| Who Did that Motown Song? | 0 | - | 4.48 | 13,025 |
| US States Quiz | 0 | - | 5.00 | 16,731,589 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,557 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,318 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,791 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,404 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,417 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,578 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,740 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,776 |
| Pixelated United States Map | 0 | - | 4.89 | 93,627 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,671 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,991 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,456 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,916 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,531 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,586 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,875 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,132 |
| U.S. States By Population | 0 | - | 4.92 | 152,517 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,576 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,978 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,709 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,831 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,003 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,855 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,584 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,792 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,749 |
| US States with an Empty Map | 0 | - | 5.00 | 619,784 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,192 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,027 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 94,946 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,156 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,214 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,058 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,022 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,842 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,240 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,611 |
| States of Mexico | 0 | - | 4.95 | 173,828 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,977 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,333 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,490 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,099 |
| United States Country Quiz | 0 | - | 4.43 | 100,766 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,660 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,190 |
| California Groups of Things | 0 | - | 4.25 | 45,298 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,214 |
| Famous People from Michigan by Picture | 0 | - | 4.30 | 21,312 |
| New York Groups of Things | 0 | - | 4.38 | 59,974 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,504 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,707 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,862 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,360 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,821 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,100 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,781 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,651 |
| Musical Acts from Los Angeles by Two Songs | 0 | - | 4.27 | 15,890 |
| New England States | 0 | - | 4.51 | 59,720 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,534 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,902 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,417 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 55,709 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,702 |
| U.S. States by Borders | 0 | - | 4.63 | 35,119 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,272 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,193 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,032 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,559 |
| United States Map Quiz | 0 | - | 4.98 | 4,144,410 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,496 |
| Geography of California | 0 | - | 4.25 | 10,511 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,561 |
| New York Pro Sport Teams | 0 | - | 4.32 | 25,815 |
| Georgia ... or Georgia? | 0 | - | 4.69 | 76,492 |
| Flags of North and South America | 0 | - | 4.99 | 368,502 |
| Belize Country Quiz | 0 | - | 4.85 | 20,836 |
| Top U.S. Universities | 0 | - | 4.15 | 144,244 |
| Largest United States Airlines | 0 | - | 4.39 | 54,870 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.50 | 40,938 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,412 |
| U.S. States by Governor | 0 | - | 4.43 | 17,995 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,592 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,568 |
| America the Beautiful Lyrics | 0 | - | 4.27 | 19,721 |
| Famous People from Alabama by Picture | 0 | - | 4.07 | 23,972 |
| Los Angeles vs. New York | 0 | - | 4.41 | 19,691 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,768 |
| Hawaiian Islands | 0 | - | 4.83 | 42,484 |
| Famous People from New York by Picture | 0 | - | 4.03 | 27,377 |
| Famous People from Texas by Picture | 0 | - | 3.99 | 33,281 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,135 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,700 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,484 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,313 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,055 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.46 | 53,124 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 32,430 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 76,564 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,629 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,456 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,316 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,502 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,790 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,498 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,126 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,470 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,408 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,682 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,597 |
| U.S. States with the Fewest Borders | 0 | - | 4.77 | 113,127 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,239 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 73,631 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,596 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,584 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,259 |
| U.S. Geography by Letter - P | 0 | - | 4.36 | 47,682 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 52,868 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 40,692 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 38,829 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,598 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,432 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,808 |
| U.S. Cities by Picture #1 | 0 | - | 4.37 | 34,383 |
| Cities by Picture #2 | 0 | - | 4.19 | 34,971 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,203 |
| American Founding Fathers | 0 | - | 4.41 | 23,085 |
| Movies Set in San Francisco | 0 | - | 4.23 | 19,912 |
| Movies Set in Miami | 0 | - | 4.32 | 16,681 |
| Musical Acts from New York City | 0 | - | 3.82 | 10,110 |
| People on Money - United States | 0 | - | 4.31 | 63,231 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,283 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,761 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,646 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,473 |
| Flyover States | 0 | - | 4.52 | 29,420 |
| U.S. States With Double Letters | 0 | - | 4.54 | 23,957 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 75,876 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,227 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 36,994 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,060 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 118,613 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,356 |
| The Only American Country ... | 0 | - | 4.92 | 120,901 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,450 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,044 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,506 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,984 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,184 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,582 |
| Regions of U.S. States | 0 | - | 4.37 | 43,540 |
| 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 | 29,506 |
| U.S. States with the Lowest HDI | 0 | - | 4.46 | 28,783 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,221 |
| Movies by State | 0 | - | 4.27 | 40,459 |
| Canada Country Quiz | 0 | - | 4.55 | 131,872 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,722 |
| Canada A-Z | 0 | - | 4.73 | 32,679 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,117 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,192 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,194 |
| U.S. Geography by Letter - N | 0 | - | 3.79 | 52,402 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 48,415 |
| U.S. Geography by Letter - F | 0 | - | 3.87 | 44,667 |
| U.S. Geography by Letter - O | 0 | - | 3.52 | 40,568 |
| U.S. Geography by Letter - R | 0 | - | 4.18 | 30,515 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,070 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,331 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,145 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,507 |
| States of Brazil | 0 | - | 4.98 | 86,674 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,410 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,571 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,648 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,163 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,461 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,308 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,843 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,970 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,372 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,627 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,718 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,960 |
| Senators Who Ran For President | 0 | - | 4.24 | 16,997 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,084 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,471 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 21,996 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,822 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,662,162 |
| California Pro Sport Teams | 0 | - | 4.19 | 22,654 |
| Famous People from Florida by Picture | 0 | - | 3.86 | 19,687 |
| Famous People from Illinois by Picture | 0 | - | 4.03 | 20,078 |
| Chicago City Trivia | 0 | - | 4.31 | 31,396 |
| Famous People from Indiana by Picture | 0 | - | 4.35 | 24,899 |
| Famous People from Maryland by Picture | 0 | - | 4.23 | 16,774 |
| Famous People from Massachusetts by Picture | 0 | - | 4.29 | 24,400 |
