| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,503 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,900 |
| Australian Capitals | 0 | - | 4.92 | 62,804 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,007 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,577 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,436 |
| Topological Map of Asia Quiz | 0 | - | 4.82 | 20,355 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,115 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,256 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,345 |
| Australian States and Territories | 0 | - | 4.96 | 142,622 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,447 |
| Australia True or False | 0 | - | 4.87 | 57,074 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,795 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,341 |
| New Zealand Country Quiz | 0 | - | 4.70 | 76,209 |
| Non-Stop Flights to New Zealand | 0 | - | 4.46 | 48,200 |
| Countries that Beat New Zealand | 0 | - | 4.70 | 26,736 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,451 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,103 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,402 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,366 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,618 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,684 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,332 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,058 |
| Flags of Oceania | 0 | - | 5.00 | 261,832 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.97 | 27,562 |
| Word Chain - Australia | 0 | - | 4.38 | 38,216 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,883 |
| Regions of New Zealand | 0 | - | 4.84 | 28,667 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,509 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,087 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,686 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,490 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,625 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,382 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,886 |
| Palau Country Quiz | 0 | - | 4.90 | 23,107 |
| Australia Country Quiz | 0 | - | 4.43 | 69,779 |
| Tuvalu Country Quiz | 0 | - | 4.86 | 21,519 |
| Samoa Country Quiz | 0 | - | 4.81 | 20,917 |
| Tonga Country Quiz | 0 | - | 4.83 | 20,589 |
| South American Geography Quiz #2 | 0 | - | 4.41 | 43,422 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,820 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,290 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,829 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,692 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,132 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,454 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,431 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,732 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,608 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,463 |
| Name the English Monarchs | 0 | - | 4.91 | 505,406 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,776 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,453 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,572 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,335 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,941 |
| Name a Valid African Country | 0 | - | 4.98 | 154,801 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,333 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,718,871 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,571 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,331 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,809 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,801 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,393 |
| The Trojan War | 0 | - | 4.83 | 39,933 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,709 |
| Name that Greek Letter | 0 | - | 4.93 | 324,669 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,676 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,483 |
| Roman Emperors | 0 | - | 4.95 | 120,890 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,729 |
| Prime Ministers of the UK | 0 | - | 4.95 | 441,385 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,331 |
| Topological Map of Africa Quiz | 0 | - | 4.80 | 21,550 |
| Animals of Australia | 0 | - | 4.52 | 42,438 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,562 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,712 |
| History of Russia Quiz | 0 | - | 4.47 | 31,985 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,311 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,984 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,129 |
| History of Italy | 0 | - | 4.55 | 32,108 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,783 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,144 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,380 |
| Geography of Spain | 0 | - | 4.59 | 22,149 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,039 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,926 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,666 |
| AFL Teams | 0 | - | 4.42 | 40,720 |
| Names of Generations | 0 | - | 4.09 | 45,393 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,967 |
| American History Quotes #1 | 0 | - | 4.37 | 96,168 |
| American History Quotes #2 | 0 | - | 4.38 | 41,484 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,314 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,733 |
| Topological Map of Mainland Europe | 0 | - | 4.39 | 29,003 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,900 |
| German Groups of Things | 0 | - | 4.47 | 38,596 |
| Ancient Greek Words | 0 | - | 4.93 | 112,241 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,413 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,652 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,304 |
| Geography of Egypt | 0 | - | 4.60 | 21,584 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,038 |
| Inventions by Country #1 | 0 | - | 4.47 | 55,153 |
| History of South Africa | 0 | - | 4.60 | 17,742 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,668 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,128 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,342 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,750 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,585 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,578 |
| Official European Union Languages | 0 | - | 4.97 | 239,444 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,445 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,180 |
| History of Austria | 0 | - | 4.70 | 17,952 |
| Geography of the French Empire | 0 | - | 4.45 | 27,194 |
| The French Revolution | 0 | - | 4.47 | 24,110 |
| History of France | 0 | - | 4.61 | 57,465 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,542 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,371 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,064 |
| The Vikings! | 0 | - | 4.46 | 28,391 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,436 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,113 |
| Geography of the British Empire | 0 | - | 4.48 | 39,813 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,097 |
| Asia Map Quiz | 0 | - | 4.99 | 923,053 |
| History of Iran | 0 | - | 4.66 | 16,404 |
| Geography of China | 0 | - | 4.21 | 14,001 |
| History of China | 0 | - | 4.35 | 57,471 |
| History of India | 0 | - | 4.62 | 21,489 |
| Africa Map Quiz | 0 | - | 5.00 | 2,125,981 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,822 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,027 |
| Countries by Founding Story | 0 | - | 4.95 | 77,616 |
| Independence from Whom | 0 | - | 4.99 | 212,653 |
| Political Movements by Country | 0 | - | 4.46 | 72,708 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,144 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,720 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,307 |
| Countries that Beat South Africa | 0 | - | 4.69 | 42,614 |
| Countries that Beat D.R. Congo | 0 | - | 4.75 | 41,958 |
| Marshall Islands Country Quiz | 0 | - | 4.62 | 20,767 |
| Fiji Country Quiz | 0 | - | 4.78 | 24,385 |
| Kiribati Country Quiz | 0 | - | 4.70 | 19,126 |
| Federated States of Micronesia Country Quiz | 0 | - | 4.63 | 21,775 |
| Australia Map Quiz | 0 | - | 4.95 | 345,773 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,150 |
| Vanuatu Country Quiz | 0 | - | 4.59 | 23,007 |
| Solomon Islands Country Quiz | 0 | - | 4.56 | 19,146 |
| Nauru Country Quiz | 0 | - | 4.53 | 23,418 |
| Papua New Guinea Country Quiz | 0 | - | 4.60 | 30,801 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,833 |
| History of Mexico | 0 | - | 4.52 | 15,355 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,847 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,347 |
| 75 Americans Named John | 0 | - | 4.41 | 23,956 |
| Events in U.S. History | 0 | - | 4.41 | 28,782 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,172 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,674 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,807 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,444 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,839 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,279 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,724 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,220 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,742 |
| The Only European Country ... | 0 | - | 4.91 | 218,356 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,159 |
| European Geographic Groups of Four | 0 | - | 4.54 | 19,626 |
| Austria... or Australia? | 0 | - | 4.68 | 104,659 |
| Word Chain - France | 0 | - | 4.38 | 42,899 |
| French History Multiple Choice | 0 | - | 4.55 | 33,179 |
| History of Germany | 0 | - | 4.39 | 52,945 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,409 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,174 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,003 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,147 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,790 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,922 |
| Italian Foods | 0 | - | 4.30 | 73,135 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,561 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 44,068 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,154 |
| Roman Names for Places | 0 | - | 4.62 | 58,608 |
| Byzantine History | 0 | - | 4.91 | 28,988 |
| Byzantine Emperors | 0 | - | 4.92 | 14,503 |
| History of The Netherlands | 0 | - | 4.46 | 17,529 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,558 |
| Most Common First Names in Spain | 0 | - | 4.32 | 54,789 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,284 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,998 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,909 |
