| States of Brazil | 0 | - | 4.98 | 86,178 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,758 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,310 |
| Countries Bordering Brazil | 0 | - | 4.96 | 130,888 |
| States of Mexico | 0 | - | 4.95 | 173,001 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,267 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,169 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,449 |
| Brazil Country Quiz | 0 | - | 4.52 | 100,993 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,248 |
| South America A-Z | 0 | - | 4.13 | 10,832 |
| Flags of North and South America | 0 | - | 4.99 | 365,350 |
| South American Physical Geography | 0 | - | 4.58 | 18,260 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,768 |
| South America Capitals Quiz | 0 | - | 5.00 | 476,743 |
| Famous Germans | 0 | - | 4.50 | 54,552 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,239 |
| The Only American Country ... | 0 | - | 4.92 | 120,647 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,246 |
| Uruguay Country Quiz | 0 | - | 4.83 | 31,325 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,142 |
| US States Quiz | 0 | - | 5.00 | 16,677,014 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,038 |
| Canada A-Z | 0 | - | 4.73 | 32,623 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,261 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,924 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 90,995 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,493 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,048 |
| Hispanic Last Names in the U.S. | 0 | - | 4.30 | 54,602 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,900 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,664 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,034 |
| Argentina Country Quiz | 0 | - | 4.53 | 57,030 |
| Brazil Cities Map Quiz | 0 | - | 4.62 | 36,351 |
| Chile Country Quiz | 0 | - | 4.75 | 39,689 |
| Peru Country Quiz | 0 | - | 4.54 | 48,245 |
| Name the U.S. National Parks | 0 | - | 4.85 | 57,357 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 742,720 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,504 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,020 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 239,922 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,503 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,476 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,516 |
| Famous Australians by Description | 0 | - | 4.23 | 27,409 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,038 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,038 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,291 |
| Which South American Country? | 0 | - | 4.69 | 51,690 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,756 |
| Pixelated United States Map | 0 | - | 4.89 | 93,275 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,265 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,701 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,259 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,369 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,112 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,564 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,195 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,256 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,468 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,737 |
| U.S. States By Population | 0 | - | 4.92 | 152,244 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,233 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,768 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,443 |
| US States with an Empty Map | 0 | - | 5.00 | 618,054 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,699 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,778 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 100,955 |
| U.S. States with the Most Immigrants | 0 | - | 4.84 | 81,854 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,226 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,420 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,522 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,770 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,951 |
| Africa A-Z | 0 | - | 4.57 | 46,342 |
| U.S. Geography by Letter - C | 0 | - | 4.26 | 73,298 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,260 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,263 |
| U.S. Geography by Letter - T | 0 | - | 4.27 | 48,956 |
| U.S. Geography by Letter - P | 0 | - | 4.34 | 47,339 |
| U.S. Geography by Letter - M | 0 | - | 4.13 | 52,562 |
| U.S. Geography by Letter - L | 0 | - | 4.03 | 40,312 |
| U.S. Geography by Letter - G | 0 | - | 4.12 | 38,564 |
| U.S. Geography By Letter - H | 0 | - | 4.38 | 39,278 |
| Guyana Country Quiz | 0 | - | 4.49 | 22,554 |
| Countries that Beat Brazil | 0 | - | 4.49 | 67,782 |
| Ecuador Country Quiz | 0 | - | 4.60 | 31,587 |
| Venezuela Country Quiz | 0 | - | 4.50 | 30,359 |
| Paraguay Country Quiz | 0 | - | 4.53 | 25,045 |
| Bolivia Country Quiz | 0 | - | 4.63 | 25,984 |
| Suriname Country Quiz | 0 | - | 4.60 | 19,646 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,776 |
| People on Money - United States | 0 | - | 4.31 | 63,195 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,421 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,775 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,543 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 90,928 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,505 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 525,979 |
| Famous Russians | 0 | - | 4.16 | 23,707 |
| Famous French People | 0 | - | 4.12 | 27,861 |
| Famous Irish People | 0 | - | 4.05 | 45,845 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,538 |
| Asian Cities A-Z by Clue | 0 | - | 4.53 | 32,819 |
| Famous Chinese People | 0 | - | 4.09 | 11,791 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,316 |
| Mexican Foods | 0 | - | 4.07 | 14,600 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,673 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,300 |
| European Geography By Letter - B #1 | 0 | - | 4.64 | 110,812 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,759 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,627 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,154 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,762 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,616 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,579 |
| European Geography By Letter - V | 0 | - | 4.43 | 91,986 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,233 |
| Europe Map Quiz | 0 | - | 5.00 | 4,726,952 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,546 |
| Famous Scottish People | 0 | - | 4.22 | 18,318 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,769 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,342 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,107 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,514 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,020 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 276,906 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,653 |
| Middle East A-Z | 0 | - | 4.46 | 45,743 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,303,261 |
| Africa Map Quiz | 0 | - | 5.00 | 2,102,577 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,371 |
| Australian Capitals | 0 | - | 4.92 | 62,584 |
| U.S. Geography by Letter - N | 0 | - | 3.79 | 52,092 |
| U.S. Geography by Letter - E | 0 | - | 3.73 | 48,162 |
| U.S. Geography by Letter - F | 0 | - | 3.86 | 44,420 |
| U.S. Geography by Letter - O | 0 | - | 3.43 | 33,773 |
| U.S. Geography by Letter - R | 0 | - | 4.15 | 30,234 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,754 |
| South American Cities on the Map | 0 | - | 4.57 | 35,223 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,272 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,229 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,453 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,060 |
| United States Country Quiz | 0 | - | 4.43 | 100,454 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,569 |
| Canada Country Quiz | 0 | - | 4.54 | 131,620 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,552 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,511 |
| Official European Union Languages | 0 | - | 4.97 | 236,329 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,592 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,803 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,156 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,436,931 |
| Asia Map Quiz | 0 | - | 4.99 | 905,631 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,590 |
| A Quiz About Islam | 0 | - | 4.31 | 48,176 |
| Countries That Don't Recognize Israel | 0 | - | 4.63 | 34,393 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,627 |
| Countries of Africa | 0 | - | 5.00 | 2,504,040 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,699 |
| African East Coast | 0 | - | 4.96 | 94,904 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,778 |
| Canada or Africa by Area | 0 | - | 4.77 | 18,022 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,715 |
| Australia Map Quiz | 0 | - | 4.94 | 342,207 |
| Mexico Country Quiz | 0 | - | 4.49 | 71,919 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,300 |
| History of Mexico | 0 | - | 4.58 | 15,217 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,592 |
| Cuba Country Quiz | 0 | - | 4.69 | 51,126 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,559 |
| Jamaica Country Quiz | 0 | - | 4.58 | 34,827 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,320 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,070 |
| Top U.S. Universities | 0 | - | 4.15 | 143,902 |
| Largest United States Airlines | 0 | - | 4.39 | 54,812 |
| United States Map Quiz | 0 | - | 4.98 | 4,139,469 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 207,653 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,703 |
| U.S. States by Governor | 0 | - | 4.43 | 17,971 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,552 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,524 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,545 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,177 |
| New England States | 0 | - | 4.51 | 59,695 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,619 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,344 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,414 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,872 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,252 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,010 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,252 |
| U.S. States by Borders | 0 | - | 4.63 | 35,042 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,206 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,081 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,546 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,315 |
