| The Trojan War | 0 | - | 4.83 | 39,474 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,736 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,781 |
| Name that Greek Letter | 0 | - | 4.94 | 321,903 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,805 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,795 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,120 |
| Roman Emperors | 0 | - | 4.95 | 118,652 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,993 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,474 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,540 |
| Name the English Monarchs | 0 | - | 4.92 | 498,645 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,432 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,566 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,722 |
| Roman Names for Places | 0 | - | 4.62 | 57,927 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,295 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,992 |
| Medieval English History | 0 | - | 4.53 | 43,343 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,095 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,551 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,584 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,229 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,133 |
| Countries Bordering France | 0 | - | 4.83 | 400,122 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,346 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,601 |
| Ancient Greek Words | 0 | - | 4.92 | 110,824 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,119 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,634 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,356 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,983 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,855 |
| Europe Map Quiz | 0 | - | 5.00 | 4,735,465 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,370 |
| Departments of France | 0 | - | 4.93 | 52,974 |
| Germany Country Quiz | 0 | - | 4.82 | 156,752 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,297 |
| Italy Country Quiz | 0 | - | 4.82 | 122,359 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,542 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,217 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,395 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,179 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,770 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,503 |
| England or Wales? | 0 | - | 4.94 | 45,383 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,194 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,549 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,858 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,587 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,862 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,640 |
| Greece Country Quiz | 0 | - | 4.74 | 65,827 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,012 |
| Counties of Ireland | 0 | - | 4.92 | 193,328 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,513 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,477 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,594 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,906 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,137 |
| History of Scotland | 0 | - | 4.51 | 21,016 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,839 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,850 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,603 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,447 |
| Kings of France Quiz | 0 | - | 4.20 | 32,581 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,748 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,511 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,236 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,027 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,957 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,761 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,530 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,517 |
| English Royal Consorts | 0 | - | 4.37 | 37,213 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,280 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,608 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,780 |
| The Only European Country ... | 0 | - | 4.91 | 214,203 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,796 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,229,037 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,001 |
| History of Russia Quiz | 0 | - | 4.49 | 31,804 |
| French History Multiple Choice | 0 | - | 4.55 | 32,895 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,641 |
| History of Italy | 0 | - | 4.55 | 31,850 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,503 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,010 |
| Counties of England | 0 | - | 4.97 | 790,171 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,606 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,631 |
| History of London | 0 | - | 4.33 | 26,111 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,197 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,667 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,830 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,417 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,640 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,571 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,146 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,467 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,393 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,314 |
| Slavic Countries | 0 | - | 4.96 | 110,972 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,068 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,050 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,676 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,521 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,632 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,436 |
| Champions League Winners | 0 | - | 4.92 | 997,603 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,453 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,122 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,541 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,050 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,924 |
| Monarchies of Europe | 0 | - | 4.90 | 97,434 |
| European Countries with One Border | 0 | - | 4.97 | 181,770 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,663 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,405 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,437 |
| Countries That Border Russia | 0 | - | 4.98 | 459,480 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,291 |
| History of Austria | 0 | - | 4.70 | 17,769 |
| Austria Country Quiz | 0 | - | 4.57 | 59,408 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,314 |
| France Country Quiz | 0 | - | 4.70 | 133,972 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,367 |
| Geography of the French Empire | 0 | - | 4.45 | 26,954 |
| The French Revolution | 0 | - | 4.46 | 23,810 |
| History of France | 0 | - | 4.59 | 56,246 |
| French History A-Z | 0 | - | 4.22 | 23,806 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,868 |
| States of Germany | 0 | - | 4.96 | 150,398 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,399 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,129 |
| Regions of Italy | 0 | - | 4.92 | 74,876 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,528 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,280 |
| Netherlands Country Quiz | 0 | - | 4.50 | 80,054 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,919 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,817 |
| The Vikings! | 0 | - | 4.46 | 28,258 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,736 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,433 |
| The Portuguese Empire | 0 | - | 4.54 | 12,002 |
| Spain Country Quiz | 0 | - | 4.45 | 127,741 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,534 |
| Switzerland Country Quiz | 0 | - | 4.51 | 62,991 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,443 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,136 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,297 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,585 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,219 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,910 |
| Geography of the British Empire | 0 | - | 4.48 | 39,520 |
| Animals in British History | 0 | - | 4.44 | 25,891 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,565 |
| Counties of Wales | 0 | - | 4.63 | 38,956 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,033 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,660,414 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,413 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,342 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,215 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,829 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 137,924 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,914 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,842 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,477 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,407 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,100 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,297 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,418 |
| Countries that Border Poland | 0 | - | 4.99 | 171,485 |
| Russia Country Quiz | 0 | - | 4.85 | 113,765 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,436 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,817 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,934 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,771 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,091 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,849 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,667 |
| German Inventions | 0 | - | 3.91 | 30,189 |
| Embarrassing Chapters in German History | 0 | - | 3.41 | 12,579 |
| Roman to Greek God | 0 | - | 4.52 | 122,306 |
| History of Ireland | 0 | - | 4.39 | 30,876 |
| Italian History A-Z | 0 | - | 4.21 | 17,566 |
| The Life of Julius Caesar | 0 | - | 4.39 | 38,976 |
| Roman History by Picture | 0 | - | 4.46 | 26,355 |
| Byzantine History | 0 | - | 4.91 | 28,653 |
| History of The Netherlands | 0 | - | 4.46 | 17,334 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,503 |
| Finland Country Quiz | 0 | - | 4.50 | 59,195 |
| Norway Country Quiz | 0 | - | 4.44 | 76,748 |
| Iceland Country Quiz | 0 | - | 4.69 | 42,906 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,100 |
| Spanish History A-Z | 0 | - | 4.37 | 19,178 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,121 |
| UK Immigration by Country | 0 | - | 4.94 | 139,814 |
| Arthurian Legend | 0 | - | 4.33 | 25,056 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,411 |
