| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,504 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,060 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,951 |
| Name a Valid African Country | 0 | - | 4.98 | 154,807 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,012 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,581 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,438 |
| Topological Map of Asia Quiz | 0 | - | 4.82 | 20,364 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,103 |
| Countries of Africa | 0 | - | 5.00 | 2,553,182 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,632 |
| African East Coast | 0 | - | 4.96 | 96,566 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,422 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,835 |
| Flags of Africa Quiz | 0 | - | 5.00 | 475,836 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,673 |
| Topological Map of Africa Quiz | 0 | - | 4.80 | 21,562 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,453 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,106 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,404 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,367 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,342 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,620 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,685 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,332 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,400 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,083 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 117,316 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 162,085 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,974 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,331 |
| Top African Languages on a Map | 0 | - | 4.94 | 74,949 |
| African Island Countries | 0 | - | 4.96 | 102,256 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,311 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,571 |
| History of South Africa | 0 | - | 4.60 | 17,743 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,512 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,097 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,713 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,509 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,637 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,894 |
| African Diaspora - Top 10 Countries | 0 | - | 4.93 | 73,197 |
| The Only African Country ... | 0 | - | 4.99 | 129,515 |
| African Countries by a Single Clue | 0 | - | 4.92 | 68,317 |
| 10 Easternmost Countries in Africa | 0 | - | 4.97 | 24,671 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,290 |
| Countries Closest to Africa | 0 | - | 4.96 | 157,635 |
| African Countries That Have Been to the FIFA World Cup | 0 | - | 4.89 | 59,269 |
| Morocco Country Quiz | 0 | - | 4.81 | 46,738 |
| Countries Bordering South Africa | 0 | - | 4.97 | 92,872 |
| Countries Closest to South Africa with Exceptions | 0 | - | 4.81 | 64,075 |
| D.R. Congo Country Quiz | 0 | - | 4.88 | 39,524 |
| Countries Bordering D.R. Congo | 0 | - | 4.97 | 64,760 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,116 |
| South American Geography Quiz #2 | 0 | - | 4.41 | 43,441 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,823 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,298 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,719,069 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,574 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,830 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,695 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,150 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,472 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,443 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,805 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,774 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,619 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,472 |
| Name the English Monarchs | 0 | - | 4.91 | 505,446 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,788 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,456 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,577 |
| Geography of Egypt | 0 | - | 4.60 | 21,584 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,340 |
| African Great Lakes | 0 | - | 4.82 | 66,799 |
| Nile River Basin Countries on a Map | 0 | - | 4.95 | 50,868 |
| Kenya Country Quiz | 0 | - | 4.86 | 34,940 |
| Countries Closest to Ethiopia | 0 | - | 4.90 | 69,167 |
| Countries Bordering Kenya | 0 | - | 4.87 | 63,062 |
| Tanzania Country Quiz | 0 | - | 4.91 | 33,204 |
| Countries Bordering Tanzania | 0 | - | 4.96 | 70,654 |
| Eswatini Country Quiz | 0 | - | 4.85 | 20,899 |
| Botswana Country Quiz | 0 | - | 4.90 | 22,617 |
| Lesotho Country Quiz | 0 | - | 4.83 | 20,666 |
| Countries that Beat South Africa | 0 | - | 4.69 | 42,618 |
| Gabon Country Quiz | 0 | - | 4.83 | 18,629 |
| Countries that Beat D.R. Congo | 0 | - | 4.75 | 41,960 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,343 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,333 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,812 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,401 |
| The Trojan War | 0 | - | 4.83 | 39,934 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,747 |
| Name that Greek Letter | 0 | - | 4.93 | 324,682 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,688 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,489 |
| Roman Emperors | 0 | - | 4.95 | 120,908 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,737 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,928 |
| Prime Ministers of the UK | 0 | - | 4.95 | 441,438 |
| History of Egypt | 0 | - | 4.58 | 24,088 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,335 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,901 |
| Djibouti Country Quiz | 0 | - | 4.82 | 21,787 |
| Mauritius Country Quiz | 0 | - | 4.83 | 22,354 |
| Seychelles Country Quiz | 0 | - | 4.91 | 21,965 |
| Liberia Country Quiz | 0 | - | 4.85 | 21,980 |
| Mali Country Quiz | 0 | - | 4.83 | 24,908 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,345 |
| Names of Generations | 0 | - | 4.09 | 45,396 |
| American History Quotes #1 | 0 | - | 4.37 | 96,169 |
| American History Quotes #2 | 0 | - | 4.38 | 41,485 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,563 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,315 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,731 |
| History of Russia Quiz | 0 | - | 4.47 | 31,986 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,312 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,005 |
| Ancient Greek Words | 0 | - | 4.93 | 112,254 |
| History of Italy | 0 | - | 4.55 | 32,112 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,784 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,150 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,381 |
| Geography of Spain | 0 | - | 4.59 | 22,151 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,041 |
| African Physical Geography | 0 | - | 4.51 | 31,788 |
| Countries of Africa by Borders in 30 Seconds | 0 | - | 4.43 | 356,434 |
| Sudan Country Quiz | 0 | - | 4.91 | 27,805 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,994 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,143 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,362 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,754 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,984 |
| Topological Map of Mainland Europe | 0 | - | 4.39 | 29,010 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,932 |
| German Groups of Things | 0 | - | 4.47 | 38,598 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,088 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,414 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,657 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,317 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,046 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,458 |
| Ten Highest HDI Countries in Africa | 0 | - | 4.70 | 67,917 |
| Inventions by Country #1 | 0 | - | 4.47 | 55,154 |
| South Africa Country Quiz | 0 | - | 4.52 | 61,756 |
| Provinces of South Africa | 0 | - | 4.74 | 21,890 |
| Geography of South Africa | 0 | - | 4.54 | 17,297 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,946 |
| Australian Capitals | 0 | - | 4.92 | 62,805 |
| Word Chain - Australia | 0 | - | 4.38 | 38,217 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,151 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,833 |
| History of Mexico | 0 | - | 4.52 | 15,357 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,670 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,968 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,348 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,586 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,675 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,812 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,583 |
| Official European Union Languages | 0 | - | 4.97 | 239,453 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,455 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,217 |
| European Geographic Groups of Four | 0 | - | 4.54 | 19,650 |
| History of Austria | 0 | - | 4.70 | 17,952 |
| Geography of the French Empire | 0 | - | 4.45 | 27,196 |
| Word Chain - France | 0 | - | 4.38 | 42,899 |
| The French Revolution | 0 | - | 4.47 | 24,111 |
| History of France | 0 | - | 4.61 | 57,469 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,543 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,175 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,007 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,923 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,385 |
| Italian Foods | 0 | - | 4.30 | 73,141 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,564 |
| Byzantine History | 0 | - | 4.91 | 28,992 |
| Byzantine Emperors | 0 | - | 4.92 | 14,505 |
| History of The Netherlands | 0 | - | 4.46 | 17,529 |
| The Vikings! | 0 | - | 4.46 | 28,393 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| British Groups of Things | 0 | - | 4.25 | 82,975 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,085 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,438 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,116 |
| Geography of the British Empire | 0 | - | 4.48 | 39,814 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,294 |
| Medieval English History | 0 | - | 4.53 | 43,620 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,133 |
| Asia Map Quiz | 0 | - | 4.99 | 923,128 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,921 |
| History of Iran | 0 | - | 4.66 | 16,406 |
| Egyptian Gods and Goddesses | 0 | - | 4.43 | 27,632 |
| Geography of China | 0 | - | 4.21 | 14,002 |
| Chinese Inventions | 0 | - | 4.30 | 33,846 |
| History of China | 0 | - | 4.35 | 57,471 |
| History of India | 0 | - | 4.62 | 21,489 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,604 |
| Which African Country? | 0 | - | 4.58 | 36,433 |
