of Mexico | 0 | - | 4.58 | 15,286 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,683 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,502 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,753 |
| States of Brazil | 0 | - | 4.97 | 87,351 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,180 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,405 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 330,450 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 93,253 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,390 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,026 |
