| U.S. Cabinet Departments | 0 | - | 4.86 | 72,869 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,768 |
| US States Quiz | 0 | - | 5.00 | 16,871,138 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,992 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,634 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,630 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,896 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,934 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,619 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,467 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,965 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,211 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,895 |
| Pixelated United States Map | 0 | - | 4.87 | 94,253 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,648 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,754 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,846 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,394 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,411 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,972 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,253 |
| U.S. States By Population | 0 | - | 4.92 | 153,524 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,424 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,430 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,283 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,203 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,603 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,168 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,422 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,418 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,580 |
| US States with an Empty Map | 0 | - | 5.00 | 624,439 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,750 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,461 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,000 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,163 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,408 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,860 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 747,052 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,846 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,979 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,438 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,157 |
| States of Mexico | 0 | - | 4.95 | 175,989 |
| Mexico States Map Quiz | 0 | - | 4.85 | 104,709 |
| Top U.S. Universities | 0 | - | 4.15 | 145,104 |
| U.S. States by Governor | 0 | - | 4.43 | 18,061 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,693 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,676 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,762 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,949 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,077 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,082 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,076 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,770 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 53,832 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,325 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,129 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,299 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,119 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,528 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,509 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,583 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,172 |
| United States Country Quiz | 0 | - | 4.43 | 101,490 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,871 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,361 |
| People on Money - United States | 0 | - | 4.31 | 63,343 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,045 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,744 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,765 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,697 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,375 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,326 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,966 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,001 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 209,443 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,975 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,878 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,346 |
| New England States | 0 | - | 4.51 | 59,807 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,804 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,007 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,809 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 55,996 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,920 |
| U.S. States by Borders | 0 | - | 4.61 | 35,310 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,479 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,036 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,216 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,758 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,105 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,039 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,038 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,766 |
| Flags of North and South America | 0 | - | 4.99 | 373,004 |
| U.S. Geography by Letter - N | 0 | - | 3.80 | 52,738 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 48,763 |
| U.S. Geography by Letter - F | 0 | - | 3.87 | 45,025 |
| U.S. Geography by Letter - O | 0 | - | 3.52 | 41,490 |
| U.S. Geography by Letter - R | 0 | - | 4.18 | 31,016 |
| Belize Country Quiz | 0 | - | 4.85 | 20,970 |
| Largest United States Airlines | 0 | - | 4.39 | 55,024 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,330 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 42,148 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,146 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,654 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,840 |
| Events in U.S. History | 0 | - | 4.41 | 28,666 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 52,921 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,787 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,479 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,185 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,114 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,492 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,003 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,027 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,794 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,811 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,523 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,630 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,874 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,297 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,489 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,769 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 113,835 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,303 |
| Native American Words | 0 | - | 4.26 | 24,765 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,724 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,555 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,132 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,183 |
| American Founding Fathers | 0 | - | 4.42 | 23,223 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,434 |
| California Groups of Things | 0 | - | 4.25 | 45,484 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,261 |
| New York Groups of Things | 0 | - | 4.35 | 63,663 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,454 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,843 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,520 |
| Flyover States | 0 | - | 4.52 | 29,512 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,115 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 76,149 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,339 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,097 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,364 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 119,091 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,518 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,357 |
| Words for Leaders | 0 | - | 4.77 | 257,261 |
| The Only American Country ... | 0 | - | 4.92 | 121,589 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,097 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,472 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,457 |
| Names of Generations | 0 | - | 4.09 | 44,857 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,003 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,052 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,928 |
| Regions of U.S. States | 0 | - | 4.37 | 43,866 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,385 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,571 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,847 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,293 |
| Movies by State | 0 | - | 4.27 | 40,542 |
| U.S. States with the Fewest Traffic Fatalities | 0 | - | 4.20 | 21,147 |
| U.S. States with the Most Traffic Fatalities | 0 | - | 4.10 | 19,134 |
| Canada Country Quiz | 0 | - | 4.54 | 132,468 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 124,186 |
| Canada A-Z | 0 | - | 4.73 | 32,833 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,114 |
| Monarchies of Europe | 0 | - | 4.90 | 98,128 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,481 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,960 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,501 |
| Monarchies of Asia | 0 | - | 4.97 | 71,083 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,878 |
| Military History Vocabulary | 0 | - | 4.91 | 67,145 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,329 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,399 |
| U.S. Geography by Letter - W | 0 | - | 3.86 | 23,403 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,411 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,879 |
| Brazil States Map Quiz | 0 | - | 4.85 | 48,035 |
| States of Brazil | 0 | - | 4.97 | 87,987 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,713 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,245 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,200 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,198 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 159,259 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 80,048 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,763 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,437 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 138,324 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,633 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 93,806 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 116,785 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,770 |
| Politicians with Other Careers | 0 | - | 3.98 | 15,018 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,155 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,519 |
