| The Trojan War | 0 | - | 4.83 | 39,920 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,627 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,440 |
| Name that Greek Letter | 0 | - | 4.93 | 324,593 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,163 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,997 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,448 |
| Roman Emperors | 0 | - | 4.95 | 120,801 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,122 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,779 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,049 |
| Name the English Monarchs | 0 | - | 4.91 | 505,160 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,552 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 43,972 |
| Geography of the Roman Empire | 0 | - | 4.56 | 52,142 |
| Roman Names for Places | 0 | - | 4.62 | 58,594 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,392 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,323 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,827 |
| Medieval English History | 0 | - | 4.53 | 43,616 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,033 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,535 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,442 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,580 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,349 |
| Countries Bordering France | 0 | - | 4.83 | 404,253 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,248 |
| Ancient Greek Words | 0 | - | 4.93 | 112,197 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,231 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,894 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,863 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,264 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,045 |
| Europe Map Quiz | 0 | - | 5.00 | 4,779,308 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,866 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,485 |
| Departments of France | 0 | - | 4.93 | 54,809 |
| Germany Country Quiz | 0 | - | 4.83 | 158,535 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,865 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,982 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,847 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,691 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,296 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,549 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,398 |
| England or Wales? | 0 | - | 4.94 | 45,877 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,679 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,000 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,813 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,058 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,367 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,984 |
| Greece Country Quiz | 0 | - | 4.74 | 66,519 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,208 |
| Counties of Ireland | 0 | - | 4.92 | 196,749 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,142 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,003 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,731 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,819 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,338 |
| History of Scotland | 0 | - | 4.51 | 21,148 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,936 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,157 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,052 |
| Kings of France Quiz | 0 | - | 4.20 | 32,866 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,083 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,046 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,909 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,274 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,549 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,990 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,704 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,211 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,984 |
| English Royal Consorts | 0 | - | 4.38 | 37,472 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,190 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,648 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,640 |
| The Only European Country ... | 0 | - | 4.91 | 218,224 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,087 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,060 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,231 |
| History of Russia Quiz | 0 | - | 4.47 | 31,979 |
| French History Multiple Choice | 0 | - | 4.55 | 33,169 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,374 |
| History of Italy | 0 | - | 4.55 | 32,104 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,772 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,370 |
| Counties of England | 0 | - | 4.97 | 800,943 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,034 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,786 |
| History of London | 0 | - | 4.33 | 26,243 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,893 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,860 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,242 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,803 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,131 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,572 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,051 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 174,739 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,896 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,605 |
| Slavic Countries | 0 | - | 4.96 | 112,143 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,690 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,909 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,398 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,809 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,823 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,548 |
| Champions League Winners | 0 | - | 4.92 | 1,012,621 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,504 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,286 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,196 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,132 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,245 |
| Monarchies of Europe | 0 | - | 4.90 | 98,586 |
| European Countries with One Border | 0 | - | 4.97 | 183,455 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,208 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 88,136 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,732 |
| Countries That Border Russia | 0 | - | 4.98 | 463,802 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,301 |
| History of Austria | 0 | - | 4.70 | 17,946 |
| Austria Country Quiz | 0 | - | 4.57 | 59,955 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,096 |
| France Country Quiz | 0 | - | 4.70 | 135,426 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,261 |
| Geography of the French Empire | 0 | - | 4.45 | 27,191 |
| The French Revolution | 0 | - | 4.47 | 24,105 |
| History of France | 0 | - | 4.61 | 57,442 |
| French History A-Z | 0 | - | 4.27 | 24,931 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,489 |
| States of Germany | 0 | - | 4.95 | 153,893 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,536 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,500 |
| Regions of Italy | 0 | - | 4.92 | 76,614 |
| Italy Country Quiz | 0 | - | 4.77 | 123,850 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,885 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,632 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,801 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,629 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,641 |
| The Vikings! | 0 | - | 4.46 | 28,387 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,301 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,180 |
| The Portuguese Empire | 0 | - | 4.58 | 12,093 |
| Spain Country Quiz | 0 | - | 4.44 | 129,028 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,949 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,552 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,574 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,346 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,248 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,812 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,434 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,087 |
| Geography of the British Empire | 0 | - | 4.48 | 39,809 |
| Animals in British History | 0 | - | 4.43 | 26,064 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,799 |
| Counties of Wales | 0 | - | 4.63 | 39,501 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,717,521 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,536 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,568 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,512 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,278 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,612 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,758 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,984 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,059 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,316 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,741 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,466 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,528 |
| Countries that Border Poland | 0 | - | 4.99 | 172,897 |
| Russia Country Quiz | 0 | - | 4.83 | 115,110 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,113 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,172 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,596 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,868 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,498 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,883 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,933 |
| German Inventions | 0 | - | 3.91 | 30,265 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,669 |
| Roman to Greek God | 0 | - | 4.52 | 123,178 |
| History of Ireland | 0 | - | 4.39 | 31,362 |
| Italian History A-Z | 0 | - | 4.21 | 17,825 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,154 |
| Roman History by Picture | 0 | - | 4.46 | 26,545 |
| Byzantine History | 0 | - | 4.91 | 28,983 |
| Byzantine Emperors | 0 | - | 4.92 | 14,479 |
| History of The Netherlands | 0 | - | 4.46 | 17,521 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,152 |
| Finland Country Quiz | 0 | - | 4.51 | 59,891 |
| Norway Country Quiz | 0 | - | 4.45 | 77,662 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,317 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,538 |
| Spanish History A-Z | 0 | - | 4.37 | 19,416 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,613 |
| UK Immigration by Country | 0 | - | 4.94 | 141,417 |
| Arthurian Legend | 0 | - | 4.33 | 25,143 |
