| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,270 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,467 |
| Australian Capitals | 0 | - | 4.92 | 62,694 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,712 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,046 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,899 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,083 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,033 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,443 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,095 |
| Australian States and Territories | 0 | - | 4.96 | 141,681 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,228 |
| Australia True or False | 0 | - | 4.87 | 56,756 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,325,981 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,868 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,934 |
| New Zealand Country Quiz | 0 | - | 4.70 | 75,858 |
| Non-Stop Flights to New Zealand | 0 | - | 4.46 | 47,949 |
| Countries that Beat New Zealand | 0 | - | 4.70 | 26,381 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,203 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,861 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,151 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,177 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,469 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,492 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,220 |
| Flags of Oceania | 0 | - | 5.00 | 258,101 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.97 | 27,250 |
| Word Chain - Australia | 0 | - | 4.38 | 38,109 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,445 |
| Regions of New Zealand | 0 | - | 4.85 | 28,456 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,909 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,864 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 76,104 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,263 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,693 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,586 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,019 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,596 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,052 |
| Name a Valid African Country | 0 | - | 4.98 | 153,729 |
| Palau Country Quiz | 0 | - | 4.90 | 22,968 |
| Australia Country Quiz | 0 | - | 4.43 | 69,509 |
| Tuvalu Country Quiz | 0 | - | 4.86 | 21,413 |
| Tonga Country Quiz | 0 | - | 4.83 | 20,490 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,308 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,557 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,172 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,608 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,386 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,544 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,256 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,633 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,861 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,311 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,202 |
| Name the English Monarchs | 0 | - | 4.91 | 501,381 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,667 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,396 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,737 |
| Topological Map of Africa Quiz | 0 | - | 4.80 | 21,338 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,513 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,687,394 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,484 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,916 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,277 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,750 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,448 |
| The Trojan War | 0 | - | 4.83 | 39,642 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,003 |
| Name that Greek Letter | 0 | - | 4.93 | 323,064 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,515 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,406 |
| Roman Emperors | 0 | - | 4.95 | 119,642 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,133 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,081 |
| Prime Ministers of the UK | 0 | - | 4.95 | 437,726 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,682 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,333 |
| Animals of Australia | 0 | - | 4.52 | 42,285 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,404 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,630 |
| History of Russia Quiz | 0 | - | 4.49 | 31,878 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,189 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,487 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,495 |
| History of Italy | 0 | - | 4.55 | 31,935 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,608 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,649 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,158 |
| Geography of Spain | 0 | - | 4.59 | 22,047 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,788 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,464 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,839 |
| Names of Generations | 0 | - | 4.10 | 44,044 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,796 |
| American History Quotes #1 | 0 | - | 4.37 | 95,955 |
| American History Quotes #2 | 0 | - | 4.38 | 41,369 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,213 |
| Europe Map Quiz | 0 | - | 5.00 | 4,754,948 |
| Topological Map of Mainland Europe | 0 | - | 4.39 | 28,773 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,070 |
| German Groups of Things | 0 | - | 4.46 | 38,431 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,530 |
| Ancient Greek Words | 0 | - | 4.93 | 111,328 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,991 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,058 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,635 |
| Geography of Egypt | 0 | - | 4.60 | 21,490 |
| Inventions by Country #1 | 0 | - | 4.47 | 54,992 |
| History of India | 0 | - | 4.61 | 21,394 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,446 |
| History of South Africa | 0 | - | 4.60 | 17,659 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,456 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,049 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,297 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,139 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,511 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,986 |
| Official European Union Languages | 0 | - | 4.97 | 238,091 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,593 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,451 |
| History of Austria | 0 | - | 4.70 | 17,831 |
| Geography of the French Empire | 0 | - | 4.45 | 27,021 |
| The French Revolution | 0 | - | 4.46 | 23,900 |
| History of France | 0 | - | 4.59 | 56,814 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,461 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,401 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,127 |
| The Vikings! | 0 | - | 4.46 | 28,319 |
| The Portuguese Empire | 0 | - | 4.58 | 12,045 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,304 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,286 |
| Geography of the British Empire | 0 | - | 4.48 | 39,628 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,404 |
| Asia Map Quiz | 0 | - | 4.99 | 914,295 |
| History of Iran | 0 | - | 4.66 | 16,338 |
| Geography of China | 0 | - | 4.21 | 13,933 |
| History of China | 0 | - | 4.37 | 57,032 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,923 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,573 |
| Countries by Founding Story | 0 | - | 4.95 | 77,035 |
| Independence from Whom | 0 | - | 4.99 | 211,239 |
| Political Movements by Country | 0 | - | 4.46 | 72,460 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,644 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,360 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,385 |
| Countries that Beat India | 0 | - | 4.41 | 62,858 |
| Countries of Africa | 0 | - | 5.00 | 2,529,478 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,581 |
| African East Coast | 0 | - | 4.96 | 95,796 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,594 |
| Countries that Beat South Africa | 0 | - | 4.69 | 42,265 |
| Countries that Beat D.R. Congo | 0 | - | 4.74 | 41,702 |
| Marshall Islands Country Quiz | 0 | - | 4.62 | 20,658 |
| Fiji Country Quiz | 0 | - | 4.78 | 24,234 |
| Kiribati Country Quiz | 0 | - | 4.70 | 19,013 |
| Federated States of Micronesia Country Quiz | 0 | - | 4.63 | 21,650 |
| Australia Map Quiz | 0 | - | 4.95 | 343,800 |
| AFL Teams | 0 | - | 4.40 | 40,253 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,845 |
| Vanuatu Country Quiz | 0 | - | 4.59 | 22,865 |
| Solomon Islands Country Quiz | 0 | - | 4.56 | 19,039 |
| Nauru Country Quiz | 0 | - | 4.53 | 23,296 |
| Papua New Guinea Country Quiz | 0 | - | 4.60 | 30,646 |
| Samoa Country Quiz | 0 | - | 4.80 | 20,771 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,711 |
| History of Mexico | 0 | - | 4.58 | 15,290 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,592 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,036 |
| 75 Americans Named John | 0 | - | 4.41 | 23,888 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,089 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,589 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,417 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,702 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,572 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,184 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,497 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,903 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,874 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,797 |
| The Only European Country ... | 0 | - | 4.91 | 215,939 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,751 |
| Austria... or Australia? | 0 | - | 4.68 | 104,229 |
| Word Chain - France | 0 | - | 4.38 | 42,735 |
| French History Multiple Choice | 0 | - | 4.55 | 32,999 |
| History of Germany | 0 | - | 4.39 | 52,777 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,860 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,932 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,875 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,448 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,602 |
| Italian Foods | 0 | - | 4.30 | 72,624 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,241 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,689 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,851 |
| Roman Names for Places | 0 | - | 4.62 | 58,172 |
| Byzantine History | 0 | - | 4.91 | 28,751 |
| History of The Netherlands | 0 | - | 4.46 | 17,403 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,292 |
