| United States Map Quiz | 0 | - | 4.98 | 4,055,794 |
| U.S. History Multiple Choice #3 | 0 | - | 4.42 | 24,144 |
| U.S. State Border Crossings | 0 | - | 4.96 | 86,694 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 231,915 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.87 | 70,951 |
| Cities and Towns of Massachusetts | 0 | - | 4.90 | 68,599 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 94,834 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 356,077 |
| U.S. National Parks Quiz | 0 | - | 4.81 | 50,992 |
| Total United States Immigration by Country | 0 | - | 4.89 | 104,559 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.95 | 166,581 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.95 | 202,192 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 70,642 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.83 | 61,980 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.89 | 25,357 |
| Pixelated United States Map | 0 | - | 4.89 | 88,827 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 101,998 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 85,722 |
| U.S. History Multiple Choice #1 | 0 | - | 4.29 | 21,792 |
| U.S. History Multiple Choice #4 | 0 | - | 4.26 | 24,962 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 110,434 |
| U.S. States with the Letter Y | 0 | - | 4.84 | 104,988 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 107,157 |
| U.S. States with Short Names | 0 | - | 4.90 | 140,810 |
| U.S. States that Start with M | 0 | - | 4.92 | 178,509 |
| U.S. States By Population | 0 | - | 4.90 | 137,236 |
| U.S. States that Start with N | 0 | - | 4.94 | 164,662 |
| U.S. States with Longest Names | 0 | - | 4.86 | 40,708 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 79,122 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 83,674 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 61,522 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 61,112 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.94 | 153,861 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 173,703 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 120,369 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.83 | 66,998 |
| Top 10 Newest U.S. States | 0 | - | 4.84 | 83,149 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 63,448 |
| U.S. History Multiple Choice #5 | 0 | - | 4.32 | 11,129 |
| Countries of North America Quiz | 0 | - | 5.00 | 955,138 |
| Countries that Beat the United States | 0 | - | 4.93 | 158,151 |
| Embarrassing Chapters in US History | 0 | - | 4.19 | 32,431 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 96,447 |
| U.S. States with the Most Immigrants | 0 | - | 4.84 | 78,516 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 610,974 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 883,364 |
| Three Real and One Fake - U.S. History | 0 | - | 4.32 | 25,223 |
| North American Capitals - Map Quiz | 0 | - | 4.89 | 52,576 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 55,607 |
| Red State or Blue State Trait? | 0 | - | 4.45 | 52,525 |
| Old West History | 0 | - | 4.30 | 15,035 |
| Life of Benjamin Franklin | 0 | - | 4.22 | 6,388 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,483 |
| Canada Provinces and Territories | 0 | - | 5.00 | 312,196 |
| States of Mexico | 0 | - | 4.93 | 158,174 |
| Mexico States Map Quiz | 0 | - | 4.81 | 98,020 |
| Central American Countries | 0 | - | 4.98 | 148,298 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 109,175 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 123,871 |
| Territories of the United States | 0 | - | 4.78 | 50,787 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.77 | 37,502 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 168,980 |
| Major non-NATO U.S. Allies | 0 | - | 4.50 | 49,273 |
| Events in U.S. History | 0 | - | 4.39 | 27,446 |
| U.S. State Nicknames Quiz | 0 | - | 4.49 | 48,519 |
| Countries with American Expatriates | 0 | - | 4.55 | 41,860 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 39,409 |
| United States Country Quiz | 0 | - | 4.45 | 96,006 |
| Busiest Air Routes from the U.S. | 0 | - | 4.47 | 75,209 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 41,311 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,451,714 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 183,538 |
| The Life of Thomas Edison | 0 | - | 4.03 | 4,781 |
| Valid Answer - U.S. History | 0 | - | 4.22 | 22,032 |
| Countries Closest to Canada | 0 | - | 4.90 | 192,096 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.74 | 58,013 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 58,049 |
| New England States | 0 | - | 4.51 | 59,074 |
| US States by Land Area | 0 | - | 4.63 | 50,857 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,311 |
| Add a Letter - Make a U.S. State | 0 | - | 4.71 | 80,038 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 53,796 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.78 | 39,306 |
| U.S. States by Borders | 0 | - | 4.61 | 33,959 |
| Save Americans by Guessing U.S. States | 0 | - | 4.53 | 169,613 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 19,762 |
| 10 Easternmost U.S. States | 0 | - | 4.55 | 54,903 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 85,425 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 42,619 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 97,315 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 73,326 |
| Top 10 Most Asian U.S. States | 0 | - | 4.79 | 73,285 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 80,275 |
| Top 10 Least Obese U.S. States | 0 | - | 4.76 | 71,982 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.47 | 81,376 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.44 | 50,826 |
| Top 10 Most White U.S. States | 0 | - | 4.50 | 78,265 |
| Top 10 Most German U.S. States | 0 | - | 4.49 | 57,415 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 39,132 |
| Ten Most Rectangular U.S. States | 0 | - | 4.52 | 59,536 |
| Countries that Beat Canada | 0 | - | 4.90 | 83,734 |
| U.S. Federal Holidays | 0 | - | 4.30 | 97,889 |
| Branches of the U.S. Military | 0 | - | 4.41 | 22,986 |
| California Multiple Choice | 0 | - | 4.40 | 27,597 |
| Florida Multiple Choice | 0 | - | 4.33 | 9,990 |
| History of Pennsylvania | 0 | - | 4.14 | 6,867 |
| History of Virginia | 0 | - | 4.34 | 11,332 |
| Georgia ... or Georgia? | 0 | - | 4.69 | 74,681 |
| Flags of North and South America Quiz | 0 | - | 4.99 | 335,440 |
| South America Map Quiz | 0 | - | 5.00 | 1,493,019 |
| Belize Country Quiz | 0 | - | 4.87 | 19,989 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 18,250 |
| Top U.S. Universities | 0 | - | 4.14 | 137,353 |
| Largest United States Airlines | 0 | - | 4.38 | 53,563 |
| U.S. States by Governor Quiz | 0 | - | 4.42 | 17,533 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,008 |
| U.S. Government Agencies | 0 | - | 4.44 | 18,797 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 411,711 |
| Florida Pro Sport Teams | 0 | - | 4.68 | 11,153 |
| North Carolina... or South Carolina? | 0 | - | 4.18 | 10,201 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.74 | 55,421 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 54,191 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.64 | 44,006 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,115 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 35,222 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.61 | 48,229 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 37,764 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,127 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 119,666 |
| Dominica Country Quiz | 0 | - | 4.82 | 18,928 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 111,257 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,097 |
| U.S. Cities by Picture #1 | 0 | - | 4.37 | 33,343 |
| Cities by Picture #2 | 0 | - | 4.18 | 33,980 |
| Countries Closest to the U. S. | 0 | - | 4.40 | 202,888 |
| American Geography Quiz for Dummies | 0 | - | 4.36 | 55,629 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 369,893 |
| Washington... or Washington D.C.? | 0 | - | 4.33 | 25,971 |
| People on Money - United States | 0 | - | 4.32 | 62,632 |
| U.S. History Groups of Two | 0 | - | 4.22 | 43,292 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 73,160 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.50 | 21,113 |
| Flyover States | 0 | - | 4.52 | 28,835 |
| U.S. States With Double Letters | 0 | - | 4.65 | 22,732 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.26 | 74,107 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 124,961 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.46 | 28,848 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.65 | 31,616 |
| U.S. States with Oldest Median Age | 0 | - | 4.32 | 41,063 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.30 | 43,047 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.40 | 71,420 |
| US States with the Most Executions | 0 | - | 4.51 | 26,085 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 28,148 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.49 | 45,027 |
| Top 10 Least White U.S. States | 0 | - | 4.19 | 45,333 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 23,279 |
| Canada Immigration by Country | 0 | - | 4.51 | 60,160 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.94 | 60,286 |
| The Only American Country ... | 0 | - | 4.92 | 115,902 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 106,475 |
| North America Capitals Quiz | 0 | - | 4.99 | 203,198 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.09 | 26,589 |
| Which Island in the United States? | 0 | - | 4.19 | 19,217 |
| American Inventions #1 | 0 | - | 3.65 | 31,258 |
| American Inventions #2 | 0 | - | 3.91 | 15,641 |
| American Foods | 0 | - | 3.69 | 38,764 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 5,935 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.25 | 14,226 |
| U.S. Groups of Four Quiz | 0 | - | 4.38 | 24,469 |
| U.S. Groups of Three Quiz | 0 | - | 4.06 | 20,333 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.37 | 14,236 |
| 75 Americans Named John | 0 | - | 4.39 | 23,402 |
| U.S. Analogies | 0 | - | 4.23 | 19,301 |
| Name a Valid U.S. President #1 | 0 | - | 4.90 | 180,797 |
| Play-Doh Presidents | 0 | - | 5.00 | 79,082 |
| New York City Geography | 0 | - | 4.38 | 23,894 |
| US States Quiz | 0 | - | 5.00 | 15,879,137 |
| U.S. States with the Lowest HDI | 0 | - | 4.46 | 28,264 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,049 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.40 | 51,953 |
| Canada Country Quiz | 0 | - | 4.53 | 127,466 |
| Canada Cities Map Quiz | 0 | - | 4.69 | 119,505 |
| Canada A-Z | 0 | - | 4.70 | 31,783 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 142,732 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 70,342 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.94 | 57,605 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 65,621 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 52,157 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 100,752 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 78,285 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 86,609 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.89 | 73,523 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 87,222 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 89,496 |
| History of Mexico | 0 | - | 4.58 | 14,757 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 100,370 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.90 | 47,070 |
| Brazil States Map Quiz | 0 | - | 4.84 | 44,219 |
| States of Brazil | 0 | - | 4.98 | 78,509 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.06 | 18,918 |
