| The Trojan War | 0 | - | 4.83 | 39,719 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,812 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,276 |
| Name that Greek Letter | 0 | - | 4.93 | 323,401 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,991 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,909 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,517 |
| Roman Emperors | 0 | - | 4.95 | 120,000 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,649 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,655 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,930 |
| Name the English Monarchs | 0 | - | 4.91 | 502,523 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,498 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,739 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,921 |
| Roman Names for Places | 0 | - | 4.62 | 58,275 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,339 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,995 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,718 |
| Medieval English History | 0 | - | 4.53 | 43,504 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,188 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 81,607 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,631 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,971 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,850 |
| Countries Bordering France | 0 | - | 4.83 | 402,485 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,350 |
| Ancient Greek Words | 0 | - | 4.93 | 111,575 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,183 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,788 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,650 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,140 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,958 |
| Europe Map Quiz | 0 | - | 5.00 | 4,762,253 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,679 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,715 |
| Departments of France | 0 | - | 4.93 | 54,077 |
| Germany Country Quiz | 0 | - | 4.82 | 157,822 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,311 |
| Italy Country Quiz | 0 | - | 4.82 | 123,386 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,340 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,015 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,544 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,915 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,628 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,570 |
| England or Wales? | 0 | - | 4.94 | 45,682 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,487 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,764 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,306 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,862 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,170 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,625 |
| Greece Country Quiz | 0 | - | 4.74 | 66,243 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,137 |
| Counties of Ireland | 0 | - | 4.92 | 195,205 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,851 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,015 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,947 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,652 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,259 |
| History of Scotland | 0 | - | 4.51 | 21,090 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,642 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,822 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,145 |
| Kings of France Quiz | 0 | - | 4.20 | 32,741 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,951 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,398 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,897 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,321 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,473 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,332 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,927 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,383 |
| English Royal Consorts | 0 | - | 4.37 | 37,345 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,985 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,409 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,198 |
| The Only European Country ... | 0 | - | 4.91 | 216,564 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,084 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,243,720 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,480 |
| History of Russia Quiz | 0 | - | 4.47 | 31,914 |
| French History Multiple Choice | 0 | - | 4.55 | 33,034 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,958 |
| History of Italy | 0 | - | 4.55 | 31,970 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,656 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,227 |
| Counties of England | 0 | - | 4.97 | 796,539 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,857 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,713 |
| History of London | 0 | - | 4.33 | 26,189 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,580 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,844 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,646 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,183 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,650 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,136 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,443 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,685 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,261 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,173 |
| Slavic Countries | 0 | - | 4.96 | 111,637 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,462 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,032 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,125 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,488 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,749 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,499 |
| Champions League Winners | 0 | - | 4.92 | 1,006,486 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,834 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,495 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,274 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,729 |
| Monarchies of Europe | 0 | - | 4.90 | 98,125 |
| European Countries with One Border | 0 | - | 4.97 | 182,754 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,553 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,474 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,091 |
| Countries That Border Russia | 0 | - | 4.98 | 461,675 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,884 |
| History of Austria | 0 | - | 4.70 | 17,860 |
| Austria Country Quiz | 0 | - | 4.57 | 59,725 |
| Belgium Country Quiz | 0 | - | 4.73 | 71,785 |
| France Country Quiz | 0 | - | 4.70 | 134,960 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,390 |
| Geography of the French Empire | 0 | - | 4.45 | 27,057 |
| The French Revolution | 0 | - | 4.46 | 23,929 |
| History of France | 0 | - | 4.59 | 56,964 |
| French History A-Z | 0 | - | 4.27 | 24,630 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,791 |
| States of Germany | 0 | - | 4.96 | 152,498 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,018 |
| Regions of Italy | 0 | - | 4.92 | 75,845 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,746 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,493 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,517 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,133 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,452 |
| The Vikings! | 0 | - | 4.46 | 28,342 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,121 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,884 |
| The Portuguese Empire | 0 | - | 4.58 | 12,064 |
| Spain Country Quiz | 0 | - | 4.45 | 128,511 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,919 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,359 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,183 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,983 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,028 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,715 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,349 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,458 |
| Geography of the British Empire | 0 | - | 4.48 | 39,669 |
| Animals in British History | 0 | - | 4.43 | 26,003 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,693 |
| Counties of Wales | 0 | - | 4.63 | 39,265 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,842 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,697,656 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,762 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,093 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,981 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,102 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,375 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,434 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,201 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,783 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,091 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,033 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,912 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,681 |
| Countries that Border Poland | 0 | - | 4.99 | 172,255 |
| Russia Country Quiz | 0 | - | 4.85 | 114,454 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,837 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,775 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,329 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,212 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,336 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,379 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,793 |
| German Inventions | 0 | - | 3.91 | 30,235 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,629 |
| Roman to Greek God | 0 | - | 4.52 | 122,801 |
| History of Ireland | 0 | - | 4.39 | 31,171 |
| Italian History A-Z | 0 | - | 4.21 | 17,704 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,083 |
| Roman History by Picture | 0 | - | 4.46 | 26,463 |
| Byzantine History | 0 | - | 4.91 | 28,862 |
| Byzantine Emperors | 0 | - | 4.92 | 14,041 |
| History of The Netherlands | 0 | - | 4.46 | 17,431 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,904 |
| Finland Country Quiz | 0 | - | 4.50 | 59,660 |
| Norway Country Quiz | 0 | - | 4.44 | 77,322 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,154 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,965 |
| Spanish History A-Z | 0 | - | 4.37 | 19,290 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,425 |
| UK Immigration by Country | 0 | - | 4.94 | 140,876 |
| Arthurian Legend | 0 | - | 4.33 | 25,109 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,755 |
| British Monopoly Board | 0 | - | 4.52 | 41,164 |
