| The Trojan War | 0 | - | 4.83 | 39,938 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,714 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,846 |
| Name that Greek Letter | 0 | - | 4.93 | 324,718 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,182 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,010 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,501 |
| Roman Emperors | 0 | - | 4.95 | 120,936 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,177 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,797 |
| Name the English Monarchs | 0 | - | 4.91 | 505,546 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,557 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 44,116 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,163 |
| Roman Names for Places | 0 | - | 4.62 | 58,619 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,395 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,351 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,098 |
| Medieval English History | 0 | - | 4.53 | 43,621 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,117 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,781 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,529 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,653 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,415 |
| Countries Bordering France | 0 | - | 4.83 | 404,433 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,405 |
| Ancient Greek Words | 0 | - | 4.93 | 112,280 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,238 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,914 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,885 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,279 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,056 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,534 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,881 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,542 |
| Departments of France | 0 | - | 4.93 | 54,897 |
| Germany Country Quiz | 0 | - | 4.82 | 158,611 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,927 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,041 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,891 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,707 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,341 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,643 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,493 |
| England or Wales? | 0 | - | 4.94 | 45,905 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,700 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,017 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,853 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,086 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,402 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,173 |
| Greece Country Quiz | 0 | - | 4.74 | 66,548 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,216 |
| Counties of Ireland | 0 | - | 4.92 | 196,886 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,177 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,111 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,841 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,036 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,350 |
| History of Scotland | 0 | - | 4.51 | 21,155 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,970 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,196 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,299 |
| Kings of France Quiz | 0 | - | 4.20 | 32,883 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,095 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,131 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,928 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,429 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,568 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,052 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,744 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,241 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,067 |
| English Royal Consorts | 0 | - | 4.38 | 37,489 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,344 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,790 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,788 |
| The Only European Country ... | 0 | - | 4.91 | 218,444 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,204 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,254,282 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,972 |
| History of Russia Quiz | 0 | - | 4.47 | 31,987 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,418 |
| History of Italy | 0 | - | 4.55 | 32,114 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,785 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,389 |
| Counties of England | 0 | - | 4.97 | 801,466 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,049 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,799 |
| History of London | 0 | - | 4.33 | 26,252 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,942 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,284 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,318 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,862 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,310 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,627 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,284 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,077 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,969 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,655 |
| Slavic Countries | 0 | - | 4.96 | 112,209 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,720 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,158 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,423 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,988 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,836 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,553 |
| Champions League Winners | 0 | - | 4.92 | 1,013,658 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,584 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,354 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,260 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,255 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,304 |
| Monarchies of Europe | 0 | - | 4.90 | 98,682 |
| European Countries with One Border | 0 | - | 4.97 | 183,535 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,285 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,315 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,017 |
| Countries That Border Russia | 0 | - | 4.98 | 464,005 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,344 |
| History of Austria | 0 | - | 4.70 | 17,958 |
| Austria Country Quiz | 0 | - | 4.57 | 59,981 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,145 |
| France Country Quiz | 0 | - | 4.70 | 135,465 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,388 |
| Geography of the French Empire | 0 | - | 4.45 | 27,198 |
| The French Revolution | 0 | - | 4.47 | 24,119 |
| History of France | 0 | - | 4.61 | 57,488 |
| French History A-Z | 0 | - | 4.27 | 25,045 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,583 |
| States of Germany | 0 | - | 4.95 | 154,067 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,546 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,562 |
| Regions of Italy | 0 | - | 4.92 | 76,751 |
| Italy Country Quiz | 0 | - | 4.77 | 123,904 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,904 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,646 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,839 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,671 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,662 |
| The Vikings! | 0 | - | 4.46 | 28,395 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,320 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,213 |
| The Portuguese Empire | 0 | - | 4.58 | 12,096 |
| Spain Country Quiz | 0 | - | 4.44 | 129,083 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,060 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,581 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,633 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,395 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,283 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,820 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,440 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,131 |
| Geography of the British Empire | 0 | - | 4.48 | 39,820 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,812 |
| Counties of Wales | 0 | - | 4.63 | 39,527 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,719,633 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,590 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,670 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,604 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,296 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,640 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,812 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,208 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,506 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,495 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,834 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,857 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,649 |
| Countries that Border Poland | 0 | - | 4.99 | 172,983 |
| Russia Country Quiz | 0 | - | 4.83 | 115,162 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,155 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,356 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,639 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,905 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,512 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,934 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,953 |
| German Inventions | 0 | - | 3.91 | 30,274 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,674 |
| Roman to Greek God | 0 | - | 4.52 | 123,233 |
| History of Ireland | 0 | - | 4.39 | 31,379 |
| Italian History A-Z | 0 | - | 4.16 | 17,885 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,157 |
| Roman History by Picture | 0 | - | 4.46 | 26,556 |
| Byzantine History | 0 | - | 4.91 | 28,995 |
| Byzantine Emperors | 0 | - | 4.93 | 14,520 |
| History of The Netherlands | 0 | - | 4.46 | 17,530 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,185 |
| Finland Country Quiz | 0 | - | 4.51 | 59,929 |
| Norway Country Quiz | 0 | - | 4.45 | 77,697 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,337 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,630 |
| Spanish History A-Z | 0 | - | 4.37 | 19,472 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,636 |
| UK Immigration by Country | 0 | - | 4.94 | 141,502 |
| Arthurian Legend | 0 | - | 4.33 | 25,160 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,710 |
| British Monopoly Board | 0 | - | 4.52 | 41,242 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,687 |
