| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,961 |
| States of Brazil | 0 | - | 4.98 | 86,382 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,314 |
| States of Mexico | 0 | - | 4.95 | 173,334 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,383 |
| South American Geography Quiz #2 | 0 | - | 4.62 | 39,193 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,470 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,066 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,281 |
| Flags of North and South America | 0 | - | 4.99 | 367,185 |
| South American Physical Geography | 0 | - | 4.58 | 18,270 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,238 |
| Venezuela Country Quiz | 0 | - | 4.50 | 30,391 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,848 |
| Famous Germans | 0 | - | 4.50 | 54,612 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,478 |
| The Only American Country ... | 0 | - | 4.92 | 120,757 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,339 |
| Uruguay Country Quiz | 0 | - | 4.83 | 31,353 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,325 |
| US States Quiz | 0 | - | 5.00 | 16,700,471 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,256 |
| Canada A-Z | 0 | - | 4.73 | 32,647 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,330 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,997 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,072 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,094 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,086 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,535 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,076 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,613 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,906 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,786 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,447 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,156 |
| Argentina Country Quiz | 0 | - | 4.53 | 57,087 |
| Brazil Country Quiz | 0 | - | 4.52 | 101,086 |
| Brazil Cities Map Quiz | 0 | - | 4.62 | 36,365 |
| Chile Country Quiz | 0 | - | 4.75 | 39,723 |
| Peru Country Quiz | 0 | - | 4.54 | 48,302 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,949 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,197 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,660 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,150 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,907 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,975 |
| Pixelated United States Map | 0 | - | 4.89 | 93,475 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,460 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,851 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,526 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,622 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,253 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,730 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,356 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,412 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,668 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,905 |
| U.S. States By Population | 0 | - | 4.92 | 152,364 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,403 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,865 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,764 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,879 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,358 |
| Famous Australians by Description | 0 | - | 4.23 | 27,593 |
| Which South American Country? | 0 | - | 4.69 | 51,721 |
| Countries that Beat Brazil | 0 | - | 4.49 | 67,883 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,805 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,418 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,573 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,582 |
| US States with an Empty Map | 0 | - | 5.00 | 618,823 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,094 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,931 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,450 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,714 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,937 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,962 |
| Africa A-Z | 0 | - | 4.57 | 46,370 |
| U.S. Geography by Letter - C | 0 | - | 4.26 | 73,345 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,318 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,314 |
| U.S. Geography by Letter - T | 0 | - | 4.27 | 49,004 |
| U.S. Geography by Letter - P | 0 | - | 4.34 | 47,388 |
| U.S. Geography by Letter - M | 0 | - | 4.13 | 52,603 |
| U.S. Geography by Letter - L | 0 | - | 4.03 | 40,361 |
| U.S. Geography by Letter - G | 0 | - | 4.12 | 38,605 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,338 |
| Ecuador Country Quiz | 0 | - | 4.60 | 31,606 |
| Paraguay Country Quiz | 0 | - | 4.53 | 25,080 |
| Bolivia Country Quiz | 0 | - | 4.63 | 26,029 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,792 |
| People on Money - United States | 0 | - | 4.31 | 63,205 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,701 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,863 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,658 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,065 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,551 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,345 |
| Famous Russians | 0 | - | 4.16 | 23,728 |
| Famous French People | 0 | - | 4.12 | 27,945 |
| Famous Irish People | 0 | - | 4.05 | 45,855 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,544 |
| Asian Cities A-Z by Clue | 0 | - | 4.53 | 34,208 |
| Famous Chinese People | 0 | - | 4.09 | 11,799 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,529 |
| Mexican Foods | 0 | - | 4.07 | 14,610 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,741 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,405 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,904 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,848 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,709 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,216 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,887 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,670 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,627 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,022 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,305 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,216 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,595 |
| Famous Scottish People | 0 | - | 4.22 | 18,326 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,827 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,394 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,162 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,562 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,074 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,099 |
| Middle East A-Z | 0 | - | 4.47 | 45,787 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,304,813 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,275 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,295 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| U.S. Geography by Letter - N | 0 | - | 3.79 | 52,160 |
| U.S. Geography by Letter - E | 0 | - | 3.73 | 48,196 |
| U.S. Geography by Letter - F | 0 | - | 3.86 | 44,447 |
| U.S. Geography by Letter - O | 0 | - | 3.43 | 33,794 |
| U.S. Geography by Letter - R | 0 | - | 4.15 | 30,269 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,754 |
| Mexico Country Quiz | 0 | - | 4.49 | 71,974 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,314 |
| History of Mexico | 0 | - | 4.58 | 15,230 |
| South American Cities on the Map | 0 | - | 4.57 | 35,242 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,275 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,096 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,263 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,797 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,476 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,076 |
| United States Country Quiz | 0 | - | 4.43 | 100,582 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,601 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 207,859 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,736 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,589 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,196 |
| New England States | 0 | - | 4.51 | 59,707 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,473 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,883 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,314 |
| U.S. States by Borders | 0 | - | 4.63 | 35,069 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,238 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,137 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 43,991 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,038 |
| Canada Country Quiz | 0 | - | 4.54 | 131,710 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,609 |
| Most-Visited Countries by Canadians | 0 | - | 4.77 | 39,117 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,580 |
| Official European Union Languages | 0 | - | 4.97 | 236,521 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,700 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,218 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,615 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,902 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,277 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,491 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,167 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,917 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,294 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,509 |
| European Geography A-Z | 0 | - | 4.28 | 48,999 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,198 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,218 |
| Asian Geography By Letter - S | 0 | - | 4.18 | 55,919 |
| Asian Geography by Letter - D | 0 | - | 4.27 | 51,697 |
| Asian Geography by Letter - G | 0 | - | 4.35 | 50,992 |
| Asian Geography by Letter - I | 0 | - | 4.36 | 67,515 |
| Asian Geography by Letter - C | 0 | - | 4.32 | 64,500 |
| Asian Geography by Letter - N | 0 | - | 4.33 | 50,014 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,455 |
| Asia Map Quiz | 0 | - | 4.99 | 906,992 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,508 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,652 |
| A Quiz About Islam | 0 | - | 4.31 | 48,206 |
| Countries That Don't Recognize Israel | 0 | - | 4.63 | 34,443 |
| Japanese Companies | 0 | - | 4.28 | 34,084 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,803 |
| Georgia ... or Georgia? | 0 | - | 4.69 | 76,418 |
| Countries of Africa | 0 | - | 5.00 | 2,507,783 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,433 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,315 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,813 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,622 |
