| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,630 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,487 |
| States of Brazil | 0 | - | 4.97 | 89,373 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,931 |
| Flags of North and South America | 0 | - | 4.99 | 376,154 |
| Countries Bordering Brazil | 0 | - | 4.96 | 132,166 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,827 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,551 |
| South American Geography Quiz #2 | 0 | - | 4.41 | 43,635 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,843 |
| States of Mexico | 0 | - | 4.96 | 177,809 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,485 |
| Countries that Beat Brazil | 0 | - | 4.49 | 69,117 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,358 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,779 |
| Argentina Country Quiz | 0 | - | 4.53 | 57,751 |
| Brazil Country Quiz | 0 | - | 4.52 | 102,260 |
| Brazil Cities Map Quiz | 0 | - | 4.62 | 36,803 |
| Chile Country Quiz | 0 | - | 4.75 | 40,242 |
| Ecuador Country Quiz | 0 | - | 4.60 | 31,987 |
| Peru Country Quiz | 0 | - | 4.54 | 48,876 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,425 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,869 |
| Which South American Country? | 0 | - | 4.69 | 52,076 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,486 |
| South America Map Quiz | 0 | - | 5.00 | 1,554,794 |
| South American Physical Geography | 0 | - | 4.58 | 18,390 |
| Belize Country Quiz | 0 | - | 4.85 | 21,064 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,254,796 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,183 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,713 |
| Flags of Africa Quiz | 0 | - | 5.00 | 476,192 |
| South America Capitals Quiz | 0 | - | 5.00 | 484,264 |
| Guyana Country Quiz | 0 | - | 4.50 | 22,905 |
| Venezuela Country Quiz | 0 | - | 4.51 | 30,717 |
| Paraguay Country Quiz | 0 | - | 4.54 | 25,385 |
| Bolivia Country Quiz | 0 | - | 4.63 | 26,376 |
| Suriname Country Quiz | 0 | - | 4.61 | 19,920 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 904,453 |
| Flags of Oceania | 0 | - | 5.00 | 262,071 |
| The Only American Country ... | 0 | - | 4.92 | 122,102 |
| South American Cities on the Map | 0 | - | 4.52 | 35,532 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,690 |
| US States Quiz | 0 | - | 5.00 | 16,970,785 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,378 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,312 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,334 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,956 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,674 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,522 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,339 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,705 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,840 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,677 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,358 |
| Central American Countries | 0 | - | 4.98 | 157,174 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,192 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 149,992 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,384 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,222 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,974 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,810 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,059 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,629 |
| Flags of the Mediterranean | 0 | - | 4.94 | 149,182 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,307 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,585 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,555 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,998 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,690 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,933 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,865 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,506 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,641 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,010 |
| Name a Valid African Country | 0 | - | 4.98 | 154,866 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,571 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 92,403 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,252 |
| El Salvador Country Quiz | 0 | - | 4.63 | 31,855 |
| Costa Rica Country Quiz | 0 | - | 4.75 | 32,316 |
| Cuba Country Quiz | 0 | - | 4.70 | 51,714 |
| Jamaica Country Quiz | 0 | - | 4.58 | 35,220 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,770 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,353 |
| Pixelated United States Map | 0 | - | 4.88 | 94,706 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,361 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,310 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,046 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,619 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,898 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 112,125 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,126 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,154 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,150 |
| U.S. States By Population | 0 | - | 4.92 | 154,031 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,076 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,802 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,159 |
| US States with an Empty Map | 0 | - | 5.00 | 627,787 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,771 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,482 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,001 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,338 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,956 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,563 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,952 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,863 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,982 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,875 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,448 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,027 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,559 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,378 |
| California Groups of Things | 0 | - | 4.26 | 45,725 |
| New York Groups of Things | 0 | - | 4.39 | 71,778 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,570 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,285 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,741 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,355 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,699 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,164 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,487 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,986 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,354 |
| South America A-Z | 0 | - | 4.15 | 10,940 |
| Guatemala Country Quiz | 0 | - | 4.63 | 25,544 |
| Honduras Country Quiz | 0 | - | 4.52 | 24,002 |
| Panama Country Quiz | 0 | - | 4.61 | 25,911 |
| Nicaragua Country Quiz | 0 | - | 4.62 | 26,689 |
| Antigua and Barbuda Country Quiz | 0 | - | 4.68 | 22,183 |
| Dominican Republic Country Quiz | 0 | - | 4.61 | 23,551 |
| Barbados Country Quiz | 0 | - | 4.78 | 19,831 |
| Grenada Country Quiz | 0 | - | 4.62 | 18,994 |
| Saint Kitts and Nevis Country Quiz | 0 | - | 4.57 | 18,826 |
| Trinidad and Tobago Country Quiz | 0 | - | 4.61 | 22,262 |
| Names of Generations | 0 | - | 4.09 | 45,433 |
| Washington State by Picture | 0 | - | 4.26 | 7,750 |
| Movies by State | 0 | - | 4.27 | 40,598 |
| Most Valuable Crops by U.S. State | 0 | - | 4.40 | 39,191 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,085 |
| Europe Map Quiz | 0 | - | 5.00 | 4,782,402 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,464 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,124 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,415 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,385 |
| Cross Flags of Europe | 0 | - | 4.43 | 300,141 |
| Satellite Images - Europe | 0 | - | 4.47 | 105,067 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,373 |
| German Groups of Things | 0 | - | 4.47 | 38,610 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,692 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,631 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,701 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,344 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,404 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,068 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,121 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,532 |
| Empires by Maps | 0 | - | 4.98 | 121,560 |
| All Country Flags of the World | 0 | - | 5.00 | 3,703,300 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,349 |
| Australian Capitals | 0 | - | 4.92 | 62,812 |
| Word Chain - Australia | 0 | - | 4.38 | 38,224 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,742 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,790 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,309 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,656 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,265 |
| United States Country Quiz | 0 | - | 4.43 | 102,061 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,035 |
| Canada Country Quiz | 0 | - | 4.55 | 132,935 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,527 |
| Canada A-Z | 0 | - | 4.73 | 32,942 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,609 |
| Official European Union Languages | 0 | - | 4.97 | 239,536 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,512 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,400 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,402 |
| Asia Map Quiz | 0 | - | 4.99 | 923,670 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,165 |
| Flags of the Middle East | 0 | - | 4.69 | 62,790 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,683 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,461 |
| Countries by Road Signs | 0 | - | 4.98 | 54,259 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,982 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,543,965 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,096,258 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,822 |
| Countries that Beat South Africa | 0 | - | 4.69 | 42,636 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,124 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,327 |
| Australia Map Quiz | 0 | - | 4.95 | 345,883 |
| Pixelated Americas Map | 0 | - | 4.39 | 47,376 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,844 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 53,276 |
| History of Mexico | 0 | - | 4.52 | 15,358 |
| Top U.S. Universities | 0 | - | 4.15 | 145,676 |
| Largest United States Airlines | 0 | - | 4.39 | 55,133 |
| United States Map Quiz | 0 | - | 4.98 | 4,168,706 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 749,189 |
