| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,603 |
| States of Mexico | 0 | - | 4.95 | 174,083 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,397 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,237 |
| States of Brazil | 0 | - | 4.98 | 86,803 |
| United States Map Quiz | 0 | - | 4.98 | 4,145,683 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,915 |
| Flags of North and South America | 0 | - | 4.99 | 369,050 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,611 |
| South America Map Quiz | 0 | - | 5.00 | 1,543,078 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,015,156 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,867 |
| Canada Provinces and Territories | 0 | - | 5.00 | 339,086 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 637,088 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,001 |
| Famous Germans | 0 | - | 4.50 | 54,756 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,744 |
| The Only American Country ... | 0 | - | 4.92 | 121,027 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,537 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,394 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,238 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,275 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,094 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,043 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,261 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,619 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,531 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,534 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,103 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,125 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,758 |
| Uruguay Country Quiz | 0 | - | 4.83 | 31,409 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,766 |
| Canada A-Z | 0 | - | 4.73 | 32,698 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,299 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,052 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,649 |
| History of Mexico | 0 | - | 4.58 | 15,247 |
| Mexico States Map Quiz | 0 | - | 4.84 | 104,045 |
| South America A-Z | 0 | - | 4.13 | 10,857 |
| Word Chain - South America | 0 | - | 4.51 | 23,794 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,557 |
| Central American Countries | 0 | - | 4.98 | 155,346 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 146,444 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,154 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,423 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,868 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,521 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,704 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,609 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,800 |
| Famous Australians by Description | 0 | - | 4.23 | 27,728 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,144 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.92 | 80,551 |
| South American Physical Geography | 0 | - | 4.58 | 18,294 |
| Pixelated United States Map | 0 | - | 4.89 | 93,688 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,783 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,091 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,087 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,699 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,724 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,079 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,322 |
| U.S. States By Population | 0 | - | 4.92 | 152,627 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,701 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,045 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,030 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,791 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,898 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,107 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,284 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,215 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,657 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,161 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,789 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 66,981 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,564 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,487 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,121 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,575 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,985 |
| Africa A-Z | 0 | - | 4.57 | 46,445 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,944 |
| Famous People from South America | 0 | - | 4.15 | 21,836 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,116 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,817 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,912 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,258 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,079 |
| Famous Canadians Quiz | 0 | - | 3.94 | 23,374 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,016 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 210,429 |
| Famous Russians | 0 | - | 4.16 | 23,753 |
| Famous French People | 0 | - | 4.12 | 28,087 |
| Famous Irish People | 0 | - | 4.05 | 45,892 |
| Famous Nordic People | 0 | - | 4.34 | 19,933 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,558 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,996 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 34,923 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,859 |
| Famous Chinese People | 0 | - | 4.09 | 11,822 |
| Belize Country Quiz | 0 | - | 4.85 | 20,847 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,618 |
| Famous Caribbean People | 0 | - | 4.37 | 12,575 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 23,960 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,094 |
| Territories of the United States | 0 | - | 4.79 | 52,221 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,444 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,817 |
| New York City Geography | 0 | - | 4.42 | 32,989 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,319 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,590 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,055 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,023 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,901 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,371 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,167 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,968 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,743 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,117 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,490 |
| Europe Map Quiz | 0 | - | 5.00 | 4,740,048 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,721 |
| Famous Scottish People | 0 | - | 4.22 | 18,344 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,902 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,474 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,227 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,650 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,148 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,788 |
| Middle East A-Z | 0 | - | 4.47 | 45,873 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,308,082 |
| Africa Map Quiz | 0 | - | 5.00 | 2,108,033 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,152 |
| Australian Capitals | 0 | - | 4.92 | 62,620 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,448 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,282 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,345 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,500 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,106 |
| United States Country Quiz | 0 | - | 4.43 | 100,851 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,691 |
| Canada Country Quiz | 0 | - | 4.55 | 131,931 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,776 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,756 |
| Official European Union Languages | 0 | - | 4.97 | 237,348 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,147 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,986 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,361 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,442,774 |
| Asia Map Quiz | 0 | - | 4.99 | 909,166 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,733 |
| A Quiz About Islam | 0 | - | 4.31 | 48,271 |
| Countries That Don't Recognize Israel | 0 | - | 4.63 | 34,554 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,148 |
| Countries of Africa | 0 | - | 5.00 | 2,515,616 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,072 |
| African East Coast | 0 | - | 4.96 | 95,330 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,204 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,056 |
| Australia Map Quiz | 0 | - | 4.94 | 342,941 |
| Pixelated Americas Map | 0 | - | 4.39 | 46,908 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,910 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,398 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,232 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,502 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 744,321 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,664 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,210 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,842 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,677 |
| New England States | 0 | - | 4.51 | 59,733 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,578 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,926 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,475 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 55,748 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,736 |
| U.S. States by Borders | 0 | - | 4.63 | 35,142 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 183,353 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,309 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,553 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,048 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,392 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.70 | 32,849 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,471 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 74,960 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,249 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,479 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,448 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,480 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,221 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,046 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,686 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,141 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,226 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,698 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,393 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,564 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,867 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,359 |
