| Who Did that Motown Song? | 0 | - | 4.48 | 13,025 |
| US States Quiz | 0 | - | 5.00 | 16,734,664 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,594 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,348 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,811 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,422 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,483 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,584 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,747 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,841 |
| Pixelated United States Map | 0 | - | 4.89 | 93,641 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,694 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,011 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,481 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,942 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,558 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,602 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,907 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,152 |
| U.S. States By Population | 0 | - | 4.92 | 152,530 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,599 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,986 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,725 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,840 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,012 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,864 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,599 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,819 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,778 |
| US States with an Empty Map | 0 | - | 5.00 | 619,909 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,206 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,043 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 94,978 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,174 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,216 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,102 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,043 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,857 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,266 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,619 |
| States of Mexico | 0 | - | 4.95 | 173,873 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,988 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,338 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,494 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,099 |
| United States Country Quiz | 0 | - | 4.43 | 100,784 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,668 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,200 |
| California Groups of Things | 0 | - | 4.25 | 45,301 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,214 |
| Famous People from Michigan by Picture | 0 | - | 4.30 | 21,315 |
| New York Groups of Things | 0 | - | 4.38 | 59,977 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,521 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,714 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,877 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,379 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,909 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,121 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,786 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,654 |
| Musical Acts from Los Angeles by Two Songs | 0 | - | 4.27 | 15,894 |
| New England States | 0 | - | 4.51 | 59,723 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,541 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,906 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,426 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 55,714 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,711 |
| U.S. States by Borders | 0 | - | 4.63 | 35,124 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,280 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,202 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,038 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,561 |
| United States Map Quiz | 0 | - | 4.98 | 4,144,773 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,531 |
| Geography of California | 0 | - | 4.25 | 10,511 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,575 |
| New York Pro Sport Teams | 0 | - | 4.32 | 25,817 |
| Georgia ... or Georgia? | 0 | - | 4.69 | 76,498 |
| Flags of North and South America | 0 | - | 4.99 | 368,603 |
| Belize Country Quiz | 0 | - | 4.85 | 20,837 |
| Top U.S. Universities | 0 | - | 4.15 | 144,261 |
| Largest United States Airlines | 0 | - | 4.39 | 54,875 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.50 | 41,029 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,419 |
| U.S. States by Governor | 0 | - | 4.43 | 17,995 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,595 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,570 |
| America the Beautiful Lyrics | 0 | - | 4.27 | 19,722 |
| Famous People from Alabama by Picture | 0 | - | 4.07 | 23,978 |
| Los Angeles vs. New York | 0 | - | 4.41 | 19,698 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,769 |
| Hawaiian Islands | 0 | - | 4.83 | 42,492 |
| Famous People from New York by Picture | 0 | - | 4.03 | 27,382 |
| Famous People from Texas by Picture | 0 | - | 3.99 | 33,284 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,141 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,707 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,499 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,314 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,060 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.46 | 53,192 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 32,431 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 76,575 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,633 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,468 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,322 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,506 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,794 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,512 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,129 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,476 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,411 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,684 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,599 |
| U.S. States with the Fewest Borders | 0 | - | 4.77 | 113,135 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,241 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 73,645 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,610 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,599 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,279 |
| U.S. Geography by Letter - P | 0 | - | 4.36 | 47,701 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 52,885 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 40,711 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 38,843 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,608 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,441 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,811 |
| U.S. Cities by Picture #1 | 0 | - | 4.37 | 34,392 |
| Cities by Picture #2 | 0 | - | 4.19 | 34,976 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,205 |
| American Founding Fathers | 0 | - | 4.41 | 23,088 |
| Movies Set in San Francisco | 0 | - | 4.23 | 19,913 |
| Movies Set in Miami | 0 | - | 4.32 | 16,682 |
| Musical Acts from New York City | 0 | - | 3.82 | 10,110 |
| People on Money - United States | 0 | - | 4.31 | 63,232 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,285 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,765 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,648 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,474 |
| Flyover States | 0 | - | 4.52 | 29,421 |
| U.S. States With Double Letters | 0 | - | 4.54 | 23,961 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 75,884 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,233 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 36,995 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,069 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 118,617 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,357 |
| The Only American Country ... | 0 | - | 4.92 | 120,911 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,465 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,057 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,526 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,003 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,202 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,593 |
| Regions of U.S. States | 0 | - | 4.37 | 43,545 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,348 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,508 |
| U.S. States with the Lowest HDI | 0 | - | 4.46 | 28,789 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,221 |
| Movies by State | 0 | - | 4.27 | 40,460 |
| Canada Country Quiz | 0 | - | 4.55 | 131,884 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,732 |
| Canada A-Z | 0 | - | 4.73 | 32,686 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,125 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 77,857 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,211 |
| U.S. Geography by Letter - N | 0 | - | 3.79 | 52,419 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 48,423 |
| U.S. Geography by Letter - F | 0 | - | 3.87 | 44,678 |
| U.S. Geography by Letter - O | 0 | - | 3.52 | 40,736 |
| U.S. Geography by Letter - R | 0 | - | 4.18 | 30,531 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,076 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,331 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,156 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,510 |
| States of Brazil | 0 | - | 4.98 | 86,706 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,420 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,593 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,659 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,163 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,486 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,308 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,857 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,994 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,373 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,647 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,746 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,984 |
| Senators Who Ran For President | 0 | - | 4.24 | 16,997 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,086 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,471 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 21,998 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,823 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,663,211 |
| California Pro Sport Teams | 0 | - | 4.19 | 22,655 |
| Famous People from Florida by Picture | 0 | - | 3.86 | 19,690 |
| Famous People from Illinois by Picture | 0 | - | 4.03 | 20,080 |
| Chicago City Trivia | 0 | - | 4.31 | 31,398 |
| Famous People from Indiana by Picture | 0 | - | 4.35 | 24,905 |
| Famous People from Maryland by Picture | 0 | - | 4.23 | 16,778 |
| Famous People from Massachusetts by Picture | 0 | - | 4.29 | 24,403 |
