| The Trojan War | 0 | - | 4.83 | 39,974 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,905 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,688 |
| Name that Greek Letter | 0 | - | 4.93 | 324,917 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,223 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,038 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,574 |
| Roman Emperors | 0 | - | 4.95 | 121,149 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,278 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,838 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,477 |
| Name the English Monarchs | 0 | - | 4.91 | 506,226 |
| 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 | 58,688 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,412 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,427 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,624 |
| Medieval English History | 0 | - | 4.53 | 43,650 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,328 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,281 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,717 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,805 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,538 |
| Countries Bordering France | 0 | - | 4.83 | 404,805 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,749 |
| Ancient Greek Words | 0 | - | 4.93 | 112,426 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,258 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,956 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,940 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,310 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,086 |
| Europe Map Quiz | 0 | - | 5.00 | 4,786,879 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,924 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,768 |
| Departments of France | 0 | - | 4.93 | 55,111 |
| Germany Country Quiz | 0 | - | 4.82 | 158,795 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,048 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,188 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,007 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,731 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,462 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,831 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,702 |
| England or Wales? | 0 | - | 4.94 | 45,953 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,741 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,074 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,923 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,140 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,454 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,546 |
| Greece Country Quiz | 0 | - | 4.74 | 66,627 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,237 |
| Counties of Ireland | 0 | - | 4.92 | 197,234 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,239 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,341 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,074 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,318 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,367 |
| 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 | 97,283 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,764 |
| Kings of France Quiz | 0 | - | 4.20 | 32,924 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,132 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,275 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,959 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,764 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,639 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,152 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,857 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,329 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,242 |
| English Royal Consorts | 0 | - | 4.38 | 37,517 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,705 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,158 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,039 |
| The Only European Country ... | 0 | - | 4.91 | 218,890 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,451 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,257,296 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,335,362 |
| 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 | 49,484 |
| History of Italy | 0 | - | 4.55 | 32,142 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,815 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,418 |
| Counties of England | 0 | - | 4.97 | 802,611 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,088 |
| 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 | 79,035 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,440 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,469 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,014 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,662 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,743 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,654 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,624 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,145 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,754 |
| Slavic Countries | 0 | - | 4.96 | 112,338 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,768 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,663 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,493 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,366 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,866 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,563 |
| Champions League Winners | 0 | - | 4.92 | 1,015,720 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,774 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,452 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,444 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,520 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,448 |
| Monarchies of Europe | 0 | - | 4.90 | 98,831 |
| European Countries with One Border | 0 | - | 4.97 | 183,746 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,491 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,629 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,389 |
| Countries That Border Russia | 0 | - | 4.98 | 464,422 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,447 |
| History of Austria | 0 | - | 4.70 | 17,971 |
| Austria Country Quiz | 0 | - | 4.57 | 60,036 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,234 |
| France Country Quiz | 0 | - | 4.70 | 135,618 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,595 |
| Geography of the French Empire | 0 | - | 4.45 | 27,214 |
| The French Revolution | 0 | - | 4.47 | 24,145 |
| History of France | 0 | - | 4.61 | 57,585 |
| French History A-Z | 0 | - | 4.27 | 25,116 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,763 |
| States of Germany | 0 | - | 4.95 | 154,391 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,558 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,668 |
| Regions of Italy | 0 | - | 4.92 | 77,015 |
| Italy Country Quiz | 0 | - | 4.77 | 124,006 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,940 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,685 |
| Netherlands Country Quiz | 0 | - | 4.52 | 80,923 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,779 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,725 |
| The Vikings! | 0 | - | 4.46 | 28,401 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,374 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,301 |
| The Portuguese Empire | 0 | - | 4.58 | 12,104 |
| Spain Country Quiz | 0 | - | 4.44 | 129,221 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,280 |
| Switzerland Country Quiz | 0 | - | 4.52 | 63,629 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,739 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,503 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,355 |
| 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 | 123,227 |
| Geography of the British Empire | 0 | - | 4.48 | 39,844 |
| Animals in British History | 0 | - | 4.43 | 26,092 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,835 |
| Counties of Wales | 0 | - | 4.63 | 39,593 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,724,695 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,739 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,846 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,761 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,340 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,708 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,918 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,736 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,835 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,845 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,037 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,488 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,843 |
| Countries that Border Poland | 0 | - | 4.99 | 173,140 |
| Russia Country Quiz | 0 | - | 4.83 | 115,285 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,238 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,759 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,724 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,994 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,572 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,061 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,984 |
| German Inventions | 0 | - | 3.91 | 30,281 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,683 |
| Roman to Greek God | 0 | - | 4.52 | 123,325 |
| History of Ireland | 0 | - | 4.39 | 31,421 |
| Italian History A-Z | 0 | - | 4.16 | 17,924 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,173 |
| Roman History by Picture | 0 | - | 4.46 | 26,580 |
| Byzantine History | 0 | - | 4.91 | 29,017 |
| Byzantine Emperors | 0 | - | 4.93 | 14,581 |
| History of The Netherlands | 0 | - | 4.46 | 17,548 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,252 |
| Finland Country Quiz | 0 | - | 4.51 | 59,993 |
| Norway Country Quiz | 0 | - | 4.45 | 77,797 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,379 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,796 |
| Spanish History A-Z | 0 | - | 4.37 | 19,505 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,693 |
| UK Immigration by Country | 0 | - | 4.94 | 141,678 |
| Arthurian Legend | 0 | - | 4.33 | 25,173 |
