| US States Quiz | 0 | - | 5.00 | 14,595,325 |
| Federal Subjects of Russia | 0 | - | 4.95 | 110,551 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 338,527 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 54,145 |
| Total United States Immigration by Country | 0 | - | 4.90 | 95,960 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 145,308 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.95 | 182,354 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 67,319 |
| Pixelated United States Map | 0 | - | 4.91 | 81,391 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 92,125 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 77,710 |
| Deadliest U.S. Wars | 0 | - | 4.82 | 157,033 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 99,500 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 95,203 |
| 10 Southernmost U.S. States | 0 | - | 4.84 | 98,308 |
| U.S. States with Short Names | 0 | - | 4.87 | 128,485 |
| U.S. States that Start with M | 0 | - | 4.91 | 149,320 |
| U.S. States By Population | 0 | - | 4.90 | 129,293 |
| U.S. States that Start with N | 0 | - | 4.95 | 154,473 |
| U.S. States with Longest Names | 0 | - | 4.84 | 35,565 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 77,134 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 57,923 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 55,255 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.94 | 75,529 |
| US States with an Empty Map | 0 | - | 5.00 | 549,292 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 34,719 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.95 | 270,253 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 123,515 |
| Countries that Beat the United States | 0 | - | 4.92 | 143,924 |
| Louisiana Purchase with a Map | 0 | - | 4.94 | 35,564 |
| U.S. States with the Longest International Borders | 0 | - | 4.81 | 39,988 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 88,639 |
| U.S. States with the Most Immigrants | 0 | - | 4.86 | 72,793 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 70,418 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 115,036 |
| Hawaiian Islands Map Quiz | 0 | - | 4.88 | 20,909 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 183,265 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 99,395 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 99,979 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 70,456 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 56,914 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 73,877 |
| Eastern Europe Map Quiz | 0 | - | 4.89 | 114,813 |
| Slavic Countries | 0 | - | 4.96 | 99,870 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 101,046 |
| States of Mexico | 0 | - | 4.95 | 138,722 |
| Mexico States Map Quiz | 0 | - | 4.85 | 89,600 |
| Russia Country Quiz | 0 | - | 4.84 | 102,446 |
| Most Mentioned Allies of Russia | 0 | - | 4.47 | 33,966 |
| Most Mentioned Enemies of Russia | 0 | - | 4.70 | 81,948 |
| Countries That Border Russia | 0 | - | 4.98 | 423,655 |
| Georgia ... or Georgia? | 0 | - | 4.79 | 71,469 |
| U.S. State Nicknames Quiz | 0 | - | 4.49 | 45,835 |
| U.S. National Parks Quiz | 0 | - | 4.79 | 46,317 |
| Countries with American Expatriates | 0 | - | 4.59 | 40,818 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 38,154 |
| United States Country Quiz | 0 | - | 4.45 | 88,094 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 72,032 |
| The U.S. Government - How Does it Work? | 0 | - | 4.33 | 39,672 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.77 | 56,451 |
| Countries Closest to Canada | 0 | - | 4.90 | 183,353 |
| Europe Map Quiz | 0 | - | 5.00 | 4,260,988 |
| Countries that Border Hungary | 0 | - | 4.98 | 95,824 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 89,625 |
| Washington... or Washington D.C.? | 0 | - | 4.31 | 25,106 |
| Which U.S. State - Multiple Choice | 0 | - | 4.45 | 18,879 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 382,397 |
| History of Russia Quiz | 0 | - | 4.48 | 29,750 |
| Geography of Russia | 0 | - | 4.54 | 20,086 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.82 | 30,713 |
| Moldova Country Quiz | 0 | - | 4.87 | 27,117 |
| Asian Last Names in the United States | 0 | - | 4.41 | 43,011 |
| United States Map Quiz | 0 | - | 4.98 | 3,883,940 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.18 | 697,414 |
| American Legal Vocabulary | 0 | - | 4.43 | 31,990 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 198,108 |
| U.S. Federal Agency Acronyms | 0 | - | 4.51 | 75,686 |
| 10 Closest Megacities to New York City | 0 | - | 4.54 | 54,310 |
| New England States | 0 | - | 4.53 | 52,367 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 49,005 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.66 | 59,414 |
| US States by Land Area | 0 | - | 4.59 | 48,224 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.52 | 36,028 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.74 | 53,803 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.76 | 52,721 |
| Add a Letter - Make a U.S. State | 0 | - | 4.74 | 76,038 |
| Events by U.S. State #1 | 0 | - | 4.41 | 21,668 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 50,704 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.79 | 37,030 |
| 10 Easternmost U.S. States | 0 | - | 4.54 | 52,733 |
| The Only U.S. State ... #1 | 0 | - | 4.55 | 82,191 |
| Longest U.S. State Borders | 0 | - | 4.62 | 33,832 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.47 | 40,293 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.52 | 58,136 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.54 | 31,657 |
| U.S. States with the Fewest Borders | 0 | - | 4.76 | 104,805 |
| U.S. States with the Most Borders | 0 | - | 4.57 | 60,955 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 334,166 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.87 | 88,642 |
| Latvia Country Quiz | 0 | - | 4.88 | 28,229 |
| Counties of England | 0 | - | 4.96 | 684,130 |
| Belize Country Quiz | 0 | - | 4.88 | 18,580 |
| Top U.S. Universities | 0 | - | 4.11 | 112,217 |
| Largest United States Airlines | 0 | - | 4.38 | 51,843 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 33,787 |
| Biggest Trading Partners - US | 0 | - | 4.64 | 98,519 |
| U.S. States by Governor Quiz | 0 | - | 4.42 | 16,891 |
| U.S. Political Parties in History | 0 | - | 4.42 | 26,056 |
| U.S. Government Agencies | 0 | - | 4.41 | 17,512 |
| Florida Pro Sport Teams | 0 | - | 4.63 | 9,979 |
| North Carolina... or South Carolina? | 0 | - | 4.21 | 9,636 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.44 | 47,594 |
| Name a Valid U.S. State #2 | 0 | - | 4.64 | 68,607 |
| Name a Valid U.S. State #3 | 0 | - | 4.79 | 43,629 |
| U.S. State Superlatives #1 | 0 | - | 4.45 | 75,025 |
| U.S. State Superlatives #2 | 0 | - | 4.51 | 37,092 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.54 | 60,315 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.79 | 58,094 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.44 | 39,236 |
| Countries That Use the Euro | 0 | - | 4.91 | 61,674 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,034,034 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.93 | 1,172,571 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 91,062 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.82 | 38,926 |
| The Only European Country ... | 0 | - | 4.94 | 176,236 |
| Champions League Winners | 0 | - | 4.91 | 840,557 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 106,089 |
| Cities by Picture #2 | 0 | - | 4.22 | 32,165 |
| California Groups of Things | 0 | - | 4.23 | 42,582 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.40 | 55,363 |
| New York Groups of Things | 0 | - | 4.39 | 57,003 |
| People on Money - United States | 0 | - | 4.31 | 61,646 |
| U.S. History Groups of Two | 0 | - | 4.27 | 35,151 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.19 | 41,042 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.34 | 70,426 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.49 | 20,417 |
| Flyover States | 0 | - | 4.51 | 27,874 |
| U.S. States With Double Letters | 0 | - | 4.64 | 4,054 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.29 | 57,413 |
| U.S. States by Borders | 0 | - | 4.59 | 26,126 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 37,283 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 35,230 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.38 | 120,546 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.46 | 102,565 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.48 | 34,851 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 159,679 |
| 10 Westernmost Countries in Europe | 0 | - | 4.95 | 137,563 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.94 | 183,712 |
| European Landmarks Map Quiz | 0 | - | 4.98 | 76,348 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 283,382 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 113,799 |
| Famous Italian-Americans | 0 | - | 4.13 | 7,249 |
| Countries Surrounding Rome | 0 | - | 4.96 | 46,412 |
| Spain Cities Map Quiz | 0 | - | 4.86 | 85,417 |
| Regions of Spain Quiz | 0 | - | 4.85 | 93,687 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 168,220 |
| Cantons of Switzerland | 0 | - | 4.96 | 39,831 |
| Parts of the United Kingdom | 0 | - | 4.88 | 83,034 |
| England or Wales? | 0 | - | 4.93 | 39,888 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 264,579 |
| All Champions League Teams Ever | 0 | - | 4.89 | 102,798 |
| Flags of North and South America Quiz | 0 | - | 4.99 | 306,727 |
| The Only American Country ... | 0 | - | 4.94 | 108,939 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 100,100 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 80,516 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.89 | 39,036 |
| Brazil States Map Quiz | 0 | - | 4.84 | 39,014 |
| States of Brazil | 0 | - | 4.96 | 67,459 |
| U.S. State Border Crossings | 0 | - | 4.96 | 81,477 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 220,707 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 18,338 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.82 | 32,547 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 64,708 |
| U.S. States by Picture #1 | 0 | - | 4.15 | 14,283 |
| Most-Visited U.S. Cities | 0 | - | 4.87 | 71,321 |
| Every U.S. Metro Area on a Map | 0 | - | 4.96 | 62,010 |
| Senators Who Ran For President | 0 | - | 4.28 | 16,258 |
| U.S. Electoral College Landslides | 0 | - | 4.33 | 20,935 |
| Geography of California | 0 | - | 4.23 | 9,623 |
| California Pro Sport Teams | 0 | - | 4.23 | 22,047 |
| Chicago City Trivia | 0 | - | 4.26 | 30,332 |
| Cities and Towns of Massachusetts | 0 | - | 4.89 | 59,349 |
| Who Did that Motown Song | 0 | - | 4.45 | 12,633 |
| New York Pro Sport Teams | 0 | - | 4.29 | 14,932 |
| Texas Pro Sport Teams | 0 | - | 4.11 | 16,166 |
| History of Pennsylvania | 0 | - | 4.09 | 6,398 |
| History of Virginia | 0 | - | 4.33 | 10,905 |
| Washington State by Picture | 0 | - | 4.16 | 7,098 |
| Events in U.S. History | 0 | - | 4.39 | 25,919 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 19,721 |
| U.S. States with the Lowest HDI | 0 | - | 4.46 | 27,384 |
| Events by U.S. State #2 | 0 | - | 4.25 | 17,772 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 31,417 |
| Movies by State Quiz | 0 | - | 4.23 | 39,299 |
| Most Valuable Crops by U.S. State | 0 | - | 4.38 | 36,589 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.29 | 34,271 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 30,955 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.51 | 27,471 |
| U.S. States with the Most Venomous Snake Species | 0 | - | 4.47 | 24,901 |
| U.S. States with the Most Endangered Species | 0 | - | 4.50 | 13,844 |
