| States of Brazil | 0 | - | 4.97 | 86,908 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,289 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,587 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,251 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,382 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,657 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,242 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,508 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 320,366 |
| States of Mexico | 0 | - | 4.95 | 174,326 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,635 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,470 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,600,051 |
| Brazil Country Quiz | 0 | - | 4.52 | 101,347 |
| Brazil Cities Map Quiz | 0 | - | 4.62 | 36,448 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 273,587 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,660 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,708 |
| Flags of North and South America | 0 | - | 4.99 | 369,495 |
| South American Physical Geography | 0 | - | 4.58 | 18,297 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 715,129 |
| South America Capitals Quiz | 0 | - | 5.00 | 478,736 |
| Countries that Beat Brazil | 0 | - | 4.49 | 68,141 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,300 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,154 |
| The Only American Country ... | 0 | - | 4.92 | 121,091 |
| Uruguay Country Quiz | 0 | - | 4.83 | 31,427 |
| US States Quiz | 0 | - | 5.00 | 16,761,122 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,941 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,216 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,368 |
| Mexico States Map Quiz | 0 | - | 4.84 | 104,106 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,458 |
| South America A-Z | 0 | - | 4.13 | 10,863 |
| Word Chain - South America | 0 | - | 4.51 | 23,811 |
| Argentina Country Quiz | 0 | - | 4.53 | 57,243 |
| Chile Country Quiz | 0 | - | 4.75 | 39,854 |
| Ecuador Country Quiz | 0 | - | 4.60 | 31,714 |
| Peru Country Quiz | 0 | - | 4.54 | 48,438 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,490 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 744,735 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,938 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,947 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 329,331 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,632 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,844 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,496 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,426 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,888 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,165 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,173 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,224 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,804 |
| Which South American Country? | 0 | - | 4.69 | 51,800 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,909 |
| Pixelated United States Map | 0 | - | 4.89 | 93,741 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,886 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,166 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,733 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,026 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,645 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,217 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,813 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,811 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,216 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,461 |
| U.S. States By Population | 0 | - | 4.92 | 152,689 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,787 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,098 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,982 |
| US States with an Empty Map | 0 | - | 5.00 | 620,842 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,874 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,938 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,185 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,326 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,135 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,152 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,632 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,188 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,209 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,377 |
| Word Scramble - Asian Countries | 0 | - | 4.49 | 108,424 |
| Countries of the World - One Minute Sprint | 0 | - | 4.35 | 965,342 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,074 |
| Famous People from South America | 0 | - | 4.15 | 21,854 |
| Guyana Country Quiz | 0 | - | 4.49 | 22,677 |
| Venezuela Country Quiz | 0 | - | 4.50 | 30,483 |
| Paraguay Country Quiz | 0 | - | 4.53 | 25,170 |
| Bolivia Country Quiz | 0 | - | 4.63 | 26,133 |
| Suriname Country Quiz | 0 | - | 4.60 | 19,716 |
| California Groups of Things | 0 | - | 4.25 | 45,323 |
| New York Groups of Things | 0 | - | 4.38 | 60,011 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,322 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,409 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,146 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,992 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,427 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,665 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,349 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 237,770 |
| NBA Teams - One Minute Sprint | 0 | - | 4.54 | 154,146 |
| Famous People from Africa | 0 | - | 4.45 | 10,916 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,869 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,194 |
| Word Chain - Africa | 0 | - | 4.47 | 31,518 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,985 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,915 |
| Belize Country Quiz | 0 | - | 4.85 | 20,861 |
| Famous Caribbean People | 0 | - | 4.37 | 12,582 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,166 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,649 |
| African-American Historical Figures | 0 | - | 4.18 | 17,148 |
| Europe Map Quiz | 0 | - | 5.00 | 4,742,277 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,096 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,737 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,041 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,086 |
| German Groups of Things | 0 | - | 4.46 | 38,367 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,389 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,405 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,186 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,994 |
| Africa Map Quiz | 0 | - | 5.00 | 2,109,248 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,753 |
| Australian Capitals | 0 | - | 4.92 | 62,642 |
| Word Chain - Australia | 0 | - | 4.37 | 38,058 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,759 |
| South American Cities on the Map | 0 | - | 4.56 | 35,293 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,283 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,367 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,507 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,117 |
| United States Country Quiz | 0 | - | 4.43 | 100,938 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,703 |
| Canada Country Quiz | 0 | - | 4.55 | 131,998 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,815 |
| Canada A-Z | 0 | - | 4.73 | 32,707 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,798 |
| Official European Union Languages | 0 | - | 4.97 | 237,488 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,216 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,216 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,311 |
| Asia Map Quiz | 0 | - | 4.99 | 909,946 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,761 |
| World Capitals - One Minute Sprint | 0 | - | 4.21 | 234,072 |
| Countries of Africa | 0 | - | 5.00 | 2,517,772 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,163 |
| African East Coast | 0 | - | 4.96 | 95,413 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,278 |
| Canada or Africa by Area | 0 | - | 4.77 | 18,170 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,006 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,100 |
| Australia Map Quiz | 0 | - | 4.94 | 343,071 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,942 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,427 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,145 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,361 |
| History of Mexico | 0 | - | 4.58 | 15,251 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,633 |
| Costa Rica Country Quiz | 0 | - | 4.75 | 32,008 |
| Cuba Country Quiz | 0 | - | 4.69 | 51,290 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,627 |
| Jamaica Country Quiz | 0 | - | 4.58 | 34,935 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,438 |
| Top U.S. Universities | 0 | - | 4.15 | 144,425 |
| Largest United States Airlines | 0 | - | 4.39 | 54,905 |
| United States Map Quiz | 0 | - | 4.98 | 4,146,865 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,320 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,822 |
| U.S. States by Governor | 0 | - | 4.43 | 18,006 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,609 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,589 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,698 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,782 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,234 |
| New England States | 0 | - | 4.51 | 59,738 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,740 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,555 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,603 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,936 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,348 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,088 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,519 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 55,790 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,762 |
| U.S. States by Borders | 0 | - | 4.63 | 35,168 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,335 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,729 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,667 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,542 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,063 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,811 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,428 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,698 |
| U.S. States with the Fewest Borders | 0 | - | 4.77 | 113,204 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,256 |
| O Canada Lyrics | 0 | - | 4.47 | 50,856 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,237 |
| NHL Hockey Teams in Canada | 0 | - | 4.35 | 34,690 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,861 |
