| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,883 |
| Pixelated United States Map | 0 | - | 4.89 | 93,790 |
| US States Quiz | 0 | - | 5.00 | 16,773,090 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,538 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,994 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,711 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,149 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,667 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,082 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 329,635 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,957 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,211 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,720 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,311 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,885 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,885 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,312 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,550 |
| U.S. States By Population | 0 | - | 4.92 | 152,756 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,859 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,153 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,923 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,968 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,235 |
| US States with an Empty Map | 0 | - | 5.00 | 621,195 |
| Flags of North and South America | 0 | - | 4.99 | 369,914 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,930 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,788 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,103 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,050 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,380 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,184 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,269 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,470 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,550 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,199 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,053 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,486 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,681 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,718 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,245 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,668 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,576 |
| States of Mexico | 0 | - | 4.95 | 174,554 |
| Mexico States Map Quiz | 0 | - | 4.84 | 104,154 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,786 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 55,822 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,382 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,516 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,122 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,428 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,008 |
| United States Country Quiz | 0 | - | 4.43 | 100,999 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,718 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,277 |
| California Groups of Things | 0 | - | 4.25 | 45,335 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,222 |
| New York Groups of Things | 0 | - | 4.38 | 60,017 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,168 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,697 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,782 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,962 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,450 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 745,076 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,402 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,842 |
| New England States | 0 | - | 4.51 | 59,753 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,623 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,943 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,545 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 55,809 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,782 |
| U.S. States by Borders | 0 | - | 4.63 | 35,183 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,355 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,800 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,077 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,103 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,598 |
| United States Map Quiz | 0 | - | 4.98 | 4,147,808 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,389 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,759 |
| Geography of California | 0 | - | 4.25 | 10,528 |
| California Pro Sport Teams | 0 | - | 4.19 | 22,664 |
| Countries Closest to Maine | 0 | - | 4.85 | 66,725 |
| New York Pro Sport Teams | 0 | - | 4.32 | 25,833 |
| Texas Pro Sport Teams | 0 | - | 4.19 | 16,793 |
| History of Pennsylvania | 0 | - | 4.16 | 7,108 |
| History of Virginia | 0 | - | 4.31 | 11,573 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,763 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,576 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,360 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,101 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 34,974 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,689 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,568 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,814 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,433 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,700 |
| U.S. States with the Fewest Borders | 0 | - | 4.77 | 113,226 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,264 |
| Flags of Africa Quiz | 0 | - | 5.00 | 466,575 |
| Belize Country Quiz | 0 | - | 4.85 | 20,872 |
| Top U.S. Universities | 0 | - | 4.15 | 144,480 |
| Largest United States Airlines | 0 | - | 4.39 | 54,914 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,522 |
| U.S. States by Governor | 0 | - | 4.43 | 18,012 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,617 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,113 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,489 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,830 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,602 |
| Famous People from Alabama by Picture | 0 | - | 4.07 | 23,998 |
| Los Angeles vs. New York | 0 | - | 4.41 | 19,753 |
| Famous People from Illinois by Picture | 0 | - | 4.03 | 20,101 |
| Famous People from Indiana by Picture | 0 | - | 4.36 | 24,942 |
| Famous People from Maryland by Picture | 0 | - | 4.23 | 16,798 |
| Famous People from Massachusetts by Picture | 0 | - | 4.29 | 24,431 |
| Famous People from Michigan by Picture | 0 | - | 4.30 | 21,336 |
| Famous People from New York by Picture | 0 | - | 4.03 | 27,404 |
| Famous Missourians | 0 | - | 4.12 | 6,387 |
| Famous People from New Jersey by Picture | 0 | - | 4.25 | 22,183 |
| Famous People from Texas by Picture | 0 | - | 3.99 | 33,310 |
| Famous People from Ohio by Picture | 0 | - | 4.03 | 17,648 |
| Famous People from Pennsylvania by Picture | 0 | - | 4.24 | 25,357 |
| Movies Set in Pennsylvania | 0 | - | 4.19 | 11,537 |
| Famous People from Tennessee by Picture | 0 | - | 4.33 | 27,264 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,196 |
| Famous People from Virginia by Picture | 0 | - | 4.18 | 24,172 |
| Famous People from Wisconsin | 0 | - | 4.03 | 6,812 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,233,978 |
| Flags of Asia Quiz | 0 | - | 4.99 | 608,789 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 73,730 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,701 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,689 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,365 |
| U.S. Geography by Letter - P | 0 | - | 4.36 | 47,809 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 52,941 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 40,795 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 38,933 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,722 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,840 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 41,586 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,493 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,255 |
| American Founding Fathers | 0 | - | 4.42 | 23,102 |
| Musical Acts from Los Angeles by Two Songs | 0 | - | 4.27 | 15,954 |
| Movies Set in San Francisco | 0 | - | 4.23 | 19,924 |
| Movies Set in Miami | 0 | - | 4.32 | 16,685 |
| Movies and TV Shows Set in Boston | 0 | - | 4.17 | 9,755 |
| New York City Geography | 0 | - | 4.42 | 33,017 |
| Famous People from Washington State by Picture | 0 | - | 3.82 | 15,850 |
| State Quiz - Washington | 0 | - | 4.45 | 36,274 |
| People on Money - United States | 0 | - | 4.31 | 63,258 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,332 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,814 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,709 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,491 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 53,592 |
| Flyover States | 0 | - | 4.52 | 29,445 |
| U.S. States With Double Letters | 0 | - | 4.54 | 24,007 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 75,963 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,260 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 37,019 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 32,446 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 76,679 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 48,832 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,376 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,539 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,148 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,587 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 118,698 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,183 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,400 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,555 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,624 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,381 |
| Flags of Oceania | 0 | - | 5.00 | 256,818 |
| The Only American Country ... | 0 | - | 4.92 | 121,146 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,710 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,183 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,785 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,141 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,414 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,036 |
| Regions of U.S. States | 0 | - | 4.37 | 43,641 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,357 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,518 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,811 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,240 |
| Movies by State | 0 | - | 4.27 | 40,489 |
| Canada Country Quiz | 0 | - | 4.55 | 132,051 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,849 |
| Canada A-Z | 0 | - | 4.73 | 32,716 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,452 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,211 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,756 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,425 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,173 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,374 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,348 |
