| All First-Level Subdivisions of South America on a Map | 0 | - | 4.93 | 55,012 |
| States of Brazil | 0 | - | 4.98 | 90,023 |
| Colombia Country Quiz | 0 | - | 4.90 | 41,050 |
| States of Mexico | 0 | - | 4.96 | 178,702 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,717 |
| South American Geography Quiz #1 | 0 | - | 4.63 | 32,930 |
| Countries Bordering Brazil | 0 | - | 4.96 | 132,349 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,976 |
| South America A-Z | 0 | - | 4.15 | 10,953 |
| Flags of North and South America | 0 | - | 4.99 | 378,065 |
| South American Physical Geography | 0 | - | 4.58 | 18,412 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,594 |
| South American Geography Quiz #2 | 0 | - | 4.40 | 44,336 |
| Venezuela Country Quiz | 0 | - | 4.51 | 30,771 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,783 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,127 |
| Famous Germans | 0 | - | 4.50 | 55,862 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,530 |
| The Only American Country ... | 0 | - | 4.92 | 122,339 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,767 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,959 |
| US States Quiz | 0 | - | 5.00 | 17,020,181 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,872 |
| Canada A-Z | 0 | - | 4.73 | 32,992 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,085 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,105 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,664 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 95,652 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,942 |
| U.S. Geography by Letter - B | 0 | - | 4.54 | 70,142 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 58,537 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,878 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,968 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,857 |
| Mexico States Map Quiz | 0 | - | 4.85 | 105,769 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,581 |
| Countries of South America with an Empty Map | 0 | - | 4.95 | 105,603 |
| Argentina Country Quiz | 0 | - | 4.53 | 57,854 |
| Brazil Country Quiz | 0 | - | 4.52 | 102,485 |
| Brazil Cities Map Quiz | 0 | - | 4.62 | 36,868 |
| Chile Country Quiz | 0 | - | 4.75 | 40,341 |
| Ecuador Country Quiz | 0 | - | 4.60 | 32,045 |
| Peru Country Quiz | 0 | - | 4.54 | 48,982 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,587 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 750,293 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,549 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,730 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 246,980 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 336,175 |
| Pixelated United States Map | 0 | - | 4.89 | 94,920 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,718 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,577 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,159 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,809 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,957 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,175 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,424 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,448 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,502 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,542 |
| U.S. States By Population | 0 | - | 4.92 | 154,247 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,362 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,971 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,593 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,199 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,664 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,635 |
| Famous French People | 0 | - | 4.05 | 36,155 |
| Famous Australians by Description | 0 | - | 4.23 | 28,185 |
| Which South American Country? | 0 | - | 4.69 | 52,145 |
| Countries that Beat Brazil | 0 | - | 4.50 | 69,328 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,451 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,380 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,886 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,443 |
| US States with an Empty Map | 0 | - | 5.00 | 629,519 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,573 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,103 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,778 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,370 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,575 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,158 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,685 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,738 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,699 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 50,459 |
| U.S. Geography by Letter - P | 0 | - | 4.40 | 54,605 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,775 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,719 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,866 |
| U.S. Geography by Letter - R | 0 | - | 4.22 | 37,069 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,801 |
| Guyana Country Quiz | 0 | - | 4.50 | 22,962 |
| Paraguay Country Quiz | 0 | - | 4.54 | 25,432 |
| Bolivia Country Quiz | 0 | - | 4.63 | 26,427 |
| Suriname Country Quiz | 0 | - | 4.61 | 19,949 |
| American Legal Vocabulary | 0 | - | 4.40 | 34,044 |
| People on Money - United States | 0 | - | 4.31 | 63,456 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,834 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,990 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,653 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,979 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,259 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,993 |
| Famous Russians | 0 | - | 4.16 | 23,925 |
| Famous Irish People | 0 | - | 4.05 | 46,078 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,648 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 43,080 |
| Famous Chinese People | 0 | - | 4.09 | 11,933 |
| Africa A-Z | 0 | - | 4.57 | 46,796 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,592 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,212 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,342 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,740 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,248 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,702 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,262 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,774 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,277 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,884 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,164 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,779 |
| Europe Map Quiz | 0 | - | 5.00 | 4,792,818 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,560 |
| Famous Scottish People | 0 | - | 4.22 | 18,443 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,522 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 66,136 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,712 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,270 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,710 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,968 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,379 |
| Middle East A-Z | 0 | - | 4.47 | 46,270 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,627 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,327,469 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,248 |
| Australian Capitals | 0 | - | 4.92 | 62,861 |
| U.S. Geography by Letter - N | 0 | - | 3.80 | 53,194 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 49,233 |
| U.S. Geography by Letter - F | 0 | - | 3.85 | 45,511 |
| U.S. Geography by Letter - O | 0 | - | 3.52 | 41,980 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,801 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,822 |
| History of Mexico | 0 | - | 4.52 | 15,374 |
| South American Cities on the Map | 0 | - | 4.52 | 35,578 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,314 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,646 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,796 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,366 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,695 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,294 |
| United States Country Quiz | 0 | - | 4.43 | 102,330 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,097 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,716 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,180 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,158 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,558 |
| New England States | 0 | - | 4.51 | 59,913 |
| U.S. States by Land Area | 0 | - | 4.55 | 53,111 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,136 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,215 |
| U.S. States by Borders | 0 | - | 4.61 | 35,513 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,713 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,392 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,479 |
| Canadian Prime Ministers | 0 | - | 4.64 | 58,000 |
| Canada Country Quiz | 0 | - | 4.55 | 133,162 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,679 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,851 |
| Official European Union Languages | 0 | - | 4.97 | 240,353 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,804 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,392 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,644 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,338 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,112 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,693 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,336 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,720 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,688 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,990 |
| European Geography A-Z | 0 | - | 4.29 | 49,517 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,365 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,434 |
| Asian Geography By Letter - S | 0 | - | 4.17 | 56,276 |
| Asian Geography by Letter - D | 0 | - | 4.27 | 52,222 |
| Asian Geography by Letter - G | 0 | - | 4.36 | 51,454 |
| Asian Geography by Letter - I | 0 | - | 4.37 | 68,105 |
| Asian Geography by Letter - C | 0 | - | 4.32 | 65,070 |
| Asian Geography by Letter - N | 0 | - | 4.34 | 50,494 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,335 |
| Asia Map Quiz | 0 | - | 4.99 | 926,617 |
| Asian Last Names in the United States | 0 | - | 4.43 | 47,003 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,255 |
| Asian Geography By Letter - J | 0 | - | 4.27 | 34,988 |
| A Quiz About Islam | 0 | - | 4.32 | 48,661 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 35,228 |
| Japanese Companies | 0 | - | 4.29 | 34,393 |
| Africa Map Quiz | 0 | - | 5.00 | 2,130,600 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 158,757 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,588 |
