| Pixelated United States Map | 0 | - | 4.89 | 89,601 |
| US States Quiz | 0 | - | 5.00 | 16,040,006 |
| U.S. National Parks Quiz | 0 | - | 4.82 | 51,719 |
| Total United States Immigration by Country | 0 | - | 4.90 | 105,771 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.95 | 167,930 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.96 | 212,070 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 71,000 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 62,583 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 357,656 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 66,403 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 103,100 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 86,694 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 184,589 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 111,722 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 105,944 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 108,119 |
| U.S. States with Short Names | 0 | - | 4.90 | 142,001 |
| U.S. States that Start with M | 0 | - | 4.93 | 179,737 |
| U.S. States By Population | 0 | - | 4.90 | 137,985 |
| U.S. States that Start with N | 0 | - | 4.95 | 165,582 |
| U.S. States with Longest Names | 0 | - | 4.87 | 41,266 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 84,347 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 61,858 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 62,147 |
| US States with an Empty Map | 0 | - | 5.00 | 598,390 |
| Flags of North and South America Quiz | 0 | - | 4.99 | 338,900 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 37,500 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.96 | 312,051 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 141,251 |
| Countries that Beat the United States | 0 | - | 4.93 | 159,418 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 43,127 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 97,163 |
| U.S. States with the Most Immigrants | 0 | - | 4.84 | 79,040 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 89,074 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 126,183 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 199,666 |
| Top 10 Coldest U.S. States | 0 | - | 4.93 | 119,345 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 120,117 |
| Top 10 Most Native American U.S. States | 0 | - | 4.85 | 87,154 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.81 | 60,049 |
| States of Mexico | 0 | - | 4.93 | 160,919 |
| Mexico States Map Quiz | 0 | - | 4.82 | 99,081 |
| U.S. State Nicknames Quiz | 0 | - | 4.49 | 48,862 |
| Countries with American Expatriates | 0 | - | 4.55 | 42,003 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 39,553 |
| U.S. Cities by Picture #1 | 0 | - | 4.37 | 33,513 |
| Cities by Picture #2 | 0 | - | 4.18 | 34,180 |
| United States Country Quiz | 0 | - | 4.45 | 96,767 |
| Busiest Air Routes from the U.S. | 0 | - | 4.47 | 75,468 |
| Famous People from California by Picture | 0 | - | 4.29 | 34,855 |
| California Groups of Things | 0 | - | 4.24 | 44,547 |
| Hawaiian Islands Map Quiz | 0 | - | 4.77 | 21,888 |
| Famous People from New York by Picture | 0 | - | 4.02 | 26,753 |
| New York Groups of Things | 0 | - | 4.36 | 59,143 |
| Famous People from Texas by Picture | 0 | - | 4.03 | 32,792 |
| Countries Closest to Canada | 0 | - | 4.90 | 193,025 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.74 | 58,306 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 64,757 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 49,318 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 728,194 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 203,260 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 78,707 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 58,311 |
| Who Did that Motown Song | 0 | - | 4.46 | 12,914 |
| New England States | 0 | - | 4.51 | 59,257 |
| US States by Land Area | 0 | - | 4.56 | 51,168 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,430 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 80,483 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 54,140 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.78 | 39,580 |
| U.S. States by Borders | 0 | - | 4.61 | 34,166 |
| 10 Easternmost U.S. States | 0 | - | 4.55 | 55,163 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 85,799 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.47 | 42,851 |
| Asian Last Names in the United States | 0 | - | 4.43 | 45,540 |
| United States Map Quiz | 0 | - | 4.98 | 4,073,005 |
| U.S. States by Picture #1 | 0 | - | 4.17 | 15,020 |
| Countries Closest to Alaska | 0 | - | 4.91 | 106,001 |
| Geography of California | 0 | - | 4.23 | 10,213 |
| Countries Closest to Maine | 0 | - | 4.83 | 63,619 |
| Boroughs of New York City | 0 | - | 4.46 | 81,724 |
| New York Pro Sport Teams | 0 | - | 4.32 | 25,433 |
| Washington State by Picture | 0 | - | 4.24 | 7,503 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 51,476 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.68 | 63,668 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.74 | 55,603 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 54,331 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 44,712 |
| Longest U.S. State Borders | 0 | - | 4.63 | 37,644 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,253 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 37,893 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,228 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 110,745 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 61,888 |
| Flags of Africa Quiz | 0 | - | 5.00 | 432,513 |
| Belize Country Quiz | 0 | - | 4.87 | 20,160 |
| Top U.S. Universities | 0 | - | 4.15 | 138,617 |
| Largest United States Airlines | 0 | - | 4.38 | 53,777 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 111,916 |
| U.S. States by Governor Quiz | 0 | - | 4.42 | 17,622 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,113 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.13 | 25,761 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,221 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,586 |
| U.S. Government Agencies | 0 | - | 4.44 | 18,951 |
| Famous People from Alabama by Picture | 0 | - | 4.06 | 23,562 |
| Los Angeles vs. New York | 0 | - | 4.40 | 18,629 |
| Florida Pro Sport Teams | 0 | - | 4.68 | 11,303 |
| Hawaiian Islands | 0 | - | 4.83 | 41,053 |
| Famous People from Michigan by Picture | 0 | - | 4.29 | 20,790 |
| U.S. States that Border Tennessee | 0 | - | 4.82 | 63,738 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,147,361 |
| Flags of Asia Quiz | 0 | - | 4.99 | 574,605 |
| Georgia ... or Georgia? | 0 | - | 4.70 | 74,982 |
| U.S. Geography by Letter - C | 0 | - | 4.23 | 70,074 |
| U.S. Geography by Letter - A | 0 | - | 4.34 | 58,850 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 52,932 |
| U.S. Geography by Letter - T | 0 | - | 4.27 | 46,404 |
| U.S. Geography by Letter - P | 0 | - | 4.33 | 44,483 |
| U.S. Geography by Letter - M | 0 | - | 4.19 | 43,556 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,238 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 36,158 |
| Biggest Trading Partners - US | 0 | - | 4.63 | 104,971 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 41,460 |
| Musical Acts from Los Angeles Quiz | 0 | - | 4.26 | 13,036 |
| Movies Set in San Francisco | 0 | - | 4.22 | 19,784 |
| Movies Set in Miami | 0 | - | 4.32 | 16,553 |
| Musical Acts from New York City | 0 | - | 3.82 | 9,871 |
| State Quiz - New York | 0 | - | 4.52 | 43,832 |
| People on Money - United States | 0 | - | 4.32 | 62,762 |
| U.S. History Groups of Two | 0 | - | 4.23 | 43,497 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.19 | 43,754 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 73,396 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.50 | 21,167 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.44 | 48,884 |
| Flyover States | 0 | - | 4.52 | 28,940 |
| U.S. States With Double Letters | 0 | - | 4.65 | 23,036 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 74,452 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 38,663 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 36,483 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 32,101 |
| Name a Valid U.S. State #2 | 0 | - | 4.62 | 74,392 |
| U.S. State Superlatives #1 | 0 | - | 4.46 | 77,456 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 38,964 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 125,396 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 63,137 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 116,256 |
| Top 10 Least Religious U.S. States | 0 | - | 4.50 | 33,190 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 45,220 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.78 | 61,838 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 40,880 |
| Pixelated Africa Map | 0 | - | 4.98 | 94,911 |
| Flags of Oceania | 0 | - | 5.00 | 239,677 |
| The Only American Country ... | 0 | - | 4.92 | 116,769 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 107,107 |
| U.S. State Border Crossings | 0 | - | 4.96 | 87,301 |
| U.S. Citizenship Test Questions | 0 | - | 4.84 | 232,985 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 71,690 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 69,679 |
| Regions of US States | 0 | - | 4.16 | 32,280 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,147 |
| U.S. States with the Lowest HDI | 0 | - | 4.46 | 28,363 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 19,846 |
| Movies by State Quiz | 0 | - | 4.24 | 40,104 |
| Canada Country Quiz | 0 | - | 4.53 | 128,159 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 121,020 |
| Canada A-Z | 0 | - | 4.70 | 31,964 |
| Three Band Flags of Europe | 0 | - | 4.97 | 185,157 |
| Pixelated Europe Map | 0 | - | 4.88 | 117,539 |
| Pixelated Asia Map | 0 | - | 4.91 | 69,236 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 88,165 |
| Mexico Country Quiz | 0 | - | 4.49 | 70,043 |
| Mexico Cities Map Quiz | 0 | - | 4.75 | 32,480 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.90 | 48,193 |
| Brazil States Map Quiz | 0 | - | 4.84 | 44,776 |
| States of Brazil | 0 | - | 4.98 | 79,953 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.06 | 18,964 |
| U.S. States by Picture #2 | 0 | - | 3.51 | 11,313 |
| Most-Visited U.S. Cities | 0 | - | 4.88 | 85,524 |
| Every U.S. Metro Area on a Map | 0 | - | 4.96 | 76,299 |
| Senators Who Ran For President | 0 | - | 4.28 | 16,767 |
| U.S. Electoral College Landslides | 0 | - | 4.34 | 21,661 |
| California Pro Sport Teams | 0 | - | 4.23 | 22,488 |
| Chicago City Trivia | 0 | - | 4.29 | 31,047 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.89 | 25,754 |
| Texas Pro Sport Teams | 0 | - | 4.18 | 16,577 |
| History of Pennsylvania | 0 | - | 4.14 | 6,911 |
| History of Virginia | 0 | - | 4.34 | 11,374 |
| Washington D.C. by Picture | 0 | - | 4.48 | 26,149 |
| Events in U.S. History | 0 | - | 4.40 | 27,687 |
| Events by U.S. State #1 | 0 | - | 4.42 | 22,510 |
| Most Valuable Crops by U.S. State | 0 | - | 4.40 | 38,240 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 37,114 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.51 | 28,388 |
| U.S. States with the Most Venomous Snake Species | 0 | - | 4.47 | 25,915 |
| U.S. States with the Most Endangered Species | 0 | - | 4.50 | 14,177 |
| African-American Historical Figures | 0 | - | 4.18 | 16,839 |
| Canadian Prime Ministers Quiz | 0 | - | 4.63 | 54,708 |
| Capitals of Canadian Provinces | 0 | - | 4.87 | 84,704 |
| Most-Visited Countries by Canadians | 0 | - | 4.77 | 38,734 |
