| The Trojan War | 0 | - | 4.83 | 39,400 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,376 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,295 |
| Name that Greek Letter | 0 | - | 4.94 | 321,457 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,742 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,754 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,985 |
| Roman Emperors | 0 | - | 4.95 | 118,317 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,806 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,407 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,089 |
| Name the English Monarchs | 0 | - | 4.92 | 497,459 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,413 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,513 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,646 |
| Roman Names for Places | 0 | - | 4.62 | 57,827 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,285 |
| Olympian Gods Quiz | 0 | - | 4.96 | 494,992 |
| Medieval English History | 0 | - | 4.53 | 43,294 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,795 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,311 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,262 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,005 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,925 |
| Countries Bordering France | 0 | - | 4.85 | 397,087 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,749 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,486 |
| Ancient Greek Words | 0 | - | 4.92 | 110,559 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,108 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,258 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,936 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,816 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,011 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,076 |
| Departments of France | 0 | - | 4.93 | 52,684 |
| Germany Country Quiz | 0 | - | 4.82 | 156,418 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,068 |
| Italy Country Quiz | 0 | - | 4.82 | 122,092 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,265 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 150,992 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,344 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,878 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,530 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,127 |
| England or Wales? | 0 | - | 4.94 | 45,284 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,101 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,492 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,666 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,474 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,758 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,072 |
| Greece Country Quiz | 0 | - | 4.74 | 65,708 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,972 |
| Counties of Ireland | 0 | - | 4.92 | 192,832 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,378 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,189 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,154 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,454 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,102 |
| History of Scotland | 0 | - | 4.51 | 20,991 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,619 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,709 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,910 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,360 |
| Kings of France Quiz | 0 | - | 4.20 | 32,539 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,644 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,270 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,707 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,915 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,810 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,606 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,404 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,101 |
| English Royal Consorts | 0 | - | 4.37 | 37,141 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,588 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,765 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,096 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,364 |
| The Only European Country ... | 0 | - | 4.91 | 213,537 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,348 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,224,494 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,713 |
| History of Russia Quiz | 0 | - | 4.49 | 31,774 |
| French History Multiple Choice | 0 | - | 4.55 | 32,857 |
| Countries that Beat Greece | 0 | - | 4.52 | 48,545 |
| History of Italy | 0 | - | 4.55 | 31,800 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,465 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,963 |
| Counties of England | 0 | - | 4.97 | 788,451 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,358 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,599 |
| History of London | 0 | - | 4.33 | 26,093 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,042 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,261 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,600 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,207 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,076 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,414 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,589 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,582 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,170 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,080 |
| Slavic Countries | 0 | - | 4.96 | 110,780 |
| Famous Ancient Romans | 0 | - | 4.69 | 84,990 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,159 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,554 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,942 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,596 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,424 |
| Champions League Winners | 0 | - | 4.92 | 995,236 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,270 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 94,971 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,237 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,689 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,681 |
| Monarchies of Europe | 0 | - | 4.90 | 97,225 |
| European Countries with One Border | 0 | - | 4.97 | 181,484 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 177,994 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,129 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,640 |
| Countries That Border Russia | 0 | - | 4.98 | 458,596 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,110 |
| History of Austria | 0 | - | 4.70 | 17,738 |
| Austria Country Quiz | 0 | - | 4.57 | 59,290 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,172 |
| France Country Quiz | 0 | - | 4.70 | 133,736 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,016 |
| Geography of the French Empire | 0 | - | 4.48 | 26,915 |
| The French Revolution | 0 | - | 4.46 | 23,752 |
| History of France | 0 | - | 4.59 | 55,901 |
| French History A-Z | 0 | - | 4.17 | 18,607 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,570 |
| States of Germany | 0 | - | 4.96 | 149,822 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,372 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,921 |
| Regions of Italy | 0 | - | 4.92 | 74,607 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,449 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,201 |
| Netherlands Country Quiz | 0 | - | 4.50 | 79,912 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,745 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,720 |
| The Vikings! | 0 | - | 4.45 | 28,236 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,659 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,281 |
| The Portuguese Empire | 0 | - | 4.54 | 11,981 |
| Spain Country Quiz | 0 | - | 4.45 | 127,504 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,165 |
| Switzerland Country Quiz | 0 | - | 4.51 | 62,898 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,064 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,851 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,169 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,549 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,154 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,711 |
| Geography of the British Empire | 0 | - | 4.48 | 39,463 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,393 |
| Counties of Wales | 0 | - | 4.63 | 38,840 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,728 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,649,475 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,141 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,180 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,040 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,756 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,784 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,753 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,268 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,004 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,936 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,872 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,352 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,059 |
| Countries that Border Poland | 0 | - | 4.99 | 171,231 |
| Russia Country Quiz | 0 | - | 4.85 | 113,571 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,338 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,187 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,798 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,622 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,002 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,657 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,613 |
| German Inventions | 0 | - | 3.91 | 30,177 |
| Embarrassing Chapters in German History | 0 | - | 3.41 | 12,561 |
| Roman to Greek God | 0 | - | 4.52 | 122,136 |
| History of Ireland | 0 | - | 4.39 | 30,792 |
| Italian History A-Z | 0 | - | 4.21 | 17,353 |
| The Life of Julius Caesar | 0 | - | 4.39 | 38,937 |
| Roman History by Picture | 0 | - | 4.46 | 26,330 |
| Byzantine History | 0 | - | 4.91 | 28,586 |
| History of The Netherlands | 0 | - | 4.46 | 17,299 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,383 |
| Finland Country Quiz | 0 | - | 4.50 | 59,053 |
| Norway Country Quiz | 0 | - | 4.44 | 76,554 |
| Iceland Country Quiz | 0 | - | 4.69 | 42,829 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,684 |
| Spanish History A-Z | 0 | - | 4.36 | 19,009 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,030 |
| UK Immigration by Country | 0 | - | 4.94 | 139,503 |
| Arthurian Legend | 0 | - | 4.33 | 25,046 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 137,996 |
| British Monopoly Board | 0 | - | 4.52 | 41,022 |
