| States of Brazil | 0 | - | 4.97 | 87,610 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,774 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,637 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,850 |
| South America Map Quiz | 0 | - | 5.00 | 1,547,171 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,149 |
| States of Mexico | 0 | - | 4.95 | 175,467 |
| South America A-Z | 0 | - | 4.13 | 10,892 |
| Word Chain - South America | 0 | - | 4.51 | 23,870 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,663 |
| Flags of North and South America | 0 | - | 4.99 | 371,804 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,267 |
| South American Physical Geography | 0 | - | 4.58 | 18,328 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,356 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,247 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,086 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,237 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,348 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,459 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,072 |
| The Only American Country ... | 0 | - | 4.92 | 121,388 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,913 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,768 |
| Famous People from South America | 0 | - | 4.15 | 21,913 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,514 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,694 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,823 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,349 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,318 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,723 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,810 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,558 |
| Canada A-Z | 0 | - | 4.73 | 32,772 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,398 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,893 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,711 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,938 |
| History of Mexico | 0 | - | 4.58 | 15,290 |
| Mexico States Map Quiz | 0 | - | 4.85 | 104,445 |
| Central American Countries | 0 | - | 4.98 | 155,869 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 147,781 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,422 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,776 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,307 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,173 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,155 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,795 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,066 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,324 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,382 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,431 |
| Pixelated United States Map | 0 | - | 4.87 | 94,058 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,324 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,501 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,518 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,629 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,150 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,191 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,675 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,950 |
| U.S. States By Population | 0 | - | 4.92 | 152,992 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,174 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,306 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,368 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,098 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,448 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,760 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,499 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,036 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,417 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,106 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,591 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,334 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,253 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,008 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,553 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,356 |
| Africa A-Z | 0 | - | 4.57 | 46,565 |
| Guyana Country Quiz | 0 | - | 4.50 | 22,758 |
| Venezuela Country Quiz | 0 | - | 4.50 | 30,557 |
| Paraguay Country Quiz | 0 | - | 4.53 | 25,233 |
| Bolivia Country Quiz | 0 | - | 4.63 | 26,221 |
| Suriname Country Quiz | 0 | - | 4.61 | 19,789 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,125 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,881 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,640 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 35,405 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,846 |
| Belize Country Quiz | 0 | - | 4.85 | 20,930 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,659 |
| Famous Caribbean People | 0 | - | 4.37 | 12,601 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 24,012 |
| Territories of the United States | 0 | - | 4.79 | 52,329 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,569 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,243 |
| New York City Geography | 0 | - | 4.42 | 33,052 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,506 |
| European Geography By Letter - A | 0 | - | 4.51 | 144,918 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,587 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,329 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,064 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,129 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,125 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,217 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,553 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,237 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,793 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,122 |
| Europe Map Quiz | 0 | - | 5.00 | 4,755,042 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,359 |
| Famous Germans | 0 | - | 4.50 | 55,160 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,270 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,059 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,614 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,353 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,814 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,296 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,650 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,935 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,743 |
| Middle East A-Z | 0 | - | 4.47 | 45,973 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,313,660 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,469 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,484 |
| Australian Capitals | 0 | - | 4.92 | 62,694 |
| South American Cities on the Map | 0 | - | 4.56 | 35,375 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,686 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,295 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,458 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,553 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,158 |
| United States Country Quiz | 0 | - | 4.43 | 101,294 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,818 |
| Canada Country Quiz | 0 | - | 4.54 | 132,312 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 124,050 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,989 |
| Official European Union Languages | 0 | - | 4.97 | 238,097 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,596 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,456 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,558 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,422 |
| Asia Map Quiz | 0 | - | 4.99 | 914,313 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,883 |
| A Quiz About Islam | 0 | - | 4.31 | 48,394 |
| Countries That Don't Recognize Israel | 0 | - | 4.67 | 34,741 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,818 |
| Countries of Africa | 0 | - | 5.00 | 2,529,560 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,583 |
| African East Coast | 0 | - | 4.96 | 95,797 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,595 |
| Canada or Africa by Area | 0 | - | 4.77 | 18,271 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,443 |
| Australia Map Quiz | 0 | - | 4.95 | 343,804 |
| Pixelated Americas Map | 0 | - | 4.39 | 47,078 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,274 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,771 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,309 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,557 |
| Brazil Country Quiz | 0 | - | 4.52 | 101,623 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,685 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,693 |
| Jamaica Country Quiz | 0 | - | 4.58 | 35,027 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,538 |
| Top U.S. Universities | 0 | - | 4.15 | 144,831 |
| Largest United States Airlines | 0 | - | 4.39 | 54,991 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 746,154 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,694 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,828 |
| U.S. States by Governor | 0 | - | 4.43 | 18,039 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,666 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,647 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,821 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,822 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,089 |
| New England States | 0 | - | 4.51 | 59,781 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,742 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,981 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,432 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,143 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,683 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 55,910 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,866 |
| U.S. States by Borders | 0 | - | 4.61 | 35,256 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,425 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,936 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,087 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,170 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,569 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.72 | 32,971 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,851 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,563 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,114 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,340 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,617 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,749 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,715 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,351 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,378 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,885 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,126 |
