| U.S. Cabinet Departments | 0 | - | 4.85 | 67,679 |
| U.S. Federal Agency Acronyms | 0 | - | 4.51 | 75,936 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 158,312 |
| U.S. States by Governor Quiz | 0 | - | 4.42 | 16,959 |
| U.S. Political Parties in History | 0 | - | 4.42 | 26,184 |
| U.S. Government Agencies | 0 | - | 4.41 | 17,694 |
| US States Quiz | 0 | - | 5.00 | 14,769,171 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 340,428 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 100,350 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 100,854 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 57,146 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 54,888 |
| Total United States Immigration by Country | 0 | - | 4.89 | 96,870 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 147,192 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.94 | 185,355 |
| Pixelated United States Map | 0 | - | 4.90 | 82,338 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 93,518 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 78,836 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 100,677 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 96,303 |
| 10 Southernmost U.S. States | 0 | - | 4.84 | 99,344 |
| U.S. States with Short Names | 0 | - | 4.87 | 129,887 |
| U.S. States that Start with M | 0 | - | 4.91 | 150,612 |
| U.S. States By Population | 0 | - | 4.90 | 130,069 |
| U.S. States that Start with N | 0 | - | 4.95 | 155,675 |
| U.S. States with Longest Names | 0 | - | 4.84 | 36,105 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 77,948 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 58,421 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 56,184 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 35,055 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.96 | 274,652 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 124,608 |
| Countries that Beat the United States | 0 | - | 4.92 | 145,893 |
| Louisiana Purchase with a Map | 0 | - | 4.95 | 36,306 |
| US States with an Empty Map | 0 | - | 5.00 | 554,996 |
| U.S. States with the Longest International Borders | 0 | - | 4.81 | 40,944 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.89 | 89,622 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 73,282 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 71,398 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 116,237 |
| Senators Who Ran For President | 0 | - | 4.28 | 16,309 |
| U.S. Electoral College Landslides | 0 | - | 4.33 | 21,014 |
| Hawaiian Islands Map Quiz | 0 | - | 4.88 | 21,041 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.11 | 25,100 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.08 | 14,773 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.17 | 10,117 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 185,016 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 71,397 |
| Canadian Prime Ministers Quiz | 0 | - | 4.64 | 49,736 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 222,294 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 81,525 |
| States of Mexico | 0 | - | 4.95 | 141,637 |
| Mexico States Map Quiz | 0 | - | 4.84 | 90,716 |
| Top U.S. Universities | 0 | - | 4.12 | 113,177 |
| Georgia ... or Georgia? | 0 | - | 4.79 | 71,988 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.88 | 68,367 |
| U.S. State Nicknames Quiz | 0 | - | 4.49 | 46,214 |
| U.S. National Parks Quiz | 0 | - | 4.79 | 46,810 |
| Countries with American Expatriates | 0 | - | 4.58 | 40,946 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 38,351 |
| United States Country Quiz | 0 | - | 4.45 | 89,286 |
| Busiest Air Routes from the U.S. | 0 | - | 4.47 | 72,518 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.52 | 34,055 |
| Biggest Trading Partners - US | 0 | - | 4.63 | 101,621 |
| Politicians with Other Careers Quiz | 0 | - | 3.94 | 14,573 |
| Main Parts of the U.S. Budget | 0 | - | 3.55 | 8,166 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,177,032 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.77 | 57,127 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 41,315 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.44 | 47,714 |
| U.S. State Superlatives #1 | 0 | - | 4.46 | 75,534 |
| U.S. State Superlatives #2 | 0 | - | 4.51 | 37,353 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.54 | 60,656 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.79 | 58,576 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.45 | 39,408 |
| Countries Closest to Canada | 0 | - | 4.90 | 184,639 |
| Asian Last Names in the United States | 0 | - | 4.41 | 43,321 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.18 | 701,603 |
| Most Guessed U.S. Cities | 0 | - | 4.90 | 91,464 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 61,585 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 198,700 |
| American Political Words | 0 | - | 4.41 | 22,329 |
| Children of U.S. Presidents | 0 | - | 3.92 | 16,196 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 54,572 |
| New England States | 0 | - | 4.54 | 52,445 |
| US States by Land Area | 0 | - | 4.58 | 48,530 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 36,199 |
| Add a Letter - Make a U.S. State | 0 | - | 4.74 | 76,591 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 51,127 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.78 | 37,341 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 37,446 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 35,367 |
| Which U.S. State - Multiple Choice | 0 | - | 4.45 | 18,989 |
| 10 Easternmost U.S. States | 0 | - | 4.54 | 53,017 |
| The Only U.S. State ... #1 | 0 | - | 4.51 | 82,659 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.47 | 40,531 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 103,416 |
| United States Map Quiz | 0 | - | 4.98 | 3,906,655 |
| Events by U.S. State #1 | 0 | - | 4.41 | 21,784 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.30 | 34,798 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 31,233 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.51 | 27,577 |
| Belize Country Quiz | 0 | - | 4.88 | 18,788 |
| Largest United States Airlines | 0 | - | 4.38 | 52,062 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.38 | 7,886 |
| Countries Closest to United States A-Z | 0 | - | 4.84 | 107,523 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,332 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 394,939 |
| Florida Pro Sport Teams | 0 | - | 4.66 | 10,349 |
| North Carolina... or South Carolina? | 0 | - | 4.22 | 9,723 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 49,235 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.70 | 59,971 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.75 | 54,049 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.76 | 52,942 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 69,378 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 44,118 |
| Longest U.S. State Borders | 0 | - | 4.65 | 34,299 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 58,314 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.54 | 31,783 |
| U.S. States with the Fewest Borders | 0 | - | 4.76 | 105,821 |
| U.S. States with the Most Borders | 0 | - | 4.56 | 61,076 |
| Third Most Common Language by U.S. State | 0 | - | 4.91 | 107,141 |
| American Legal Vocabulary | 0 | - | 4.40 | 32,175 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 31,759 |
| Cities by Picture #2 | 0 | - | 4.22 | 32,395 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 353,433 |
| Famous People from California by Picture | 0 | - | 4.31 | 31,830 |
| California Groups of Things | 0 | - | 4.23 | 42,859 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.40 | 55,730 |
| New York Groups of Things | 0 | - | 4.39 | 57,328 |
| Washington... or Washington D.C.? | 0 | - | 4.33 | 25,239 |
| People on Money - United States | 0 | - | 4.31 | 61,807 |
| U.S. History Groups of Two | 0 | - | 4.28 | 35,371 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.34 | 70,831 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.49 | 20,504 |
| Flyover States | 0 | - | 4.51 | 28,009 |
| U.S. States With Double Letters | 0 | - | 4.66 | 4,302 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.30 | 57,822 |
| U.S. States by Borders | 0 | - | 4.56 | 26,357 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.38 | 121,004 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.49 | 35,076 |
| Famous Canadians by Picture | 0 | - | 4.46 | 29,950 |
| Monarchies of Asia | 0 | - | 4.95 | 54,108 |
| Flags of North and South America Quiz | 0 | - | 4.99 | 310,433 |
| The Only American Country ... | 0 | - | 4.94 | 109,849 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 100,981 |
| U.S. State Border Crossings | 0 | - | 4.96 | 82,193 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.83 | 33,403 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 65,415 |
| U.S. Bill of Rights | 0 | - | 4.56 | 31,082 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 167,428 |
| Cities and Towns of Massachusetts | 0 | - | 4.89 | 60,550 |
| Who Did that Motown Song | 0 | - | 4.45 | 12,667 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 19,777 |
| U.S. States with the Lowest HDI | 0 | - | 4.46 | 27,509 |
| Events by U.S. State #2 | 0 | - | 4.25 | 17,840 |
| Movies by State Quiz | 0 | - | 4.23 | 39,377 |
| U.S. States with the Fewest Traffic Fatalities | 0 | - | 4.21 | 19,358 |
| U.S. States with the Most Traffic Fatalities | 0 | - | 4.07 | 17,583 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.60 | 31,108 |
| Canada Country Quiz | 0 | - | 4.54 | 121,526 |
| Canada Cities Map Quiz | 0 | - | 4.65 | 109,492 |
| Catholic Countries in Europe | 0 | - | 4.87 | 83,873 |
| Monarchies of Europe | 0 | - | 4.88 | 87,137 |
| English Monarchs Quiz | 0 | - | 4.91 | 447,829 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 116,531 |
| Top 10 Richest Countries in Asia | 0 | - | 4.87 | 81,256 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 101,939 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.90 | 93,059 |
| Top 10 Richest Countries in Africa | 0 | - | 4.87 | 67,894 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 109,688 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 79,817 |
| Top 10 American Countries by Coastline | 0 | - | 4.95 | 83,411 |
| Mexico Country Quiz | 0 | - | 4.48 | 66,535 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.90 | 40,123 |
| Brazil States Map Quiz | 0 | - | 4.83 | 39,638 |
| States of Brazil | 0 | - | 4.97 | 68,819 |
| Colombia Country Quiz | 0 | - | 4.92 | 35,096 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.81 | 52,507 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 18,423 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.94 | 134,340 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 69,625 |
| U.S. States by Picture #1 | 0 | - | 4.15 | 14,366 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.58 | 130,686 |
| Most-Visited U.S. Cities | 0 | - | 4.87 | 72,876 |
| 500 Biggest US Cities | 0 | - | 4.87 | 98,464 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 62,965 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.33 | 10,370 |
| America the Beautiful Lyrics | 0 | - | 4.26 | 19,200 |
| American Founding Fathers | 0 | - | 4.36 | 22,098 |
| Famous People from Alabama by Picture | 0 | - | 4.02 | 22,716 |
| Geography of California | 0 | - | 4.23 | 9,678 |
| California Pro Sport Teams | 0 | - | 4.24 | 22,134 |
| Famous People from Illinois by Picture | 0 | - | 4.02 | 18,850 |
| Chicago City Trivia | 0 | - | 4.26 | 30,413 |
| Famous People from Indiana by Picture | 0 | - | 4.32 | 22,717 |
| Famous People from Maryland by Picture | 0 | - | 4.16 | 15,488 |
| Famous People from Massachusetts by Picture | 0 | - | 4.25 | 22,646 |
| Famous People from Michigan by Picture | 0 | - | 4.25 | 19,582 |
| Famous People from New York by Picture | 0 | - | 4.02 | 25,451 |
