| States of Brazil | 0 | - | 4.97 | 88,541 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,144 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,227 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,897 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,649 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,256 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,385 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,599 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 322,706 |
| States of Mexico | 0 | - | 4.96 | 176,682 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,799 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,793 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,631,789 |
| Brazil Country Quiz | 0 | - | 4.52 | 101,968 |
| Brazil Cities Map Quiz | 0 | - | 4.62 | 36,695 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 275,775 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,791 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,091 |
| Flags of North and South America | 0 | - | 4.99 | 374,135 |
| South American Physical Geography | 0 | - | 4.58 | 18,366 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,632 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 722,544 |
| South America Capitals Quiz | 0 | - | 5.00 | 482,382 |
| Countries that Beat Brazil | 0 | - | 4.49 | 68,793 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,420 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,381 |
| The Only American Country ... | 0 | - | 4.92 | 121,790 |
| US States Quiz | 0 | - | 5.00 | 16,912,150 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,735 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,355 |
| Mexico States Map Quiz | 0 | - | 4.84 | 104,955 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,073 |
| South America A-Z | 0 | - | 4.13 | 10,919 |
| Word Chain - South America | 0 | - | 4.51 | 23,928 |
| Argentina Country Quiz | 0 | - | 4.53 | 57,579 |
| Chile Country Quiz | 0 | - | 4.77 | 40,119 |
| Ecuador Country Quiz | 0 | - | 4.60 | 31,903 |
| Peru Country Quiz | 0 | - | 4.54 | 48,745 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,093 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 747,926 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,839 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,741 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 332,977 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,930 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,364 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,830 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,309 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,562 |
| Word Chain - Africa | 0 | - | 4.47 | 31,643 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,468 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,370 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,641 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 130,734 |
| Which South American Country? | 0 | - | 4.69 | 51,999 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,224 |
| Pixelated United States Map | 0 | - | 4.88 | 94,433 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,911 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,966 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,652 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,783 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,038 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,112 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,677 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,639 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,288 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,605 |
| U.S. States By Population | 0 | - | 4.92 | 153,721 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,678 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,578 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,819 |
| US States with an Empty Map | 0 | - | 5.00 | 625,846 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,475 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,320 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,774 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,919 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,592 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,440 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,554 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,340 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,853 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,463 |
| Word Scramble - Asian Countries | 0 | - | 4.49 | 109,009 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 978,455 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,789 |
| Famous People from South America | 0 | - | 4.15 | 22,016 |
| Guyana Country Quiz | 0 | - | 4.50 | 22,835 |
| Venezuela Country Quiz | 0 | - | 4.51 | 30,648 |
| Paraguay Country Quiz | 0 | - | 4.54 | 25,330 |
| Bolivia Country Quiz | 0 | - | 4.63 | 26,292 |
| Suriname Country Quiz | 0 | - | 4.61 | 19,848 |
| California Groups of Things | 0 | - | 4.25 | 45,522 |
| New York Groups of Things | 0 | - | 4.35 | 63,909 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,502 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,398 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,256 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,890 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,304 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,984 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,436 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 240,575 |
| NBA Teams - One Minute Sprint | 0 | - | 4.54 | 155,755 |
| Famous People from Africa | 0 | - | 4.45 | 10,964 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,995 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,555 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,247 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,951 |
| Belize Country Quiz | 0 | - | 4.85 | 21,010 |
| Famous Caribbean People | 0 | - | 4.37 | 12,633 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,208 |
| Name a Valid Answer - United States #1 | 0 | - | 4.63 | 94,122 |
| African-American Historical Figures | 0 | - | 4.18 | 17,237 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,902 |
| Europe Map Quiz | 0 | - | 5.00 | 4,769,789 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,344 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,002 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,290 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,287 |
| German Groups of Things | 0 | - | 4.46 | 38,515 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,547 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,598 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,281 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,593 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,270 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,642 |
| Australian Capitals | 0 | - | 4.92 | 62,746 |
| Word Chain - Australia | 0 | - | 4.38 | 38,168 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,785 |
| South American Cities on the Map | 0 | - | 4.53 | 35,464 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,305 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,585 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,609 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,211 |
| United States Country Quiz | 0 | - | 4.43 | 101,688 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,938 |
| Canada Country Quiz | 0 | - | 4.54 | 132,644 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,327 |
| Canada A-Z | 0 | - | 4.73 | 32,885 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,304 |
| Official European Union Languages | 0 | - | 4.97 | 238,872 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,099 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,922 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,536 |
| Asia Map Quiz | 0 | - | 4.99 | 919,176 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,047 |
| World Capitals - One Minute Sprint | 0 | - | 4.21 | 235,689 |
| Countries of Africa | 0 | - | 5.00 | 2,543,789 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,068 |
| African East Coast | 0 | - | 4.96 | 96,255 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,105 |
| Canada or Africa by Area | 0 | - | 4.78 | 18,410 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,073 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,857 |
| Australia Map Quiz | 0 | - | 4.95 | 345,005 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,501 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,927 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,514 |
| History of Mexico | 0 | - | 4.58 | 15,331 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,731 |
| El Salvador Country Quiz | 0 | - | 4.63 | 31,764 |
| Costa Rica Country Quiz | 0 | - | 4.75 | 32,229 |
| Cuba Country Quiz | 0 | - | 4.70 | 51,576 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,760 |
| Jamaica Country Quiz | 0 | - | 4.58 | 35,140 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,655 |
| Top U.S. Universities | 0 | - | 4.15 | 145,341 |
| Largest United States Airlines | 0 | - | 4.39 | 55,068 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,023 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 209,787 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,028 |
| U.S. States by Governor | 0 | - | 4.43 | 18,078 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,714 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,705 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 59,950 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,863 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,389 |
| Events in U.S. History | 0 | - | 4.41 | 28,705 |
| New England States | 0 | - | 4.51 | 59,830 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 52,981 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,877 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,880 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,032 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,529 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,235 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 82,901 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,103 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,996 |
| U.S. States by Borders | 0 | - | 4.61 | 35,369 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,537 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,137 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,839 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,910 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,267 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,905 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,523 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,791 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 113,969 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,323 |
| O Canada Lyrics | 0 | - | 4.47 | 50,974 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,617 |
| NHL Hockey Teams in Canada | 0 | - | 4.35 | 35,061 |
