| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,591 |
| Pixelated United States Map | 0 | - | 4.88 | 94,649 |
| US States Quiz | 0 | - | 5.00 | 16,960,695 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,231 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,329 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,146 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,272 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,753 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,045 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 56,157 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,475 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,259 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,236 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,560 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,784 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 112,001 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,015 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,660 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,018 |
| U.S. States By Population | 0 | - | 4.92 | 153,960 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,986 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,756 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,707 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,441 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,952 |
| Flags of North and South America | 0 | - | 4.99 | 375,817 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,330 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,967 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,312 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,104 |
| US States with an Empty Map | 0 | - | 5.00 | 627,434 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,275 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,913 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,772 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,887 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,045 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,489 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,117 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,680 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,298 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,642 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,132 |
| Movies and TV Shows Set in Boston | 0 | - | 4.17 | 9,793 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,169 |
| States of Mexico | 0 | - | 4.96 | 177,612 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,439 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,890 |
| Washington State by Picture | 0 | - | 4.26 | 7,744 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,049 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,766 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,667 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,643 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,260 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,674 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,244 |
| United States Country Quiz | 0 | - | 4.43 | 101,994 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,021 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,643 |
| California Groups of Things | 0 | - | 4.26 | 45,704 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,305 |
| Famous People from Massachusetts by Picture | 0 | - | 4.29 | 24,635 |
| New York Groups of Things | 0 | - | 4.39 | 71,553 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,528 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,872 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,149 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,958 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,818 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 53,249 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 748,987 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,223 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,095 |
| New England States | 0 | - | 4.51 | 59,872 |
| U.S. States by Land Area | 0 | - | 4.63 | 52,986 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,087 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,028 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,218 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,085 |
| U.S. States by Borders | 0 | - | 4.61 | 35,431 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,635 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,255 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,399 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,799 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,913 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,572 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,489 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,895 |
| Geography of California | 0 | - | 4.26 | 10,605 |
| California Pro Sport Teams | 0 | - | 4.19 | 22,707 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,456 |
| New York Pro Sport Teams | 0 | - | 4.32 | 25,941 |
| Texas Pro Sport Teams | 0 | - | 4.19 | 16,847 |
| History of Pennsylvania | 0 | - | 4.16 | 7,159 |
| History of Virginia | 0 | - | 4.31 | 11,630 |
| Belize Country Quiz | 0 | - | 4.85 | 21,058 |
| Top U.S. Universities | 0 | - | 4.15 | 145,620 |
| Largest United States Airlines | 0 | - | 4.39 | 55,121 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 52,714 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,799 |
| U.S. States by Governor | 0 | - | 4.43 | 18,106 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,740 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,203 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,553 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.22 | 10,888 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,753 |
| Famous People from Alabama by Picture | 0 | - | 4.07 | 24,111 |
| Los Angeles vs. New York | 0 | - | 4.41 | 19,984 |
| Famous People from Illinois by Picture | 0 | - | 4.03 | 20,204 |
| Famous People from Indiana by Picture | 0 | - | 4.36 | 25,145 |
| Famous People from Maryland by Picture | 0 | - | 4.23 | 16,895 |
| Famous People from Michigan by Picture | 0 | - | 4.30 | 21,464 |
| Famous People from New York by Picture | 0 | - | 4.03 | 27,580 |
| Famous Missourians | 0 | - | 4.12 | 6,428 |
| Famous People from New Jersey by Picture | 0 | - | 4.25 | 22,321 |
| Famous People from Texas by Picture | 0 | - | 3.99 | 33,429 |
| Famous People from Ohio by Picture | 0 | - | 4.03 | 17,721 |
| Famous People from Pennsylvania by Picture | 0 | - | 4.24 | 25,501 |
| Movies Set in Pennsylvania | 0 | - | 4.19 | 11,573 |
| Famous People from Tennessee by Picture | 0 | - | 4.33 | 27,432 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,460 |
| Famous People from Virginia by Picture | 0 | - | 4.18 | 24,262 |
| Famous People from Wisconsin | 0 | - | 4.03 | 6,848 |
| Events in U.S. History | 0 | - | 4.41 | 28,780 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 53,069 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.64 | 65,996 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,579 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,297 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,712 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,542 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,289 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 35,105 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,219 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,895 |
| Longest U.S. State Borders | 0 | - | 4.69 | 40,047 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,631 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,718 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,941 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,934 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,399 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,949 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,555 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,817 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,791 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 114,114 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,346 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,579 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,142 |
| Flags of Africa Quiz | 0 | - | 5.00 | 475,652 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,418 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,446 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,408 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 50,133 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 54,314 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,562 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,451 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,610 |
| U.S. Geography by Letter - R | 0 | - | 4.22 | 36,734 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,504 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,916 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,990 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,434 |
| American Founding Fathers | 0 | - | 4.42 | 23,258 |
| Musical Acts from Los Angeles by Two Songs | 0 | - | 4.27 | 16,248 |
| Movies Set in San Francisco | 0 | - | 4.23 | 19,953 |
| Movies Set in Miami | 0 | - | 4.32 | 16,709 |
| New York City Geography | 0 | - | 4.43 | 33,164 |
| People on Money - United States | 0 | - | 4.31 | 63,403 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,557 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,175 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,997 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,554 |
| Flyover States | 0 | - | 4.52 | 29,575 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,221 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,339 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,429 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,162 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,879 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 119,261 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,630 |
| Flags of Oceania | 0 | - | 5.00 | 261,793 |
| The Only American Country ... | 0 | - | 4.92 | 122,042 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,496 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,763 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,588 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,798 |
| Names of Generations | 0 | - | 4.09 | 45,382 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,763 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,070 |
| Regions of U.S. States | 0 | - | 4.37 | 44,099 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,406 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,619 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,916 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,346 |
| Movies by State | 0 | - | 4.27 | 40,591 |
| Canada Country Quiz | 0 | - | 4.55 | 132,885 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,498 |
| Canada A-Z | 0 | - | 4.73 | 32,929 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,182 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,273 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,630 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,275 |
