| The Trojan War | 0 | - | 4.83 | 39,631 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,484 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,858 |
| Name that Greek Letter | 0 | - | 4.93 | 323,005 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,922 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,869 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,393 |
| Roman Emperors | 0 | - | 4.95 | 119,611 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,429 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,598 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,438 |
| Name the English Monarchs | 0 | - | 4.91 | 501,228 |
| The Life of Alexander the Great | 0 | - | 4.50 | 18,474 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,681 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,841 |
| Roman Names for Places | 0 | - | 4.62 | 58,156 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,328 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,860 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,384 |
| Medieval English History | 0 | - | 4.53 | 43,448 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,827 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 76,080 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,231 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,666 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,567 |
| Countries Bordering France | 0 | - | 4.83 | 401,754 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,503 |
| Ancient Greek Words | 0 | - | 4.93 | 111,296 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,159 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,731 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,553 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,089 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,922 |
| Europe Map Quiz | 0 | - | 5.00 | 4,753,889 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,373 |
| Departments of France | 0 | - | 4.93 | 53,694 |
| Germany Country Quiz | 0 | - | 4.82 | 157,508 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,828 |
| Italy Country Quiz | 0 | - | 4.82 | 123,142 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,044 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,759 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,511 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,631 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,319 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,159 |
| England or Wales? | 0 | - | 4.94 | 45,584 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,377 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,700 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,161 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,774 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,071 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,963 |
| Greece Country Quiz | 0 | - | 4.74 | 66,102 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,111 |
| Counties of Ireland | 0 | - | 4.92 | 194,506 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,733 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,650 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,540 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,024 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,218 |
| History of Scotland | 0 | - | 4.51 | 21,069 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,200 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,653 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,329 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,606 |
| Kings of France Quiz | 0 | - | 4.20 | 32,673 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,888 |
| Countries that Beat Germany | 0 | - | 4.95 | 106,063 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,335 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,234 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,287 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,112 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,764 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,123 |
| English Royal Consorts | 0 | - | 4.37 | 37,305 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,415 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,831 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,731 |
| The Only European Country ... | 0 | - | 4.91 | 215,855 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,677 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,239,120 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,325,732 |
| History of Russia Quiz | 0 | - | 4.49 | 31,876 |
| French History Multiple Choice | 0 | - | 4.55 | 32,994 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,839 |
| History of Italy | 0 | - | 4.55 | 31,929 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,604 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,154 |
| Counties of England | 0 | - | 4.97 | 794,373 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,783 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,690 |
| History of London | 0 | - | 4.33 | 26,161 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,438 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,955 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,377 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,921 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,036 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,940 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,892 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,397 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,942 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,678 |
| Slavic Countries | 0 | - | 4.96 | 111,443 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,375 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,944 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,977 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,907 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,704 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,482 |
| Champions League Winners | 0 | - | 4.92 | 1,003,311 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,640 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,197 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,847 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,461 |
| Monarchies of Europe | 0 | - | 4.90 | 97,902 |
| European Countries with One Border | 0 | - | 4.97 | 182,449 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,262 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,805 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,164 |
| Countries That Border Russia | 0 | - | 4.98 | 460,978 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,689 |
| History of Austria | 0 | - | 4.70 | 17,831 |
| Austria Country Quiz | 0 | - | 4.57 | 59,612 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,625 |
| France Country Quiz | 0 | - | 4.70 | 134,704 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,072 |
| Geography of the French Empire | 0 | - | 4.45 | 27,018 |
| The French Revolution | 0 | - | 4.46 | 23,894 |
| History of France | 0 | - | 4.59 | 56,787 |
| French History A-Z | 0 | - | 4.23 | 24,528 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,485 |
| States of Germany | 0 | - | 4.96 | 151,754 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,455 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,842 |
| Regions of Italy | 0 | - | 4.92 | 75,494 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,678 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,423 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,353 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,734 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,361 |
| The Vikings! | 0 | - | 4.46 | 28,314 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,015 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,716 |
| The Portuguese Empire | 0 | - | 4.58 | 12,045 |
| Spain Country Quiz | 0 | - | 4.45 | 128,253 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,579 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,234 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,950 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,502 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,544 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,671 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,302 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,264 |
| Geography of the British Empire | 0 | - | 4.48 | 39,627 |
| Animals in British History | 0 | - | 4.44 | 25,968 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,654 |
| Counties of Wales | 0 | - | 4.63 | 39,177 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,561 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,686,476 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,462 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,823 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,731 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,022 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,256 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,316 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,461 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,198 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,563 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,705 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,742 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,258 |
| Countries that Border Poland | 0 | - | 4.99 | 172,003 |
| Russia Country Quiz | 0 | - | 4.85 | 114,233 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,692 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,093 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,212 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,066 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,277 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,219 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,752 |
| German Inventions | 0 | - | 3.91 | 30,217 |
| Embarrassing Chapters in German History | 0 | - | 3.41 | 12,614 |
| Roman to Greek God | 0 | - | 4.52 | 122,627 |
| History of Ireland | 0 | - | 4.39 | 31,089 |
| Italian History A-Z | 0 | - | 4.21 | 17,660 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,053 |
| Roman History by Picture | 0 | - | 4.46 | 26,430 |
| Byzantine History | 0 | - | 4.91 | 28,748 |
| History of The Netherlands | 0 | - | 4.46 | 17,403 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,767 |
| Finland Country Quiz | 0 | - | 4.50 | 59,500 |
| Norway Country Quiz | 0 | - | 4.44 | 77,142 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,059 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,663 |
| Spanish History A-Z | 0 | - | 4.37 | 19,257 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,318 |
| UK Immigration by Country | 0 | - | 4.94 | 140,611 |
| Arthurian Legend | 0 | - | 4.33 | 25,093 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,342 |
| British Monopoly Board | 0 | - | 4.52 | 41,133 |
