| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,959 |
| States of Mexico | 0 | - | 4.96 | 178,702 |
| Countries of South America with an Empty Map | 0 | - | 4.95 | 105,603 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.93 | 55,012 |
| States of Brazil | 0 | - | 4.98 | 90,023 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,366 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,968 |
| Flags of North and South America | 0 | - | 4.99 | 378,064 |
| Latin American Countries Map Quiz | 0 | - | 4.98 | 130,849 |
| South America Map Quiz | 0 | - | 5.00 | 1,558,272 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,783 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,033,149 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,592 |
| Canada Provinces and Territories | 0 | - | 5.00 | 347,034 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 645,292 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,127 |
| Famous Germans | 0 | - | 4.50 | 55,862 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,530 |
| The Only American Country ... | 0 | - | 4.92 | 122,339 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,767 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,440 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,942 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 65,294 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,955 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 76,052 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 75,184 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,326 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,085 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,060 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,157 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,105 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,801 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,872 |
| Canada A-Z | 0 | - | 4.73 | 32,992 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,942 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,892 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,878 |
| History of Mexico | 0 | - | 4.52 | 15,374 |
| Mexico States Map Quiz | 0 | - | 4.85 | 105,769 |
| South America A-Z | 0 | - | 4.15 | 10,953 |
| Word Chain - South America | 0 | - | 4.51 | 24,018 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,717 |
| Central American Countries | 0 | - | 4.98 | 157,524 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,690 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 151,021 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,646 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,587 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,549 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,730 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 246,980 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,159 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,809 |
| Famous French People | 0 | - | 4.05 | 36,155 |
| Famous Australians by Description | 0 | - | 4.23 | 28,185 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,664 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 95,652 |
| South American Physical Geography | 0 | - | 4.58 | 18,412 |
| Pixelated United States Map | 0 | - | 4.89 | 94,919 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,718 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,577 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,175 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,424 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,448 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,502 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,541 |
| U.S. States By Population | 0 | - | 4.92 | 154,247 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,362 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,971 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,162 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,970 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,593 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,199 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 161,167 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,313 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,766 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,872 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,715 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 68,060 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,664 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,635 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,778 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,993 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,679 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,158 |
| Famous People from South America | 0 | - | 4.15 | 22,134 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,158 |
| American Legal Vocabulary | 0 | - | 4.40 | 34,044 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,886 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,573 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,103 |
| Famous Canadians Quiz | 0 | - | 3.94 | 23,431 |
| Countries that Beat Canada | 0 | - | 4.90 | 99,105 |
| Famous Russians | 0 | - | 4.16 | 23,925 |
| Famous Irish People | 0 | - | 4.05 | 46,078 |
| Famous Nordic People | 0 | - | 4.34 | 20,335 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,648 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,178 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 43,080 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,968 |
| Famous Chinese People | 0 | - | 4.09 | 11,933 |
| Africa A-Z | 0 | - | 4.57 | 46,796 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,627 |
| Belize Country Quiz | 0 | - | 4.85 | 21,112 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,804 |
| Famous Caribbean People | 0 | - | 4.37 | 12,668 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 24,174 |
| Territories of the United States | 0 | - | 4.80 | 52,665 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,924 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 176,232 |
| New York City Geography | 0 | - | 4.43 | 33,201 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,930 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,342 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,740 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,248 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,701 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,262 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,774 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,277 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,884 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,164 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,779 |
| Europe Map Quiz | 0 | - | 5.00 | 4,792,816 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,560 |
| Famous Scottish People | 0 | - | 4.22 | 18,443 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,522 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 66,136 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,712 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,270 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,710 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,379 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,378 |
| Middle East A-Z | 0 | - | 4.47 | 46,270 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,327,469 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,248 |
| Australian Capitals | 0 | - | 4.92 | 62,861 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,314 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,796 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,695 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,294 |
| United States Country Quiz | 0 | - | 4.43 | 102,330 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,097 |
| Canada Country Quiz | 0 | - | 4.55 | 133,162 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,679 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,851 |
| Official European Union Languages | 0 | - | 4.97 | 240,353 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,804 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,365 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,434 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,335 |
| Asia Map Quiz | 0 | - | 4.99 | 926,617 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,255 |
| A Quiz About Islam | 0 | - | 4.32 | 48,661 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 35,228 |
| Africa Map Quiz | 0 | - | 5.00 | 2,130,598 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 158,757 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,588 |
| Australia Map Quiz | 0 | - | 4.95 | 346,468 |
| Pixelated Americas Map | 0 | - | 4.39 | 47,494 |
| U.S. Geography by Letter - B | 0 | - | 4.54 | 70,142 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 58,537 |
| South American Geography Quiz #1 | 0 | - | 4.63 | 32,930 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 750,293 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,779 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,716 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,486 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,158 |
| New England States | 0 | - | 4.51 | 59,913 |
| U.S. States by Land Area | 0 | - | 4.55 | 53,111 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,136 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,215 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,333 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,180 |
| U.S. States by Borders | 0 | - | 4.61 | 35,513 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,713 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,392 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,479 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,980 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,267 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,850 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,524 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,539 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,901 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,450 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,336 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,617 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 83,158 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,326 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,446 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,306 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,980 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,184 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,558 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,392 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,644 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,338 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,112 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,693 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,336 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,720 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,688 |
