| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,664 |
| States of Mexico | 0 | - | 4.96 | 176,571 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,031 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,113 |
| States of Brazil | 0 | - | 4.97 | 88,438 |
| United States Map Quiz | 0 | - | 4.98 | 4,162,284 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,949 |
| Flags of North and South America | 0 | - | 4.99 | 373,933 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,025 |
| South America Map Quiz | 0 | - | 5.00 | 1,551,119 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,625 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,025,049 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,261 |
| Canada Provinces and Territories | 0 | - | 5.00 | 343,356 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 641,292 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,487 |
| Famous Germans | 0 | - | 4.50 | 55,470 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,693 |
| The Only American Country ... | 0 | - | 4.92 | 121,762 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,235 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,742 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,128 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,333 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,570 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,569 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,297 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,011 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,829 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,197 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,604 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,784 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,387 |
| Canada A-Z | 0 | - | 4.73 | 32,875 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,318 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,541 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,787 |
| History of Mexico | 0 | - | 4.58 | 15,325 |
| Mexico States Map Quiz | 0 | - | 4.84 | 104,920 |
| South America A-Z | 0 | - | 4.13 | 10,919 |
| Word Chain - South America | 0 | - | 4.51 | 23,924 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,209 |
| Central American Countries | 0 | - | 4.98 | 156,683 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 148,905 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,497 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,060 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,799 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,744 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,597 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,921 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,330 |
| Famous French People | 0 | - | 4.07 | 35,780 |
| Famous Australians by Description | 0 | - | 4.23 | 27,983 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,457 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,306 |
| South American Physical Geography | 0 | - | 4.58 | 18,364 |
| Pixelated United States Map | 0 | - | 4.88 | 94,406 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,867 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,924 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,069 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,628 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,601 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,223 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,535 |
| U.S. States By Population | 0 | - | 4.92 | 153,680 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,629 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,545 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,663 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,444 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,299 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,738 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,224 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,916 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,368 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,638 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,397 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,687 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,436 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,518 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,629 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,243 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,635 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,079 |
| Africa A-Z | 0 | - | 4.57 | 46,655 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,490 |
| Famous People from South America | 0 | - | 4.15 | 22,004 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,132 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,945 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,729 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,888 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,581 |
| Famous Canadians Quiz | 0 | - | 3.94 | 23,415 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,341 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,296 |
| Famous Russians | 0 | - | 4.16 | 23,856 |
| Famous Irish People | 0 | - | 4.05 | 46,016 |
| Famous Nordic People | 0 | - | 4.34 | 20,157 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,620 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,672 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 41,351 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,521 |
| Famous Chinese People | 0 | - | 4.09 | 11,886 |
| Belize Country Quiz | 0 | - | 4.85 | 21,007 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,708 |
| Famous Caribbean People | 0 | - | 4.37 | 12,630 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 24,067 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,239 |
| Territories of the United States | 0 | - | 4.80 | 52,448 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,726 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,617 |
| New York City Geography | 0 | - | 4.42 | 33,122 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,678 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,525 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 119,973 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,220 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,833 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,673 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,898 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,681 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,982 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,826 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,120 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,589 |
| Europe Map Quiz | 0 | - | 5.00 | 4,768,499 |
| European Geography By Letter - S #1 | 0 | - | 4.62 | 100,718 |
| Famous Scottish People | 0 | - | 4.22 | 18,409 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,207 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,785 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,467 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,971 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,418 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,099 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,974 |
| Middle East A-Z | 0 | - | 4.47 | 46,115 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,318,880 |
| Africa Map Quiz | 0 | - | 5.00 | 2,120,680 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,420 |
| Australian Capitals | 0 | - | 4.92 | 62,739 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 112,907 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,305 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,857 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,574 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,603 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,202 |
| United States Country Quiz | 0 | - | 4.43 | 101,659 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,927 |
| Canada Country Quiz | 0 | - | 4.54 | 132,610 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,297 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,273 |
| Official European Union Languages | 0 | - | 4.97 | 238,806 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,052 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,747 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,119 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,240 |
| Asia Map Quiz | 0 | - | 4.99 | 918,660 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,039 |
| A Quiz About Islam | 0 | - | 4.31 | 48,481 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 34,915 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 157,511 |
| Countries of Africa | 0 | - | 5.00 | 2,542,591 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,023 |
| African East Coast | 0 | - | 4.96 | 96,202 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,066 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,837 |
| Australia Map Quiz | 0 | - | 4.95 | 344,940 |
| Pixelated Americas Map | 0 | - | 4.39 | 47,228 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,485 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,914 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,379 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,593 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 747,760 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,732 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 209,726 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,220 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 59,938 |
| New England States | 0 | - | 4.51 | 59,828 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,868 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,029 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 82,881 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,081 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,984 |
| U.S. States by Borders | 0 | - | 4.61 | 35,359 |
| Save Americans by Guessing U.S. States | 0 | - | 4.63 | 186,218 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,526 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,121 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,258 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,726 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,089 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,741 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,268 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,413 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,732 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,030 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,960 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,456 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,694 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,048 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 46,956 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,354 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,651 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,717 |
