| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,971 |
| States of Brazil | 0 | - | 4.98 | 86,390 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,326 |
| States of Mexico | 0 | - | 4.95 | 173,351 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,386 |
| South American Geography Quiz #2 | 0 | - | 4.62 | 39,197 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,471 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,069 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,284 |
| Flags of North and South America | 0 | - | 4.99 | 367,270 |
| South American Physical Geography | 0 | - | 4.58 | 18,271 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,273 |
| Venezuela Country Quiz | 0 | - | 4.50 | 30,391 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,854 |
| Famous Germans | 0 | - | 4.50 | 54,619 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,525 |
| The Only American Country ... | 0 | - | 4.92 | 120,763 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,343 |
| Uruguay Country Quiz | 0 | - | 4.83 | 31,354 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,337 |
| US States Quiz | 0 | - | 5.00 | 16,701,656 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,278 |
| Canada A-Z | 0 | - | 4.73 | 32,650 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,336 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,003 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,074 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,096 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,090 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,537 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,079 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,614 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,906 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,800 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,456 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,157 |
| Argentina Country Quiz | 0 | - | 4.53 | 57,088 |
| Brazil Country Quiz | 0 | - | 4.52 | 101,090 |
| Brazil Cities Map Quiz | 0 | - | 4.62 | 36,365 |
| Chile Country Quiz | 0 | - | 4.75 | 39,724 |
| Peru Country Quiz | 0 | - | 4.54 | 48,304 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,998 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,217 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,664 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,167 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,939 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,035 |
| Pixelated United States Map | 0 | - | 4.89 | 93,486 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,473 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,858 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,526 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,624 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,259 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,738 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,367 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,423 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,676 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,918 |
| U.S. States By Population | 0 | - | 4.92 | 152,374 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,407 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,867 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,766 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,889 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,362 |
| Famous Australians by Description | 0 | - | 4.23 | 27,608 |
| Which South American Country? | 0 | - | 4.69 | 51,723 |
| Countries that Beat Brazil | 0 | - | 4.49 | 67,888 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,808 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,422 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,584 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,592 |
| US States with an Empty Map | 0 | - | 5.00 | 618,861 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,100 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,939 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,450 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,719 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,950 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,962 |
| Africa A-Z | 0 | - | 4.57 | 46,372 |
| U.S. Geography by Letter - C | 0 | - | 4.26 | 73,347 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,327 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,321 |
| U.S. Geography by Letter - T | 0 | - | 4.27 | 49,008 |
| U.S. Geography by Letter - P | 0 | - | 4.34 | 47,394 |
| U.S. Geography by Letter - M | 0 | - | 4.13 | 52,607 |
| U.S. Geography by Letter - L | 0 | - | 4.03 | 40,363 |
| U.S. Geography by Letter - G | 0 | - | 4.12 | 38,608 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,341 |
| Ecuador Country Quiz | 0 | - | 4.60 | 31,606 |
| Paraguay Country Quiz | 0 | - | 4.53 | 25,081 |
| Bolivia Country Quiz | 0 | - | 4.63 | 26,029 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,793 |
| People on Money - United States | 0 | - | 4.31 | 63,206 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,722 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,875 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,662 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,068 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,553 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,358 |
| Famous Russians | 0 | - | 4.16 | 23,728 |
| Famous French People | 0 | - | 4.12 | 27,950 |
| Famous Irish People | 0 | - | 4.05 | 45,855 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,545 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 34,245 |
| Famous Chinese People | 0 | - | 4.09 | 11,800 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,538 |
| Mexican Foods | 0 | - | 4.07 | 14,610 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,745 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,417 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,917 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,866 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,723 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,226 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,906 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,679 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,635 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,029 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,314 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,489 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,605 |
| Famous Scottish People | 0 | - | 4.22 | 18,326 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,833 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,396 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,165 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,567 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,078 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,108 |
| Middle East A-Z | 0 | - | 4.47 | 45,789 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,304,915 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,385 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,332 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| U.S. Geography by Letter - N | 0 | - | 3.79 | 52,163 |
| U.S. Geography by Letter - E | 0 | - | 3.73 | 48,199 |
| U.S. Geography by Letter - F | 0 | - | 3.86 | 44,448 |
| U.S. Geography by Letter - O | 0 | - | 3.43 | 33,796 |
| U.S. Geography by Letter - R | 0 | - | 4.15 | 30,271 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,755 |
| Mexico Country Quiz | 0 | - | 4.49 | 71,981 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,314 |
| History of Mexico | 0 | - | 4.58 | 15,231 |
| South American Cities on the Map | 0 | - | 4.57 | 35,244 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,275 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,100 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,264 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,950 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,477 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,079 |
| United States Country Quiz | 0 | - | 4.43 | 100,585 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,603 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 207,873 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,738 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,594 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,197 |
| New England States | 0 | - | 4.51 | 59,707 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,475 |
| 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 | 82,323 |
| U.S. States by Borders | 0 | - | 4.63 | 35,072 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,243 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,140 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 43,995 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,044 |
| Canada Country Quiz | 0 | - | 4.54 | 131,719 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,611 |
| Most-Visited Countries by Canadians | 0 | - | 4.77 | 39,118 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,582 |
| Official European Union Languages | 0 | - | 4.97 | 236,535 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,704 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,225 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,672 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,911 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,288 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,500 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,177 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,927 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,300 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,517 |
| European Geography A-Z | 0 | - | 4.28 | 49,005 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,209 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,226 |
| Asian Geography By Letter - S | 0 | - | 4.18 | 55,921 |
| Asian Geography by Letter - D | 0 | - | 4.27 | 51,702 |
| Asian Geography by Letter - G | 0 | - | 4.35 | 50,994 |
| Asian Geography by Letter - I | 0 | - | 4.36 | 67,518 |
| Asian Geography by Letter - C | 0 | - | 4.32 | 64,501 |
| Asian Geography by Letter - N | 0 | - | 4.33 | 50,016 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,517 |
| Asia Map Quiz | 0 | - | 4.99 | 907,057 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,512 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,655 |
| A Quiz About Islam | 0 | - | 4.31 | 48,209 |
| Countries That Don't Recognize Israel | 0 | - | 4.63 | 34,446 |
| Japanese Companies | 0 | - | 4.28 | 34,085 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,807 |
| Georgia ... or Georgia? | 0 | - | 4.69 | 76,422 |
| Countries of Africa | 0 | - | 5.00 | 2,508,016 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,436 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,424 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,818 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,631 |
