| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,460 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,032 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,815 |
| Name a Valid African Country | 0 | - | 4.98 | 154,619 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,976 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,496 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,354 |
| Topological Map of Asia Quiz | 0 | - | 4.82 | 20,304 |
| Africa Map Quiz | 0 | - | 5.00 | 2,124,354 |
| Countries of Africa | 0 | - | 5.00 | 2,549,987 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,484 |
| African East Coast | 0 | - | 4.96 | 96,460 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,330 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,332,481 |
| Flags of Africa Quiz | 0 | - | 5.00 | 474,818 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,632 |
| Topological Map of Africa Quiz | 0 | - | 4.80 | 21,503 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,416 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,075 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,370 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,341 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,283 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,598 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,658 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,319 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,341 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,902 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 117,206 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,951 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,868 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,159 |
| Top African Languages on a Map | 0 | - | 4.94 | 74,784 |
| African Island Countries | 0 | - | 4.96 | 102,130 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,161 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,506 |
| History of South Africa | 0 | - | 4.60 | 17,730 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,412 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,954 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,244 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,338 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,501 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,289 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,768 |
| African Diaspora - Top 10 Countries | 0 | - | 4.93 | 73,130 |
| The Only African Country ... | 0 | - | 4.99 | 129,423 |
| African Countries by a Single Clue | 0 | - | 4.92 | 68,286 |
| 10 Easternmost Countries in Africa | 0 | - | 4.98 | 23,518 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,206 |
| Countries Closest to Africa | 0 | - | 4.96 | 157,543 |
| African Countries That Have Been to the FIFA World Cup | 0 | - | 4.89 | 58,950 |
| Morocco Country Quiz | 0 | - | 4.81 | 46,682 |
| Countries Bordering South Africa | 0 | - | 4.97 | 92,856 |
| Countries Closest to South Africa with Exceptions | 0 | - | 4.81 | 64,055 |
| D.R. Congo Country Quiz | 0 | - | 4.88 | 39,490 |
| Countries Bordering D.R. Congo | 0 | - | 4.97 | 64,709 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,108 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,774 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,118 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,714,834 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,444 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,800 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,658 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,770 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,918 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,147 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,650 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,107 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,404 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,271 |
| Name the English Monarchs | 0 | - | 4.91 | 504,866 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,598 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,316 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,415 |
| Geography of Egypt | 0 | - | 4.60 | 21,575 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,236 |
| African Great Lakes | 0 | - | 4.82 | 66,717 |
| Nile River Basin Countries on a Map | 0 | - | 4.95 | 50,825 |
| Kenya Country Quiz | 0 | - | 4.86 | 34,910 |
| Countries Closest to Ethiopia | 0 | - | 4.90 | 69,116 |
| Countries Bordering Kenya | 0 | - | 4.87 | 63,018 |
| Tanzania Country Quiz | 0 | - | 4.90 | 33,177 |
| Countries Bordering Tanzania | 0 | - | 4.96 | 70,618 |
| Eswatini Country Quiz | 0 | - | 4.85 | 20,881 |
| Botswana Country Quiz | 0 | - | 4.90 | 22,592 |
| Lesotho Country Quiz | 0 | - | 4.83 | 20,649 |
| Countries that Beat South Africa | 0 | - | 4.69 | 42,544 |
| Gabon Country Quiz | 0 | - | 4.83 | 18,613 |
| Countries that Beat D.R. Congo | 0 | - | 4.77 | 41,927 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,126 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,273 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,705 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,249 |
| The Trojan War | 0 | - | 4.83 | 39,894 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,070 |
| Name that Greek Letter | 0 | - | 4.93 | 324,465 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,520 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,366 |
| Roman Emperors | 0 | - | 4.95 | 120,693 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,653 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,857 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,926 |
| History of Egypt | 0 | - | 4.58 | 24,076 |
| Egypt Country Quiz | 0 | - | 4.83 | 77,767 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,230 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,873 |
| Djibouti Country Quiz | 0 | - | 4.82 | 21,765 |
| Mauritius Country Quiz | 0 | - | 4.83 | 22,333 |
| Seychelles Country Quiz | 0 | - | 4.91 | 21,940 |
| Liberia Country Quiz | 0 | - | 4.85 | 21,966 |
| Mali Country Quiz | 0 | - | 4.83 | 24,884 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,306 |
| South American Geography Quiz #2 | 0 | - | 4.40 | 42,916 |
| Names of Generations | 0 | - | 4.09 | 45,313 |
| American History Quotes #1 | 0 | - | 4.37 | 96,136 |
| American History Quotes #2 | 0 | - | 4.38 | 41,468 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,541 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,299 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,324 |
| History of Russia Quiz | 0 | - | 4.47 | 31,975 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,301 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,552 |
| Ancient Greek Words | 0 | - | 4.93 | 112,123 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,880 |
| History of Italy | 0 | - | 4.55 | 32,095 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,761 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,085 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,354 |
| Geography of Spain | 0 | - | 4.59 | 22,136 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,013 |
| African Physical Geography | 0 | - | 4.51 | 31,768 |
| Countries of Africa by Borders in 30 Seconds | 0 | - | 4.43 | 356,335 |
| Sudan Country Quiz | 0 | - | 4.91 | 27,770 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,666 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,867 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,091 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,659 |
| Europe Map Quiz | 0 | - | 5.00 | 4,776,815 |
| Topological Map of Mainland Europe | 0 | - | 4.39 | 28,955 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,408 |
| German Groups of Things | 0 | - | 4.47 | 38,568 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,630 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,363 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,567 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,102 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,864 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,444 |
| Ten Highest HDI Countries in Africa | 0 | - | 4.70 | 67,905 |
| Inventions by Country #1 | 0 | - | 4.47 | 55,131 |
| South Africa Country Quiz | 0 | - | 4.52 | 61,720 |
| Provinces of South Africa | 0 | - | 4.74 | 21,846 |
| Geography of South Africa | 0 | - | 4.54 | 17,287 |
| Oceania Map Quiz | 0 | - | 4.98 | 656,944 |
| Australian Capitals | 0 | - | 4.92 | 62,787 |
| Word Chain - Australia | 0 | - | 4.38 | 38,197 |
| Prime Ministers of Australia | 0 | - | 4.50 | 32,103 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,820 |
| History of Mexico | 0 | - | 4.58 | 15,346 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,639 |
| United States Map Quiz | 0 | - | 4.98 | 4,166,067 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,303 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,570 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,664 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,752 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,477 |
| Official European Union Languages | 0 | - | 4.97 | 239,249 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,316 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,822 |
| European Geographic Groups of Four | 0 | - | 4.57 | 18,882 |
| History of Austria | 0 | - | 4.70 | 17,934 |
| Geography of the French Empire | 0 | - | 4.45 | 27,186 |
| Word Chain - France | 0 | - | 4.38 | 42,881 |
| The French Revolution | 0 | - | 4.47 | 24,094 |
| History of France | 0 | - | 4.61 | 57,396 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,531 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,145 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,984 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,893 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,123 |
| Italian Foods | 0 | - | 4.30 | 73,056 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,512 |
| Byzantine History | 0 | - | 4.91 | 28,965 |
| Byzantine Emperors | 0 | - | 4.92 | 14,451 |
| History of The Netherlands | 0 | - | 4.46 | 17,506 |
| The Vikings! | 0 | - | 4.46 | 28,384 |
| The Portuguese Empire | 0 | - | 4.58 | 12,090 |
| British Groups of Things | 0 | - | 4.25 | 82,954 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,076 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,427 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,030 |
| Geography of the British Empire | 0 | - | 4.48 | 39,798 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,285 |
| Medieval English History | 0 | - | 4.53 | 43,605 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,574 |
| Asia Map Quiz | 0 | - | 4.99 | 921,825 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,887 |
| History of Iran | 0 | - | 4.66 | 16,392 |
| Egyptian Gods and Goddesses | 0 | - | 4.43 | 27,613 |
| Geography of China | 0 | - | 4.21 | 13,990 |
| Chinese Inventions | 0 | - | 4.30 | 33,836 |
| History of China | 0 | - | 4.37 | 57,423 |
