| The Trojan War | 0 | - | 4.83 | 39,452 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,617 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,209 |
| Name that Greek Letter | 0 | - | 4.94 | 321,770 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,786 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,776 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,079 |
| Roman Emperors | 0 | - | 4.95 | 118,552 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,941 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,449 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,383 |
| Name the English Monarchs | 0 | - | 4.92 | 498,178 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,425 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,545 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,689 |
| Roman Names for Places | 0 | - | 4.62 | 57,894 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,292 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,538 |
| Medieval English History | 0 | - | 4.53 | 43,331 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,010 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,474 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,480 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,166 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,066 |
| Countries Bordering France | 0 | - | 4.83 | 399,572 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,166 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,545 |
| Ancient Greek Words | 0 | - | 4.92 | 110,739 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,118 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,313 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,968 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,843 |
| Europe Map Quiz | 0 | - | 5.00 | 4,732,798 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,267 |
| Departments of France | 0 | - | 4.93 | 52,877 |
| Germany Country Quiz | 0 | - | 4.82 | 156,633 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,201 |
| Italy Country Quiz | 0 | - | 4.82 | 122,279 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,450 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,134 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,381 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,119 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,704 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,369 |
| England or Wales? | 0 | - | 4.94 | 45,346 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,167 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,530 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,816 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,558 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,828 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,430 |
| Greece Country Quiz | 0 | - | 4.74 | 65,782 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,991 |
| Counties of Ireland | 0 | - | 4.92 | 193,172 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,475 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,383 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,375 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,724 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,132 |
| History of Scotland | 0 | - | 4.51 | 21,010 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,782 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,801 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,387 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,420 |
| Kings of France Quiz | 0 | - | 4.20 | 32,568 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,720 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,428 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,058 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,984 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,906 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,708 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,490 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,383 |
| English Royal Consorts | 0 | - | 4.37 | 37,180 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,620 |
| Countries That Use the Euro | 0 | - | 4.96 | 103,101 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,423 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,661 |
| The Only European Country ... | 0 | - | 4.91 | 213,976 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,639 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,227,562 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,316 |
| History of Russia Quiz | 0 | - | 4.49 | 31,798 |
| French History Multiple Choice | 0 | - | 4.55 | 32,882 |
| Countries that Beat Greece | 0 | - | 4.52 | 48,603 |
| History of Italy | 0 | - | 4.55 | 31,829 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,491 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,989 |
| Counties of England | 0 | - | 4.97 | 789,591 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,519 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,620 |
| History of London | 0 | - | 4.33 | 26,103 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,145 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,210 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,742 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,336 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,449 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,502 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,931 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,053 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,309 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,233 |
| Slavic Countries | 0 | - | 4.96 | 110,897 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,044 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,707 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,643 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,275 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,618 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,432 |
| Champions League Winners | 0 | - | 4.92 | 996,882 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,359 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,072 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,447 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,937 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,858 |
| Monarchies of Europe | 0 | - | 4.90 | 97,361 |
| European Countries with One Border | 0 | - | 4.97 | 181,682 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,586 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,299 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,113 |
| Countries That Border Russia | 0 | - | 4.98 | 459,033 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,242 |
| History of Austria | 0 | - | 4.70 | 17,759 |
| Austria Country Quiz | 0 | - | 4.57 | 59,369 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,275 |
| France Country Quiz | 0 | - | 4.70 | 133,901 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,256 |
| Geography of the French Empire | 0 | - | 4.48 | 26,942 |
| The French Revolution | 0 | - | 4.46 | 23,790 |
| History of France | 0 | - | 4.59 | 56,121 |
| French History A-Z | 0 | - | 4.17 | 22,222 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,768 |
| States of Germany | 0 | - | 4.96 | 150,186 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,389 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,066 |
| Regions of Italy | 0 | - | 4.92 | 74,786 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,496 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,260 |
| Netherlands Country Quiz | 0 | - | 4.50 | 80,000 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,863 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,781 |
| The Vikings! | 0 | - | 4.46 | 28,250 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,718 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,373 |
| The Portuguese Empire | 0 | - | 4.54 | 11,995 |
| Spain Country Quiz | 0 | - | 4.45 | 127,665 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,431 |
| Switzerland Country Quiz | 0 | - | 4.51 | 62,955 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,238 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,049 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,246 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,571 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,198 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,834 |
| Geography of the British Empire | 0 | - | 4.48 | 39,493 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,524 |
| Counties of Wales | 0 | - | 4.63 | 38,921 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,951 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,656,779 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,325 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,287 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,150 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,802 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,873 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,863 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,654 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,335 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,261 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,011 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,979 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,310 |
| Countries that Border Poland | 0 | - | 4.99 | 171,412 |
| Russia Country Quiz | 0 | - | 4.85 | 113,686 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,397 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,604 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,875 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,725 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,053 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,781 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,631 |
| German Inventions | 0 | - | 3.91 | 30,185 |
| Embarrassing Chapters in German History | 0 | - | 3.41 | 12,576 |
| Roman to Greek God | 0 | - | 4.52 | 122,245 |
| History of Ireland | 0 | - | 4.39 | 30,845 |
| Italian History A-Z | 0 | - | 4.21 | 17,455 |
| The Life of Julius Caesar | 0 | - | 4.39 | 38,965 |
| Roman History by Picture | 0 | - | 4.46 | 26,347 |
| Byzantine History | 0 | - | 4.91 | 28,632 |
| History of The Netherlands | 0 | - | 4.46 | 17,320 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,460 |
| Finland Country Quiz | 0 | - | 4.50 | 59,144 |
| Norway Country Quiz | 0 | - | 4.44 | 76,665 |
| Iceland Country Quiz | 0 | - | 4.69 | 42,873 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,988 |
| Spanish History A-Z | 0 | - | 4.37 | 19,096 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,100 |
| UK Immigration by Country | 0 | - | 4.94 | 139,723 |
| Arthurian Legend | 0 | - | 4.33 | 25,050 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,270 |
| British Monopoly Board | 0 | - | 4.52 | 41,041 |
