| The Trojan War | 0 | - | 4.83 | 39,973 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,902 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,672 |
| Name that Greek Letter | 0 | - | 4.93 | 324,912 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,222 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,037 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,572 |
| Roman Emperors | 0 | - | 4.95 | 121,146 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,274 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,838 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,465 |
| Name the English Monarchs | 0 | - | 4.91 | 506,208 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,571 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,275 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,198 |
| Roman Names for Places | 0 | - | 4.62 | 58,685 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,411 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,426 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,616 |
| Medieval English History | 0 | - | 4.53 | 43,649 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,322 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,272 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,709 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,800 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,533 |
| Countries Bordering France | 0 | - | 4.83 | 404,789 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,742 |
| Ancient Greek Words | 0 | - | 4.93 | 112,422 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,258 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,953 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,939 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,309 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,086 |
| Europe Map Quiz | 0 | - | 5.00 | 4,786,676 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,924 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,764 |
| Departments of France | 0 | - | 4.93 | 55,108 |
| Germany Country Quiz | 0 | - | 4.82 | 158,789 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,048 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,185 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,005 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,731 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,460 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,825 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,697 |
| England or Wales? | 0 | - | 4.94 | 45,953 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,739 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,074 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,921 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,140 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,453 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,535 |
| Greece Country Quiz | 0 | - | 4.74 | 66,626 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,237 |
| Counties of Ireland | 0 | - | 4.92 | 197,226 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,234 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,335 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,070 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,312 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,366 |
| History of Scotland | 0 | - | 4.51 | 21,173 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,045 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,282 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,744 |
| Kings of France Quiz | 0 | - | 4.20 | 32,923 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,131 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,272 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,959 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,749 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,636 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,145 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,856 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,328 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,241 |
| English Royal Consorts | 0 | - | 4.38 | 37,515 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,701 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,155 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,035 |
| The Only European Country ... | 0 | - | 4.91 | 218,883 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,450 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,257,211 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,335,305 |
| History of Russia Quiz | 0 | - | 4.47 | 32,000 |
| French History Multiple Choice | 0 | - | 4.55 | 33,221 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,481 |
| History of Italy | 0 | - | 4.55 | 32,141 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,813 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,418 |
| Counties of England | 0 | - | 4.97 | 802,581 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,087 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,824 |
| History of London | 0 | - | 4.33 | 26,271 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,032 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,416 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,468 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,012 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,656 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,741 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,647 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,613 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,143 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,751 |
| Slavic Countries | 0 | - | 4.96 | 112,333 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,768 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,657 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,492 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,352 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,865 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,563 |
| Champions League Winners | 0 | - | 4.92 | 1,015,652 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,754 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,451 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,444 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,514 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,444 |
| Monarchies of Europe | 0 | - | 4.90 | 98,827 |
| European Countries with One Border | 0 | - | 4.97 | 183,741 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,485 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,610 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,388 |
| Countries That Border Russia | 0 | - | 4.98 | 464,413 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,444 |
| History of Austria | 0 | - | 4.70 | 17,971 |
| Austria Country Quiz | 0 | - | 4.57 | 60,035 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,233 |
| France Country Quiz | 0 | - | 4.70 | 135,617 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,592 |
| Geography of the French Empire | 0 | - | 4.45 | 27,214 |
| The French Revolution | 0 | - | 4.47 | 24,144 |
| History of France | 0 | - | 4.61 | 57,585 |
| French History A-Z | 0 | - | 4.27 | 25,114 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,763 |
| States of Germany | 0 | - | 4.95 | 154,388 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,558 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,667 |
| Regions of Italy | 0 | - | 4.92 | 77,012 |
| Italy Country Quiz | 0 | - | 4.77 | 124,006 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,938 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,685 |
| Netherlands Country Quiz | 0 | - | 4.52 | 80,922 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,779 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,724 |
| The Vikings! | 0 | - | 4.46 | 28,400 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,373 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,299 |
| The Portuguese Empire | 0 | - | 4.58 | 12,103 |
| Spain Country Quiz | 0 | - | 4.44 | 129,219 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,272 |
| Switzerland Country Quiz | 0 | - | 4.52 | 63,629 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,735 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,497 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,352 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,853 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,455 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,225 |
| Geography of the British Empire | 0 | - | 4.48 | 39,844 |
| Animals in British History | 0 | - | 4.43 | 26,091 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,834 |
| Counties of Wales | 0 | - | 4.63 | 39,586 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,724,511 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,737 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,844 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,757 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,338 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,706 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,918 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,723 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,828 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,832 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,029 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,466 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,838 |
| Countries that Border Poland | 0 | - | 4.99 | 173,138 |
| Russia Country Quiz | 0 | - | 4.83 | 115,284 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,237 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,746 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,721 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,990 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,570 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,054 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,983 |
| German Inventions | 0 | - | 3.91 | 30,281 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,683 |
| Roman to Greek God | 0 | - | 4.52 | 123,324 |
| History of Ireland | 0 | - | 4.39 | 31,421 |
| Italian History A-Z | 0 | - | 4.16 | 17,923 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,173 |
| Roman History by Picture | 0 | - | 4.46 | 26,579 |
| Byzantine History | 0 | - | 4.91 | 29,015 |
| Byzantine Emperors | 0 | - | 4.93 | 14,579 |
| History of The Netherlands | 0 | - | 4.46 | 17,547 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,250 |
| Finland Country Quiz | 0 | - | 4.51 | 59,992 |
| Norway Country Quiz | 0 | - | 4.45 | 77,797 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,379 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,793 |
| Spanish History A-Z | 0 | - | 4.37 | 19,504 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,690 |
| UK Immigration by Country | 0 | - | 4.94 | 141,674 |
| Arthurian Legend | 0 | - | 4.33 | 25,173 |
