| States of Brazil | 0 | - | 4.98 | 86,305 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,894 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,361 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,025 |
| States of Mexico | 0 | - | 4.95 | 173,229 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,299 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,184 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,462 |
| Brazil Country Quiz | 0 | - | 4.52 | 101,047 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,268 |
| South America A-Z | 0 | - | 4.13 | 10,835 |
| Flags of North and South America | 0 | - | 4.99 | 366,581 |
| South American Physical Geography | 0 | - | 4.58 | 18,267 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,817 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,052 |
| Famous Germans | 0 | - | 4.50 | 54,594 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,299 |
| The Only American Country ... | 0 | - | 4.92 | 120,713 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,303 |
| Uruguay Country Quiz | 0 | - | 4.83 | 31,341 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,264 |
| US States Quiz | 0 | - | 5.00 | 16,691,080 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,176 |
| Canada A-Z | 0 | - | 4.73 | 32,639 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,295 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,970 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,042 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,520 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,070 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,609 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,905 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,740 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,105 |
| Argentina Country Quiz | 0 | - | 4.53 | 57,070 |
| Brazil Cities Map Quiz | 0 | - | 4.62 | 36,360 |
| Chile Country Quiz | 0 | - | 4.75 | 39,702 |
| Peru Country Quiz | 0 | - | 4.54 | 48,284 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,681 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 742,997 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,605 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,098 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,586 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,751 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,505 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,586 |
| Famous Australians by Description | 0 | - | 4.23 | 27,521 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,059 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,067 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,382 |
| Which South American Country? | 0 | - | 4.69 | 51,707 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,789 |
| Pixelated United States Map | 0 | - | 4.89 | 93,428 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,393 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,803 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,350 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,488 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,193 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,670 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,305 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,353 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,580 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,848 |
| U.S. States By Population | 0 | - | 4.92 | 152,313 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,341 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,825 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,523 |
| US States with an Empty Map | 0 | - | 5.00 | 618,504 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,737 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,843 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,038 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,908 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,301 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,437 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,639 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,865 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,959 |
| Africa A-Z | 0 | - | 4.57 | 46,356 |
| U.S. Geography by Letter - C | 0 | - | 4.26 | 73,331 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,299 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,294 |
| U.S. Geography by Letter - T | 0 | - | 4.27 | 48,983 |
| U.S. Geography by Letter - P | 0 | - | 4.34 | 47,372 |
| U.S. Geography by Letter - M | 0 | - | 4.13 | 52,582 |
| U.S. Geography by Letter - L | 0 | - | 4.03 | 40,341 |
| U.S. Geography by Letter - G | 0 | - | 4.12 | 38,589 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,314 |
| Guyana Country Quiz | 0 | - | 4.49 | 22,574 |
| Countries that Beat Brazil | 0 | - | 4.49 | 67,848 |
| Ecuador Country Quiz | 0 | - | 4.60 | 31,594 |
| Venezuela Country Quiz | 0 | - | 4.50 | 30,379 |
| Paraguay Country Quiz | 0 | - | 4.53 | 25,071 |
| Bolivia Country Quiz | 0 | - | 4.63 | 25,999 |
| Suriname Country Quiz | 0 | - | 4.60 | 19,658 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,784 |
| People on Money - United States | 0 | - | 4.31 | 63,200 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,579 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,824 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,607 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 90,997 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,526 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,200 |
| Famous Russians | 0 | - | 4.16 | 23,719 |
| Famous French People | 0 | - | 4.12 | 27,913 |
| Famous Irish People | 0 | - | 4.05 | 45,852 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,540 |
| Asian Cities A-Z by Clue | 0 | - | 4.53 | 33,930 |
| Famous Chinese People | 0 | - | 4.09 | 11,797 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,442 |
| Mexican Foods | 0 | - | 4.07 | 14,607 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,712 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,344 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,848 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,779 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,655 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,181 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,825 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,637 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,600 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,003 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,271 |
| Europe Map Quiz | 0 | - | 5.00 | 4,729,601 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,569 |
| Famous Scottish People | 0 | - | 4.22 | 18,326 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,811 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,373 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,143 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,548 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,052 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,043 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,691 |
| Middle East A-Z | 0 | - | 4.47 | 45,768 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,304,237 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,621 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,952 |
| Australian Capitals | 0 | - | 4.92 | 62,589 |
| U.S. Geography by Letter - N | 0 | - | 3.79 | 52,138 |
| U.S. Geography by Letter - E | 0 | - | 3.73 | 48,182 |
| U.S. Geography by Letter - F | 0 | - | 3.86 | 44,438 |
| U.S. Geography by Letter - O | 0 | - | 3.43 | 33,788 |
| U.S. Geography by Letter - R | 0 | - | 4.15 | 30,257 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,754 |
| South American Cities on the Map | 0 | - | 4.57 | 35,238 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,274 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,251 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,465 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,072 |
| United States Country Quiz | 0 | - | 4.43 | 100,535 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,588 |
| Canada Country Quiz | 0 | - | 4.54 | 131,674 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,582 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,554 |
| Official European Union Languages | 0 | - | 4.97 | 236,449 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,652 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,033 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,192 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,289 |
| Asia Map Quiz | 0 | - | 4.99 | 906,567 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,635 |
| A Quiz About Islam | 0 | - | 4.31 | 48,191 |
| Countries That Don't Recognize Israel | 0 | - | 4.63 | 34,418 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,729 |
| Countries of Africa | 0 | - | 5.00 | 2,506,275 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,772 |
| African East Coast | 0 | - | 4.96 | 94,993 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,882 |
| Canada or Africa by Area | 0 | - | 4.77 | 18,051 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,757 |
| Australia Map Quiz | 0 | - | 4.94 | 342,366 |
| Mexico Country Quiz | 0 | - | 4.49 | 71,956 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,309 |
| History of Mexico | 0 | - | 4.58 | 15,227 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,598 |
| Cuba Country Quiz | 0 | - | 4.69 | 51,146 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,574 |
| Jamaica Country Quiz | 0 | - | 4.58 | 34,852 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,331 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,084 |
| Top U.S. Universities | 0 | - | 4.15 | 144,014 |
| Largest United States Airlines | 0 | - | 4.39 | 54,826 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,846 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 207,778 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,723 |
| U.S. States by Governor | 0 | - | 4.43 | 17,978 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,568 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,542 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,576 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,191 |
| New England States | 0 | - | 4.51 | 59,704 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,643 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,385 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,462 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,880 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,268 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,018 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,295 |
| U.S. States by Borders | 0 | - | 4.63 | 35,057 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,221 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,113 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,562 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,363 |
