| States of Mexico | 0 | - | 4.95 | 173,893 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,990 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,866 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,078 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,331 |
| Belize Country Quiz | 0 | - | 4.85 | 20,837 |
| US States Quiz | 0 | - | 5.00 | 16,735,649 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,606 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,165 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,512 |
| States of Brazil | 0 | - | 4.98 | 86,715 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,354 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,817 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,431 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,506 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,587 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,753 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,126 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,422 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,867 |
| Pixelated United States Map | 0 | - | 4.89 | 93,641 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,699 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,014 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,493 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,947 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,561 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,609 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,920 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,165 |
| U.S. States By Population | 0 | - | 4.92 | 152,534 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,605 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,991 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,729 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,845 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,023 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,524 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,178 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,340 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,609 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,830 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,783 |
| US States with an Empty Map | 0 | - | 5.00 | 619,955 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,213 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,045 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 94,993 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,180 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,118 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,047 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,864 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,275 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,622 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,833 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,481 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,571 |
| Animals of Australia | 0 | - | 4.52 | 42,191 |
| Flags of North and South America | 0 | - | 4.99 | 368,645 |
| South America Map Quiz | 0 | - | 5.00 | 1,542,531 |
| South American Physical Geography | 0 | - | 4.58 | 18,290 |
| Costa Rica Country Quiz | 0 | - | 4.75 | 31,980 |
| Cuba Country Quiz | 0 | - | 4.69 | 51,252 |
| Jamaica Country Quiz | 0 | - | 4.58 | 34,900 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,414 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,250 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,460 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,250 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 32,554 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,593 |
| The Only American Country ... | 0 | - | 4.92 | 120,914 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,468 |
| El Salvador Country Quiz | 0 | - | 4.62 | 31,530 |
| Guatemala Country Quiz | 0 | - | 4.63 | 25,263 |
| Honduras Country Quiz | 0 | - | 4.52 | 23,739 |
| Panama Country Quiz | 0 | - | 4.61 | 25,644 |
| Nicaragua Country Quiz | 0 | - | 4.62 | 26,408 |
| Antigua and Barbuda Country Quiz | 0 | - | 4.66 | 21,955 |
| Dominican Republic Country Quiz | 0 | - | 4.61 | 23,259 |
| Barbados Country Quiz | 0 | - | 4.78 | 19,668 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,341 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,494 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,100 |
| United States Country Quiz | 0 | - | 4.43 | 100,795 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,674 |
| Canada Country Quiz | 0 | - | 4.55 | 131,891 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,733 |
| Canada A-Z | 0 | - | 4.73 | 32,687 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,716 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,261 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,698 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,552 |
| African Great Lakes | 0 | - | 4.82 | 65,406 |
| Largest Land Animals of Africa | 0 | - | 4.36 | 12,704 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 78,231 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,217 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,883 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,382 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,913 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,226 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,494 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,314 |
| Argentina Country Quiz | 0 | - | 4.53 | 57,190 |
| Brazil Country Quiz | 0 | - | 4.52 | 101,253 |
| Brazil Cities Map Quiz | 0 | - | 4.62 | 36,415 |
| Chile Country Quiz | 0 | - | 4.75 | 39,805 |
| Ecuador Country Quiz | 0 | - | 4.60 | 31,668 |
| Peru Country Quiz | 0 | - | 4.54 | 48,390 |
| Central American Countries | 0 | - | 4.98 | 155,253 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 146,329 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,277 |
| Saint Kitts and Nevis Country Quiz | 0 | - | 4.57 | 18,650 |
| Trinidad and Tobago Country Quiz | 0 | - | 4.61 | 22,046 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,597 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,666 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,941 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,491 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,865 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,000 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,655 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,125 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,762 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,995 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,787 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,654 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,218 |
| New England States | 0 | - | 4.51 | 59,723 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,541 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,909 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,429 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 55,717 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,712 |
| U.S. States by Borders | 0 | - | 4.63 | 35,126 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,281 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,208 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,040 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,169 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,558 |
| Most-Visited Countries by Canadians | 0 | - | 4.77 | 39,140 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,844 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 137,953 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,964 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,562 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,205 |
| Georgia ... or Georgia? | 0 | - | 4.69 | 76,502 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,502 |
| Canada or Africa by Area | 0 | - | 4.77 | 18,129 |
| Which South American Country? | 0 | - | 4.69 | 51,763 |
| Countries that Beat Brazil | 0 | - | 4.49 | 68,036 |
| Top U.S. Universities | 0 | - | 4.15 | 144,267 |
| Largest United States Airlines | 0 | - | 4.39 | 54,877 |
| Lakes in the United States by Clue | 0 | - | 4.31 | 19,187 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,203 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,228 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.50 | 41,051 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,424 |
| U.S. States by Governor | 0 | - | 4.43 | 17,995 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,598 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,572 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,769 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,709 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,501 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,317 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,061 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.46 | 53,217 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 32,432 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 76,579 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 34,950 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 48,768 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,633 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,472 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,324 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,507 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,794 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,513 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,131 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,478 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,644 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 173,063 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,413 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,685 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,599 |
| U.S. States with the Fewest Borders | 0 | - | 4.77 | 113,142 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,243 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,679,978 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,674 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,934 |
| O Canada Lyrics | 0 | - | 4.47 | 50,819 |
| NHL Hockey Teams in Canada | 0 | - | 4.35 | 34,610 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,701 |
| Animal Populations of Countries | 0 | - | 4.51 | 43,671 |
| Animals by Skeleton Image | 0 | - | 4.80 | 46,085 |
| Animals by Close-up Image | 0 | - | 4.42 | 217,092 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,330 |
| Extinct Animals by Picture | 0 | - | 4.49 | 34,985 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,267 |
| Top 15 Countries with the Most Cows | 0 | - | 4.64 | 92,822 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 73,652 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,615 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,604 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,281 |
| U.S. Geography by Letter - P | 0 | - | 4.36 | 47,703 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 52,888 |
