| The Trojan War | 0 | - | 4.83 | 39,990 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,963 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,947 |
| Name that Greek Letter | 0 | - | 4.93 | 324,987 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,241 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,046 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,593 |
| Roman Emperors | 0 | - | 4.95 | 121,205 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,313 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,843 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,560 |
| Name the English Monarchs | 0 | - | 4.91 | 506,409 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,580 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,293 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,207 |
| Roman Names for Places | 0 | - | 4.62 | 58,712 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,412 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,450 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,771 |
| Medieval English History | 0 | - | 4.53 | 43,655 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,388 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,436 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,780 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,854 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,588 |
| Countries Bordering France | 0 | - | 4.83 | 404,924 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,872 |
| Ancient Greek Words | 0 | - | 4.93 | 112,468 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,265 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,968 |
| Houses of British Monarchs | 0 | - | 4.54 | 65,952 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,318 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,089 |
| Europe Map Quiz | 0 | - | 5.00 | 4,788,457 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,939 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,811 |
| Departments of France | 0 | - | 4.93 | 55,169 |
| Germany Country Quiz | 0 | - | 4.82 | 158,842 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,076 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,244 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,057 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,741 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,500 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,872 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,779 |
| England or Wales? | 0 | - | 4.94 | 45,969 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,751 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,087 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,952 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,149 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,481 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,660 |
| Greece Country Quiz | 0 | - | 4.74 | 66,645 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,240 |
| Counties of Ireland | 0 | - | 4.92 | 197,328 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,258 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,390 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,133 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,388 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,375 |
| History of Scotland | 0 | - | 4.51 | 21,175 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,073 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,306 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,910 |
| Kings of France Quiz | 0 | - | 4.21 | 32,930 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,144 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,323 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,967 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,861 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,655 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,176 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,883 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,354 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,344 |
| English Royal Consorts | 0 | - | 4.38 | 37,526 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,814 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,253 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,134 |
| The Only European Country ... | 0 | - | 4.91 | 219,038 |
| European Countries NOT in NATO | 0 | - | 4.90 | 62,528 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,258,218 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,335,715 |
| History of Russia Quiz | 0 | - | 4.47 | 32,005 |
| French History Multiple Choice | 0 | - | 4.55 | 33,234 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,498 |
| History of Italy | 0 | - | 4.55 | 32,148 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,822 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,425 |
| Counties of England | 0 | - | 4.97 | 802,983 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,098 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,829 |
| History of London | 0 | - | 4.33 | 26,271 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,059 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,745 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,517 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,064 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,818 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,778 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,761 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,810 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,190 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,798 |
| Slavic Countries | 0 | - | 4.96 | 112,376 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,779 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,834 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,503 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,470 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,871 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,565 |
| Champions League Winners | 0 | - | 4.92 | 1,016,213 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,927 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,754 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,511 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,601 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,476 |
| Monarchies of Europe | 0 | - | 4.90 | 98,881 |
| European Countries with One Border | 0 | - | 4.97 | 183,807 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,548 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,829 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,498 |
| Countries That Border Russia | 0 | - | 4.98 | 464,516 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,478 |
| History of Austria | 0 | - | 4.70 | 17,973 |
| Austria Country Quiz | 0 | - | 4.57 | 60,057 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,257 |
| France Country Quiz | 0 | - | 4.70 | 135,666 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,649 |
| Geography of the French Empire | 0 | - | 4.45 | 27,218 |
| The French Revolution | 0 | - | 4.47 | 24,148 |
| History of France | 0 | - | 4.61 | 57,620 |
| French History A-Z | 0 | - | 4.27 | 25,137 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,802 |
| States of Germany | 0 | - | 4.95 | 154,508 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,560 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,695 |
| Regions of Italy | 0 | - | 4.92 | 77,086 |
| Italy Country Quiz | 0 | - | 4.77 | 124,047 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,949 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,690 |
| Netherlands Country Quiz | 0 | - | 4.52 | 80,943 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,804 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,738 |
| The Vikings! | 0 | - | 4.46 | 28,406 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,390 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,320 |
| The Portuguese Empire | 0 | - | 4.58 | 12,106 |
| Spain Country Quiz | 0 | - | 4.44 | 129,251 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,321 |
| Switzerland Country Quiz | 0 | - | 4.52 | 63,644 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,767 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,527 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,372 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,859 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,464 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,256 |
| Geography of the British Empire | 0 | - | 4.48 | 39,848 |
| Animals in British History | 0 | - | 4.43 | 26,099 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,843 |
| Counties of Wales | 0 | - | 4.63 | 39,618 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,726,184 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,791 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,892 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,799 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,358 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,730 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,944 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,877 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,933 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,934 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,084 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,671 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,897 |
| Countries that Border Poland | 0 | - | 4.99 | 173,175 |
| Russia Country Quiz | 0 | - | 4.83 | 115,319 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,270 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,870 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,746 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,010 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,593 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,099 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,994 |
| German Inventions | 0 | - | 3.91 | 30,284 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,683 |
| Roman to Greek God | 0 | - | 4.52 | 123,349 |
| History of Ireland | 0 | - | 4.39 | 31,429 |
| Italian History A-Z | 0 | - | 4.16 | 17,930 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,178 |
| Roman History by Picture | 0 | - | 4.46 | 26,588 |
| Byzantine History | 0 | - | 4.91 | 29,022 |
| Byzantine Emperors | 0 | - | 4.93 | 14,598 |
| History of The Netherlands | 0 | - | 4.46 | 17,556 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,271 |
| Finland Country Quiz | 0 | - | 4.51 | 60,010 |
| Norway Country Quiz | 0 | - | 4.45 | 77,823 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,394 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,911 |
| Spanish History A-Z | 0 | - | 4.37 | 19,511 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,710 |
| UK Immigration by Country | 0 | - | 4.94 | 141,723 |
| Arthurian Legend | 0 | - | 4.33 | 25,178 |
