| States of Brazil | 0 | - | 4.98 | 90,168 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.93 | 55,113 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,784 |
| Countries Bordering Brazil | 0 | - | 4.96 | 132,396 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 50,010 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,831 |
| South American Geography Quiz #1 | 0 | - | 4.63 | 32,945 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 324,689 |
| States of Mexico | 0 | - | 4.96 | 178,967 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 176,037 |
| South American Geography Quiz #2 | 0 | - | 4.40 | 44,424 |
| Colombia Country Quiz | 0 | - | 4.90 | 41,085 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,663,082 |
| Brazil Country Quiz | 0 | - | 4.52 | 102,557 |
| Brazil Cities Map Quiz | 0 | - | 4.62 | 36,888 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 277,067 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,892 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,415 |
| Flags of North and South America | 0 | - | 4.99 | 378,590 |
| South American Physical Geography | 0 | - | 4.58 | 18,417 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,802 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 747,128 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,980 |
| Countries that Beat Brazil | 0 | - | 4.50 | 69,385 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,544 |
| The Only American Country ... | 0 | - | 4.92 | 122,416 |
| US States Quiz | 0 | - | 5.00 | 17,034,690 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,996 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,250 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,643 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 93,021 |
| Mexico States Map Quiz | 0 | - | 4.85 | 105,856 |
| Countries of South America with an Empty Map | 0 | - | 4.95 | 105,677 |
| South America A-Z | 0 | - | 4.15 | 10,963 |
| Word Chain - South America | 0 | - | 4.51 | 24,031 |
| Argentina Country Quiz | 0 | - | 4.53 | 57,909 |
| Chile Country Quiz | 0 | - | 4.75 | 40,368 |
| Ecuador Country Quiz | 0 | - | 4.60 | 32,065 |
| Peru Country Quiz | 0 | - | 4.54 | 49,009 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,641 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 750,604 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,631 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 247,285 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 336,614 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,201 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,865 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,545 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,494 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,425 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,661 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,677 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,685 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.92 | 95,817 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,908 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,779 |
| Which South American Country? | 0 | - | 4.69 | 52,166 |
| 10 Longest Rivers in the United States | 0 | - | 4.86 | 39,485 |
| Pixelated United States Map | 0 | - | 4.89 | 95,053 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,840 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,673 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,476 |
| Countries that Beat the United States | 0 | - | 4.93 | 169,026 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,105 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,267 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,505 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,510 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,602 |
| U.S. States that Start with M | 0 | - | 4.94 | 188,673 |
| U.S. States By Population | 0 | - | 4.92 | 154,321 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,451 |
| U.S. States with Longest Names | 0 | - | 4.85 | 45,023 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,508 |
| US States with an Empty Map | 0 | - | 5.00 | 629,955 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 89,029 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,623 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,262 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,631 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,146 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,683 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,744 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,488 |
| Word Scramble - European Countries | 0 | - | 4.72 | 142,515 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,708 |
| Word Scramble - Asian Countries | 0 | - | 4.48 | 109,431 |
| Word Chain - Africa | 0 | - | 4.47 | 31,741 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 984,363 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.91 | 281,455 |
| Famous People from South America | 0 | - | 4.15 | 22,153 |
| Guyana Country Quiz | 0 | - | 4.50 | 22,979 |
| Venezuela Country Quiz | 0 | - | 4.51 | 30,794 |
| Paraguay Country Quiz | 0 | - | 4.54 | 25,451 |
| Bolivia Country Quiz | 0 | - | 4.63 | 26,446 |
| Suriname Country Quiz | 0 | - | 4.61 | 19,966 |
| California Groups of Things | 0 | - | 4.26 | 45,819 |
| New York Groups of Things | 0 | - | 4.39 | 72,431 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,643 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,995 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 126,119 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,775 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 93,066 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,311 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,300 |
| NBA Teams - One Minute Sprint | 0 | - | 4.54 | 156,953 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.96 | 243,694 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,495 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,972 |
| Belize Country Quiz | 0 | - | 4.85 | 21,134 |
| Famous Caribbean People | 0 | - | 4.37 | 12,670 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,244 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 94,528 |
| African-American Historical Figures | 0 | - | 4.18 | 17,314 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,243 |
| Europe Map Quiz | 0 | - | 5.00 | 4,795,725 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,598 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,270 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,540 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,494 |
| German Groups of Things | 0 | - | 4.47 | 38,685 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,702 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,787 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,393 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 281,157 |
| Famous People from Africa | 0 | - | 4.45 | 11,017 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,123 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,777 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,894 |
| Australian Capitals | 0 | - | 4.92 | 62,887 |
| Word Chain - Australia | 0 | - | 4.38 | 38,271 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,803 |
| South American Cities on the Map | 0 | - | 4.52 | 35,593 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,314 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,819 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,704 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,303 |
| United States Country Quiz | 0 | - | 4.43 | 102,403 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,119 |
| Canada Country Quiz | 0 | - | 4.55 | 133,235 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,738 |
| Canada A-Z | 0 | - | 4.73 | 33,006 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,896 |
| Official European Union Languages | 0 | - | 4.97 | 240,486 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,899 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,620 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,814 |
| Asia Map Quiz | 0 | - | 4.99 | 927,344 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,277 |
| Africa Map Quiz | 0 | - | 5.00 | 2,131,624 |
| World Capitals - One Minute Sprint | 0 | - | 4.21 | 237,153 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,158 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,669 |
| Australia Map Quiz | 0 | - | 4.95 | 346,657 |
| U.S. Geography by Letter - B | 0 | - | 4.54 | 70,187 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 58,657 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,864 |
| History of Mexico | 0 | - | 4.52 | 15,385 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,814 |
| El Salvador Country Quiz | 0 | - | 4.63 | 31,967 |
| Costa Rica Country Quiz | 0 | - | 4.75 | 32,412 |
| Cuba Country Quiz | 0 | - | 4.70 | 51,824 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,883 |
| Jamaica Country Quiz | 0 | - | 4.59 | 35,278 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,865 |
| Top U.S. Universities | 0 | - | 4.15 | 146,067 |
| Largest United States Airlines | 0 | - | 4.39 | 55,192 |
| United States Map Quiz | 0 | - | 4.98 | 4,174,524 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,835 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,223 |
| U.S. States by Governor | 0 | - | 4.43 | 18,131 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,790 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,819 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,184 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,921 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,579 |
| Events in U.S. History | 0 | - | 4.41 | 28,870 |
| New England States | 0 | - | 4.51 | 59,916 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 53,213 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.64 | 66,196 |
| U.S. States by Land Area | 0 | - | 4.55 | 53,135 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,142 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,705 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.70 | 61,623 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,265 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,358 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,204 |
| U.S. States by Borders | 0 | - | 4.61 | 35,524 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,734 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,422 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,998 |
| Longest U.S. State Borders | 0 | - | 4.69 | 40,222 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,495 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 68,004 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,588 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,857 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 114,605 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,389 |
| O Canada Lyrics | 0 | - | 4.47 | 51,095 |
| Canadian Prime Ministers | 0 | - | 4.64 | 58,055 |
| NHL Hockey Teams in Canada | 0 | - | 4.35 | 35,264 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,540 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 93,014 |
