| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,635 |
| Topological Map of Africa Quiz | 0 | - | 4.81 | 21,687 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,121 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,645 |
| Name a Valid African Country | 0 | - | 4.98 | 155,330 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,313 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,836 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,686 |
| Topological Map of Asia Quiz | 0 | - | 4.83 | 20,583 |
| Africa Map Quiz | 0 | - | 5.00 | 2,131,257 |
| Countries of Africa | 0 | - | 5.00 | 2,565,982 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 48,302 |
| African East Coast | 0 | - | 4.96 | 96,954 |
| Western Africa Map Quiz | 0 | - | 4.98 | 74,854 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,586 |
| Flags of Africa Quiz | 0 | - | 5.00 | 479,485 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,844 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,586 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,258 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,526 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,482 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,526 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,697 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,780 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,392 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,596 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 219,240 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 118,108 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 162,749 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.95 | 47,790 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 155,029 |
| Top African Languages on a Map | 0 | - | 4.94 | 75,547 |
| African Island Countries | 0 | - | 4.96 | 102,783 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,949 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,830 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,805 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,614 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,189 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,064 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,062 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 136,341 |
| African Diaspora - Top 10 Countries | 0 | - | 4.93 | 73,579 |
| The Only African Country ... | 0 | - | 4.99 | 129,839 |
| African Countries by a Single Clue | 0 | - | 4.92 | 68,474 |
| 10 Easternmost Countries in Africa | 0 | - | 4.98 | 25,281 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,867 |
| Countries Closest to Africa | 0 | - | 4.96 | 158,039 |
| African Countries That Have Been to the FIFA World Cup | 0 | - | 4.89 | 60,890 |
| Nigeria Country Quiz | 0 | - | 4.75 | 47,342 |
| History of South Africa | 0 | - | 4.60 | 17,782 |
| D.R. Congo Country Quiz | 0 | - | 4.88 | 39,663 |
| Countries Bordering D.R. Congo | 0 | - | 4.97 | 64,915 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,153 |
| South American Geography Quiz #1 | 0 | - | 4.63 | 32,939 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,908 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,732,453 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,065 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,959 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,837 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,459 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,415 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,370 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,318 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,536 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,171 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,097 |
| Name the English Monarchs | 0 | - | 4.91 | 507,560 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,615 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,984 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,999 |
| Geography of Egypt | 0 | - | 4.60 | 21,724 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,742 |
| African Great Lakes | 0 | - | 4.82 | 67,162 |
| Nile River Basin Countries on a Map | 0 | - | 4.95 | 51,040 |
| Kenya Country Quiz | 0 | - | 4.86 | 35,092 |
| Countries Closest to Ethiopia | 0 | - | 4.90 | 69,359 |
| Countries Bordering Kenya | 0 | - | 4.87 | 63,227 |
| Tanzania Country Quiz | 0 | - | 4.90 | 33,304 |
| Countries Bordering Tanzania | 0 | - | 4.96 | 70,756 |
| Morocco Country Quiz | 0 | - | 4.81 | 46,934 |
| Countries Bordering South Africa | 0 | - | 4.97 | 92,942 |
| Countries Closest to South Africa with Exceptions | 0 | - | 4.81 | 64,169 |
| Countries that Beat South Africa | 0 | - | 4.69 | 42,761 |
| Gabon Country Quiz | 0 | - | 4.83 | 18,673 |
| Countries that Beat D.R. Congo | 0 | - | 4.75 | 42,078 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,973 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,526 |
| Countries that Beat Canada | 0 | - | 4.90 | 99,160 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,783 |
| The Trojan War | 0 | - | 4.83 | 40,105 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,228 |
| Name that Greek Letter | 0 | - | 4.93 | 325,374 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,317 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,717 |
| Roman Emperors | 0 | - | 4.95 | 121,493 |
| Countries that Beat Portugal | 0 | - | 4.86 | 60,023 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,177 |
| Prime Ministers of the UK | 0 | - | 4.95 | 443,351 |
| History of Egypt | 0 | - | 4.58 | 24,118 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,607 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 61,016 |
| Djibouti Country Quiz | 0 | - | 4.82 | 21,852 |
| Mauritius Country Quiz | 0 | - | 4.83 | 22,412 |
| Seychelles Country Quiz | 0 | - | 4.91 | 22,016 |
| Senegal Country Quiz | 0 | - | 4.62 | 23,344 |
| Benin Country Quiz | 0 | - | 4.64 | 22,460 |
| Burkina Faso Country Quiz | 0 | - | 4.80 | 25,272 |
| Cape Verde Country Quiz | 0 | - | 4.47 | 19,373 |
| Liberia Country Quiz | 0 | - | 4.85 | 22,035 |
| Mali Country Quiz | 0 | - | 4.83 | 24,973 |
| Eswatini Country Quiz | 0 | - | 4.85 | 20,954 |
| Botswana Country Quiz | 0 | - | 4.90 | 22,680 |
| Lesotho Country Quiz | 0 | - | 4.83 | 20,719 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,489 |
| South American Geography Quiz #2 | 0 | - | 4.40 | 44,393 |
| Names of Generations | 0 | - | 4.09 | 45,618 |
| American History Quotes #1 | 0 | - | 4.37 | 96,258 |
| American History Quotes #2 | 0 | - | 4.38 | 41,543 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,640 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,376 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,207 |
| History of Russia Quiz | 0 | - | 4.47 | 32,031 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,469 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,634 |
| Ancient Greek Words | 0 | - | 4.93 | 112,721 |
| History of Italy | 0 | - | 4.55 | 32,195 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,859 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,317 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,480 |
| Geography of Spain | 0 | - | 4.59 | 22,299 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,153 |
| African Physical Geography | 0 | - | 4.51 | 31,847 |
| Countries of Africa by Borders in 30 Seconds | 0 | - | 4.43 | 356,940 |
| Sudan Country Quiz | 0 | - | 4.91 | 27,890 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,964 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,974 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 194,084 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,984 |
| Europe Map Quiz | 0 | - | 5.00 | 4,794,668 |
| Topological Map of Mainland Europe | 0 | - | 4.39 | 29,158 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,557 |
| German Groups of Things | 0 | - | 4.47 | 38,680 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,573 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,639 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,989 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 281,109 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,730 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,518 |
| Ten Highest HDI Countries in Africa | 0 | - | 4.70 | 67,982 |
| Inventions by Country #1 | 0 | - | 4.47 | 55,212 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,640 |
| Australian Capitals | 0 | - | 4.92 | 62,865 |
| Word Chain - Australia | 0 | - | 4.38 | 38,268 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,250 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,887 |
| History of Mexico | 0 | - | 4.52 | 15,376 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,815 |
| United States Map Quiz | 0 | - | 4.98 | 4,174,093 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,499 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,626 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,727 |
| Canadian Prime Ministers | 0 | - | 4.64 | 58,030 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,883 |
| Official European Union Languages | 0 | - | 4.97 | 240,429 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,865 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,515 |
| European Geographic Groups of Four | 0 | - | 4.56 | 20,525 |
| History of Austria | 0 | - | 4.70 | 17,992 |
| Geography of the French Empire | 0 | - | 4.45 | 27,240 |
| Word Chain - France | 0 | - | 4.38 | 42,969 |
| The French Revolution | 0 | - | 4.47 | 24,173 |
| History of France | 0 | - | 4.61 | 57,759 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,580 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,292 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,077 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 21,074 |
| Figures from Greek Mythology | 0 | - | 4.92 | 193,831 |
| Italian Foods | 0 | - | 4.30 | 73,418 |
| Countries Italy Declared War On | 0 | - | 4.74 | 48,980 |
| Byzantine History | 0 | - | 4.91 | 29,061 |
| Byzantine Emperors | 0 | - | 4.93 | 14,667 |
| History of The Netherlands | 0 | - | 4.46 | 17,579 |
| The Vikings! | 0 | - | 4.46 | 28,428 |
| The Portuguese Empire | 0 | - | 4.58 | 12,120 |
| British Groups of Things | 0 | - | 4.26 | 83,048 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,134 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,496 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,404 |
| Geography of the British Empire | 0 | - | 4.48 | 39,888 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,344 |
| Medieval English History | 0 | - | 4.53 | 43,697 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,637 |
| Asia Map Quiz | 0 | - | 4.99 | 927,073 |
| Asian Last Names in the United States | 0 | - | 4.43 | 47,027 |
| History of Iran | 0 | - | 4.66 | 16,443 |
| Egyptian Gods and Goddesses | 0 | - | 4.43 | 27,694 |
| Geography of China | 0 | - | 4.35 | 19,109 |
| Chinese Inventions | 0 | - | 4.30 | 33,877 |
| History of China | 0 | - | 4.35 | 57,701 |
| History of India | 0 | - | 4.62 | 21,531 |
