| Deadliest U.S. Wars | 0 | - | 4.89 | 189,428 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,576 |
| US States Quiz | 0 | - | 5.00 | 16,727,940 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,529 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,012 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,823 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,607 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,286 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,775 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,386 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,363 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,723 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,730 |
| Pixelated United States Map | 0 | - | 4.89 | 93,607 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,644 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,971 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,899 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,514 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,566 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,857 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,105 |
| U.S. States By Population | 0 | - | 4.92 | 152,503 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,547 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,963 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,692 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,820 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,988 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,852 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,566 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,758 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,730 |
| US States with an Empty Map | 0 | - | 5.00 | 619,681 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,184 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,017 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 94,927 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,129 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,850 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,354 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,755 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,022 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,223 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,487 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,177 |
| States of Mexico | 0 | - | 4.95 | 173,787 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,961 |
| Top U.S. Universities | 0 | - | 4.15 | 144,234 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,820 |
| U.S. States by Governor | 0 | - | 4.43 | 17,994 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,591 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,564 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,178 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 73,620 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,585 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,581 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,251 |
| U.S. Geography by Letter - P | 0 | - | 4.36 | 47,678 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 52,859 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 40,679 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 38,820 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,587 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,329 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,488 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,308 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,096 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,804 |
| United States Country Quiz | 0 | - | 4.43 | 100,747 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,653 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,199 |
| People on Money - United States | 0 | - | 4.31 | 63,229 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,758 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,490 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,462 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,591 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,486 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,701 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,148 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,071 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,776 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,644 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,213 |
| New England States | 0 | - | 4.51 | 59,718 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,532 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,900 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,400 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 55,701 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,694 |
| U.S. States by Borders | 0 | - | 4.63 | 35,115 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,269 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,185 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,025 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,952 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,554 |
| United States Map Quiz | 0 | - | 4.98 | 4,144,119 |
| Senators Who Ran For President | 0 | - | 4.24 | 16,997 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 21,993 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,426 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,010 |
| Countries with NO Military | 0 | - | 4.97 | 61,287 |
| Georgia ... or Georgia? | 0 | - | 4.69 | 76,478 |
| Flags of North and South America | 0 | - | 4.99 | 368,365 |
| U.S. Geography by Letter - N | 0 | - | 3.79 | 52,398 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 48,411 |
| U.S. Geography by Letter - F | 0 | - | 3.87 | 44,660 |
| U.S. Geography by Letter - O | 0 | - | 3.52 | 40,432 |
| U.S. Geography by Letter - R | 0 | - | 4.18 | 30,508 |
| Belize Country Quiz | 0 | - | 4.85 | 20,831 |
| Largest United States Airlines | 0 | - | 4.39 | 54,866 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.50 | 40,860 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,536 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,402 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,768 |
| The American Civil War | 0 | - | 4.62 | 52,191 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,692 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,475 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,307 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,053 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.46 | 53,055 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 32,430 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 76,556 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 34,946 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 48,752 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,628 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,450 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,310 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,501 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,789 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,123 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,407 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,682 |
| U.S. States with the Fewest Borders | 0 | - | 4.77 | 113,115 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,238 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,424 |
| U.S. Cities by Picture #1 | 0 | - | 4.37 | 34,381 |
| Cities by Picture #2 | 0 | - | 4.19 | 34,967 |
| American Founding Fathers | 0 | - | 4.41 | 23,085 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,185 |
| California Groups of Things | 0 | - | 4.25 | 45,297 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,213 |
| New York Groups of Things | 0 | - | 4.38 | 59,971 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,279 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,644 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,472 |
| Flyover States | 0 | - | 4.52 | 29,418 |
| U.S. States With Double Letters | 0 | - | 4.54 | 23,957 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 75,869 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,225 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 36,992 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,041 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 118,610 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,352 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,171 |
| Countries With the Largest Air Forces | 0 | - | 4.47 | 51,266 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,426 |
| The Only American Country ... | 0 | - | 4.92 | 120,885 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,439 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,032 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,973 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,177 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,025 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,572 |
| Regions of U.S. States | 0 | - | 4.37 | 43,538 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,346 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,505 |
| U.S. States with the Lowest HDI | 0 | - | 4.46 | 28,782 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,217 |
| Movies by State | 0 | - | 4.27 | 40,459 |
| U.S. States with the Fewest Traffic Fatalities | 0 | - | 4.20 | 21,074 |
| U.S. States with the Most Traffic Fatalities | 0 | - | 4.10 | 19,060 |
| Canada Country Quiz | 0 | - | 4.55 | 131,857 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,715 |
| Canada A-Z | 0 | - | 4.73 | 32,677 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,471 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,340 |
| Monarchies of Europe | 0 | - | 4.90 | 97,462 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,430 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,969 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,091 |
| Monarchies of Asia | 0 | - | 4.97 | 70,677 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,495 |
| Military History Vocabulary | 0 | - | 4.91 | 66,717 |
| Battle to Country | 0 | - | 4.91 | 52,626 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,228 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,110 |
| U.S. Geography by Letter - W | 0 | - | 3.84 | 23,073 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,058 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,331 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,124 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,496 |
| States of Brazil | 0 | - | 4.98 | 86,645 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,404 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,561 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,631 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,163 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,444 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,831 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,960 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,372 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 137,945 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,607 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,702 |
