| U.S. Cabinet Departments | 0 | - | 4.86 | 70,653 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 183,583 |
| US States Quiz | 0 | - | 5.00 | 15,886,341 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 356,162 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 117,371 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 119,325 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.81 | 59,767 |
| U.S. National Parks Quiz | 0 | - | 4.81 | 51,026 |
| Total United States Immigration by Country | 0 | - | 4.89 | 104,594 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.95 | 166,636 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.95 | 202,254 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.83 | 62,011 |
| Pixelated United States Map | 0 | - | 4.89 | 88,870 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 102,036 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 85,769 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 110,504 |
| U.S. States with the Letter Y | 0 | - | 4.84 | 105,031 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 107,203 |
| U.S. States with Short Names | 0 | - | 4.90 | 140,874 |
| U.S. States that Start with M | 0 | - | 4.92 | 178,578 |
| U.S. States By Population | 0 | - | 4.90 | 137,269 |
| U.S. States that Start with N | 0 | - | 4.94 | 164,710 |
| U.S. States with Longest Names | 0 | - | 4.86 | 40,744 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 83,710 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 61,543 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 61,146 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 37,224 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.96 | 307,573 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 140,321 |
| Countries that Beat the United States | 0 | - | 4.93 | 158,216 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 42,378 |
| US States with an Empty Map | 0 | - | 5.00 | 593,696 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 96,479 |
| U.S. States with the Most Immigrants | 0 | - | 4.84 | 78,544 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 87,987 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 124,850 |
| U.S. Geography by Letter - B | 0 | - | 4.51 | 63,581 |
| U.S. Geography by Letter - S | 0 | - | 4.53 | 48,582 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 725,448 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 198,082 |
| Top 10 Most Native American U.S. States | 0 | - | 4.85 | 86,370 |
| U.S. Citizenship Test Questions | 0 | - | 4.84 | 231,965 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 87,262 |
| States of Mexico | 0 | - | 4.93 | 158,247 |
| Mexico States Map Quiz | 0 | - | 4.81 | 98,076 |
| Top U.S. Universities | 0 | - | 4.14 | 137,412 |
| U.S. States by Governor Quiz | 0 | - | 4.42 | 17,534 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,015 |
| U.S. Government Agencies | 0 | - | 4.44 | 18,807 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.89 | 73,554 |
| U.S. Geography by Letter - C | 0 | - | 4.21 | 62,760 |
| U.S. Geography by Letter - A | 0 | - | 4.33 | 57,714 |
| U.S. Geography by Letter - D | 0 | - | 4.03 | 46,563 |
| U.S. Geography by Letter - T | 0 | - | 4.27 | 45,694 |
| U.S. Geography by Letter - P | 0 | - | 4.32 | 43,716 |
| U.S. Geography by Letter - M | 0 | - | 4.19 | 42,866 |
| U.S. State Nicknames Quiz | 0 | - | 4.49 | 48,582 |
| Countries with American Expatriates | 0 | - | 4.55 | 41,867 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 39,415 |
| United States Country Quiz | 0 | - | 4.45 | 96,043 |
| Busiest Air Routes from the U.S. | 0 | - | 4.47 | 75,227 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 41,320 |
| People on Money - United States | 0 | - | 4.32 | 62,637 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.19 | 43,465 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 62,877 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.78 | 61,526 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 40,736 |
| Countries Closest to Canada | 0 | - | 4.90 | 192,134 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.74 | 58,025 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 99,107 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 78,468 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 58,067 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 66,229 |
| New England States | 0 | - | 4.51 | 59,085 |
| US States by Land Area | 0 | - | 4.63 | 50,877 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,319 |
| Add a Letter - Make a U.S. State | 0 | - | 4.71 | 80,063 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 53,825 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.78 | 39,320 |
| U.S. States by Borders | 0 | - | 4.61 | 33,966 |
| 10 Easternmost U.S. States | 0 | - | 4.55 | 54,911 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 85,448 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 42,629 |
| Famous Canadians by Picture | 0 | - | 4.42 | 46,970 |
| Asian Last Names in the United States | 0 | - | 4.43 | 45,314 |
| United States Map Quiz | 0 | - | 4.98 | 4,056,565 |
| Senators Who Ran For President | 0 | - | 4.28 | 16,725 |
| U.S. Electoral College Landslides | 0 | - | 4.33 | 21,595 |
| Georgia ... or Georgia? | 0 | - | 4.69 | 74,694 |
| Flags of North and South America Quiz | 0 | - | 4.99 | 335,577 |
| U.S. Geography by Letter - N | 0 | - | 3.77 | 42,633 |
| U.S. Geography by Letter - E | 0 | - | 3.72 | 38,957 |
| U.S. Geography by Letter - F | 0 | - | 3.78 | 34,917 |
| U.S. Geography by Letter - G | 0 | - | 4.04 | 29,188 |
| U.S. Geography by Letter - R | 0 | - | 4.14 | 27,140 |
| U.S. Geography By Letter - H | 0 | - | 4.31 | 28,574 |
| Belize Country Quiz | 0 | - | 4.87 | 19,995 |
| Largest United States Airlines | 0 | - | 4.38 | 53,578 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.34 | 8,155 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 35,962 |
| Countries Closest to United States A-Z | 0 | - | 4.83 | 113,158 |
| Biggest Trading Partners - US | 0 | - | 4.63 | 104,593 |
| Florida Pro Sport Teams | 0 | - | 4.68 | 11,174 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 51,222 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.64 | 63,298 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.74 | 55,430 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 54,197 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.44 | 48,785 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 32,027 |
| Name a Valid U.S. State #2 | 0 | - | 4.62 | 73,871 |
| U.S. States with the Longest International Borders | 0 | - | 4.77 | 44,536 |
| Longest U.S. State Borders | 0 | - | 4.64 | 37,307 |
| U.S. State Superlatives #1 | 0 | - | 4.46 | 77,234 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 38,766 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,122 |
| Top 10 Least Religious U.S. States | 0 | - | 4.50 | 33,001 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 37,774 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,134 |
| U.S. States with the Fewest Borders | 0 | - | 4.77 | 110,337 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 61,807 |
| Native American Words | 0 | - | 4.25 | 24,355 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 111,281 |
| U.S. Cities by Picture #1 | 0 | - | 4.37 | 33,350 |
| Cities by Picture #2 | 0 | - | 4.18 | 33,992 |
| Major non-NATO U.S. Allies | 0 | - | 4.50 | 49,309 |
| Countries Closest to the U. S. | 0 | - | 4.40 | 202,909 |
| Famous People from California by Picture | 0 | - | 4.29 | 34,520 |
| California Groups of Things | 0 | - | 4.24 | 44,401 |
| Hawaiian Islands Map Quiz | 0 | - | 4.75 | 21,829 |
| New York Groups of Things | 0 | - | 4.36 | 58,965 |
| Famous People from Texas by Picture | 0 | - | 4.03 | 32,666 |
| U.S. History Groups of Two | 0 | - | 4.22 | 43,304 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 73,173 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.50 | 21,115 |
| Flyover States | 0 | - | 4.52 | 28,837 |
| U.S. States With Double Letters | 0 | - | 4.65 | 22,748 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.26 | 74,124 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 38,516 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 36,356 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 124,978 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.48 | 115,950 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.49 | 45,038 |
| Words for Leaders | 0 | - | 4.78 | 245,987 |
| The Only American Country ... | 0 | - | 4.92 | 115,933 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 106,507 |
| U.S. State Border Crossings | 0 | - | 4.96 | 86,710 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.87 | 70,983 |
| Cities and Towns of Massachusetts | 0 | - | 4.90 | 68,626 |
| Who Did that Motown Song | 0 | - | 4.46 | 12,885 |
| Regions of US States | 0 | - | 4.16 | 32,198 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,105 |
| U.S. States with the Lowest HDI | 0 | - | 4.46 | 28,268 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 19,769 |
| Movies by State Quiz | 0 | - | 4.24 | 40,022 |
| U.S. States with the Fewest Traffic Fatalities | 0 | - | 4.21 | 20,479 |
| U.S. States with the Most Traffic Fatalities | 0 | - | 4.08 | 18,551 |
| Canada Country Quiz | 0 | - | 4.53 | 127,494 |
| Canada Cities Map Quiz | 0 | - | 4.69 | 119,616 |
| Canada A-Z | 0 | - | 4.70 | 31,792 |
| Catholic Countries in Europe | 0 | - | 4.83 | 90,013 |
| Monarchies of Europe | 0 | - | 4.89 | 93,320 |
| European Geography By Letter - B #2 | 0 | - | 4.81 | 65,745 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 64,034 |
| Monarchies of Asia | 0 | - | 4.96 | 68,199 |
| Military History Vocabulary | 0 | - | 4.91 | 64,119 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 86,620 |
| U.S. Geography by Letter - O | 0 | - | 3.40 | 31,189 |
| U.S. Geography by Letter - L | 0 | - | 3.99 | 31,213 |
| U.S. Geography by Letter - W | 0 | - | 3.81 | 20,392 |
| Mexico Country Quiz | 0 | - | 4.48 | 69,656 |
| Mexico Cities Map Quiz | 0 | - | 4.75 | 32,279 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.90 | 47,107 |
| Brazil States Map Quiz | 0 | - | 4.84 | 44,242 |
| States of Brazil | 0 | - | 4.98 | 78,551 |
| Chile Country Quiz | 0 | - | 4.81 | 38,096 |
| Colombia Country Quiz | 0 | - | 4.90 | 38,302 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 41,676 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.83 | 57,914 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.06 | 18,921 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 152,603 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 75,281 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 35,339 |
| U.S. States by Picture #1 | 0 | - | 4.17 | 14,939 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.54 | 134,826 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.20 | 51,808 |
| Most-Visited U.S. Cities | 0 | - | 4.88 | 83,913 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.88 | 108,463 |
| Every U.S. Metro Area on a Map | 0 | - | 4.96 | 70,575 |
| Politicians with Other Careers Quiz | 0 | - | 3.98 | 14,799 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.13 | 25,675 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,149 |
| Children of U.S. Presidents | 0 | - | 3.95 | 16,480 |
| Main Parts of the U.S. Budget | 0 | - | 3.49 | 8,441 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.19 | 10,516 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,453,570 |
| America the Beautiful Lyrics | 0 | - | 4.27 | 19,505 |
| American Founding Fathers | 0 | - | 4.37 | 22,704 |
| Famous People from Alabama by Picture | 0 | - | 4.06 | 23,459 |
| Geography of California | 0 | - | 4.23 | 10,163 |
| California Pro Sport Teams | 0 | - | 4.23 | 22,439 |
