| United States Map Quiz | 0 | - | 4.98 | 4,147,980 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,195 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,804 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,153 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,432 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,680 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,109 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,095 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,548 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,009 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,733 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,186 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,676 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 65,890 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,686 |
| Pixelated United States Map | 0 | - | 4.89 | 93,801 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,972 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,223 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,328 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,904 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,902 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,330 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,564 |
| U.S. States By Population | 0 | - | 4.92 | 152,769 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,869 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,157 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,189 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,936 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,972 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,243 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,515 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,366 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,851 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,316 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,970 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,189 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,016,948 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,112 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,045 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,391 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,191 |
| Canada Provinces and Territories | 0 | - | 5.00 | 339,762 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 637,755 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,707 |
| Three Real and One Fake - U.S. History | 0 | - | 4.33 | 25,724 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 25,026 |
| U.S. History Multiple Choice #1 | 0 | - | 4.31 | 22,196 |
| U.S. History Multiple Choice #4 | 0 | - | 4.26 | 25,534 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,522 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,352 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,455 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,117 |
| Old West History | 0 | - | 4.33 | 15,240 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,508 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,890 |
| Canada True or False? | 0 | - | 4.57 | 54,733 |
| States of Mexico | 0 | - | 4.95 | 174,602 |
| Mexico States Map Quiz | 0 | - | 4.84 | 104,165 |
| Central American Countries | 0 | - | 4.98 | 155,496 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 146,771 |
| Territories of the United States | 0 | - | 4.79 | 52,248 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,482 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,961 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,934 |
| New York City Geography | 0 | - | 4.42 | 33,020 |
| Events in U.S. History | 0 | - | 4.40 | 28,568 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,384 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,516 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,123 |
| United States Country Quiz | 0 | - | 4.43 | 101,010 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,721 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,257 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,673,119 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,744 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,488 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,172 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,709 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,784 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,426 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,913 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,723 |
| New England States | 0 | - | 4.51 | 59,755 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,625 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,945 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,551 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 55,811 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,786 |
| U.S. States by Borders | 0 | - | 4.63 | 35,188 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 183,831 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,241 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,358 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,808 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,079 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,454 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.70 | 32,893 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,507 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,013 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,281 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,545 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,568 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,561 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,265 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,166 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,772 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.42 | 46,137 |
| Ten Most Rectangular U.S. States | 0 | - | 4.54 | 71,114 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,109 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,360 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,677 |
| 75 Americans Named John | 0 | - | 4.41 | 23,858 |
| California Multiple Choice | 0 | - | 4.40 | 28,065 |
| Florida Multiple Choice | 0 | - | 4.33 | 10,170 |
| History of Pennsylvania | 0 | - | 4.16 | 7,109 |
| History of Virginia | 0 | - | 4.31 | 11,573 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,579 |
| Flags of North and South America | 0 | - | 4.99 | 370,007 |
| South America Map Quiz | 0 | - | 5.00 | 1,544,343 |
| Belize Country Quiz | 0 | - | 4.85 | 20,874 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,111 |
| Top U.S. Universities | 0 | - | 4.15 | 144,498 |
| Largest United States Airlines | 0 | - | 4.39 | 54,917 |
| U.S. States by Governor | 0 | - | 4.43 | 18,012 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,619 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,603 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,934 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,787 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 55,823 |
| North Carolina... or South Carolina? | 0 | - | 4.21 | 10,501 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,361 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,103 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.67 | 45,030 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,816 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,080 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.42 | 59,207 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.73 | 63,686 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,435 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,702 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 42,746 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,785 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,740 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,529 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,840 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,432 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,008 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,334 |
| Washington... or Washington D.C.? | 0 | - | 4.33 | 26,483 |
| People on Money - United States | 0 | - | 4.31 | 63,260 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,334 |
| The Life of Thomas Edison | 0 | - | 3.95 | 4,907 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,714 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,492 |
| Flyover States | 0 | - | 4.52 | 29,445 |
| U.S. States With Double Letters | 0 | - | 4.54 | 24,012 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 75,964 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,150 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.44 | 29,628 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,452 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,255 |
| US States with the Most Executions | 0 | - | 4.51 | 26,368 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 28,981 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,401 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,784 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,073 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,364 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,264 |
| The Only American Country ... | 0 | - | 4.92 | 121,154 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,716 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,531 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,131 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,078 |
| Which Island in the United States? | 0 | - | 4.29 | 29,319 |
| American Inventions #1 | 0 | - | 3.63 | 31,482 |
| American Inventions #2 | 0 | - | 3.93 | 15,844 |
| American Foods | 0 | - | 3.66 | 39,323 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,119 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.94 | 32,156 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,698 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,251 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,842 |
| U.S. Analogies | 0 | - | 4.27 | 19,637 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,249 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,667 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,928 |
| US States Quiz | 0 | - | 5.00 | 16,775,300 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,518 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,811 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,610 |
| Canada Country Quiz | 0 | - | 4.54 | 132,062 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,861 |
| Canada A-Z | 0 | - | 4.73 | 32,717 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,503 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,834 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,932 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,473 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,350 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,292 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,955 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,185 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,771 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,442 |
