| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,111 |
| States of Brazil | 0 | - | 4.97 | 88,436 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,780 |
| States of Mexico | 0 | - | 4.96 | 176,567 |
| Brazil States Map Quiz | 0 | - | 4.85 | 48,207 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,379 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,593 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,829 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,635 |
| South America A-Z | 0 | - | 4.13 | 10,919 |
| Flags of North and South America | 0 | - | 4.99 | 373,926 |
| South American Physical Geography | 0 | - | 4.58 | 18,364 |
| South America Capitals Quiz | 0 | - | 5.00 | 482,202 |
| Venezuela Country Quiz | 0 | - | 4.51 | 30,637 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,624 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,487 |
| Famous Germans | 0 | - | 4.50 | 55,468 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,687 |
| The Only American Country ... | 0 | - | 4.92 | 121,762 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,234 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,658 |
| US States Quiz | 0 | - | 5.00 | 16,904,725 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,385 |
| Canada A-Z | 0 | - | 4.73 | 32,873 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,603 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,457 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,301 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,318 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,483 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,914 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,785 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,949 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,629 |
| Mexico States Map Quiz | 0 | - | 4.84 | 104,917 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 130,680 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,030 |
| Argentina Country Quiz | 0 | - | 4.53 | 57,566 |
| Brazil Country Quiz | 0 | - | 4.52 | 101,941 |
| Brazil Cities Map Quiz | 0 | - | 4.62 | 36,683 |
| Chile Country Quiz | 0 | - | 4.77 | 40,108 |
| Ecuador Country Quiz | 0 | - | 4.60 | 31,898 |
| Peru Country Quiz | 0 | - | 4.54 | 48,722 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,059 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 747,756 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,797 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,742 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,593 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 332,814 |
| Pixelated United States Map | 0 | - | 4.87 | 94,405 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,867 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,922 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,920 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,328 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,991 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,067 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,627 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,600 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,220 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,533 |
| U.S. States By Population | 0 | - | 4.92 | 153,679 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,628 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,544 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,298 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,738 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,436 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,518 |
| Famous French People | 0 | - | 4.07 | 35,774 |
| Famous Australians by Description | 0 | - | 4.23 | 27,982 |
| Which South American Country? | 0 | - | 4.69 | 51,977 |
| Countries that Beat Brazil | 0 | - | 4.49 | 68,772 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,212 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,607 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,726 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,777 |
| US States with an Empty Map | 0 | - | 5.00 | 625,591 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,887 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,581 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,629 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,272 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,403 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,079 |
| Africa A-Z | 0 | - | 4.57 | 46,655 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,139 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,156 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,144 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,841 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 53,975 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,361 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,199 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,366 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,214 |
| Guyana Country Quiz | 0 | - | 4.50 | 22,832 |
| Paraguay Country Quiz | 0 | - | 4.54 | 25,326 |
| Bolivia Country Quiz | 0 | - | 4.63 | 26,289 |
| Suriname Country Quiz | 0 | - | 4.61 | 19,844 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,945 |
| People on Money - United States | 0 | - | 4.31 | 63,363 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,324 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,192 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,857 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,267 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,967 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,235 |
| Famous Russians | 0 | - | 4.16 | 23,856 |
| Famous Irish People | 0 | - | 4.05 | 46,015 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,620 |
| Asian Cities A-Z by Clue | 0 | - | 4.50 | 41,304 |
| Famous Chinese People | 0 | - | 4.09 | 11,886 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,488 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,261 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,875 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,523 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 119,970 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,219 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,831 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,672 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,895 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,680 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,981 |
| 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 | 82,587 |
| Europe Map Quiz | 0 | - | 5.00 | 4,768,453 |
| European Geography By Letter - S #1 | 0 | - | 4.62 | 100,717 |
| Famous Scottish People | 0 | - | 4.22 | 18,409 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,205 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,783 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,467 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,970 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,418 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,518 |
| Middle East A-Z | 0 | - | 4.47 | 46,113 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,318,844 |
| Africa Map Quiz | 0 | - | 5.00 | 2,120,635 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,406 |
| Australian Capitals | 0 | - | 4.92 | 62,739 |
| U.S. Geography by Letter - N | 0 | - | 3.80 | 52,783 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 48,811 |
| U.S. Geography by Letter - F | 0 | - | 3.84 | 45,073 |
| U.S. Geography by Letter - O | 0 | - | 3.52 | 41,532 |
| U.S. Geography by Letter - R | 0 | - | 4.18 | 31,074 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,784 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,498 |
| History of Mexico | 0 | - | 4.58 | 15,325 |
| South American Cities on the Map | 0 | - | 4.53 | 35,451 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,305 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,497 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,573 |
| United States Map Quiz | 0 | - | 4.98 | 4,162,262 |
| 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 | 101,658 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,927 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 209,723 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,016 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,937 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,382 |
| New England States | 0 | - | 4.51 | 59,828 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,867 |
| 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 |
| U.S. States by Borders | 0 | - | 4.61 | 35,359 |
| 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 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,605 |
| Canada Country Quiz | 0 | - | 4.54 | 132,610 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,296 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,272 |
| Official European Union Languages | 0 | - | 4.97 | 238,800 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,049 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,925 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,296 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,187 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,877 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,661 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,298 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,839 |
| European Geography by Letter - W | 0 | - | 4.20 | 83,010 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,286 |
| European Geography A-Z | 0 | - | 4.29 | 49,344 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,744 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,119 |
| Asian Geography By Letter - S | 0 | - | 4.17 | 56,126 |
| Asian Geography by Letter - D | 0 | - | 4.27 | 51,975 |
| Asian Geography by Letter - G | 0 | - | 4.36 | 51,259 |
| Asian Geography by Letter - I | 0 | - | 4.37 | 67,838 |
| Asian Geography by Letter - C | 0 | - | 4.32 | 64,787 |
| Asian Geography by Letter - N | 0 | - | 4.34 | 50,284 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,230 |
| Asia Map Quiz | 0 | - | 4.99 | 918,644 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,819 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,038 |
| A Quiz About Islam | 0 | - | 4.31 | 48,481 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 34,913 |
| Japanese Companies | 0 | - | 4.28 | 34,245 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 157,508 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,840 |
| Countries of Africa | 0 | - | 5.00 | 2,542,505 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,053 |
