| The Trojan War | 0 | - | 4.83 | 39,581 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,215 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,845 |
| Name that Greek Letter | 0 | - | 4.93 | 322,627 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,876 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,845 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,307 |
| Roman Emperors | 0 | - | 4.95 | 119,356 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,278 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,547 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,150 |
| Name the English Monarchs | 0 | - | 4.92 | 500,284 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,457 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,640 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,802 |
| Roman Names for Places | 0 | - | 4.62 | 58,071 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,313 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,774 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,580 |
| Medieval English History | 0 | - | 4.53 | 43,412 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,589 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 75,899 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,015 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,519 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,411 |
| Countries Bordering France | 0 | - | 4.83 | 401,246 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,082 |
| Ancient Greek Words | 0 | - | 4.93 | 111,141 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,140 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,694 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,483 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,056 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,902 |
| Europe Map Quiz | 0 | - | 5.00 | 4,747,321 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,024 |
| Departments of France | 0 | - | 4.93 | 53,405 |
| Germany Country Quiz | 0 | - | 4.82 | 157,238 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,615 |
| Italy Country Quiz | 0 | - | 4.82 | 122,735 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,869 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,521 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,453 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,466 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,081 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,924 |
| England or Wales? | 0 | - | 4.94 | 45,505 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,302 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,644 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,050 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,711 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,987 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,503 |
| Greece Country Quiz | 0 | - | 4.74 | 66,000 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,085 |
| Counties of Ireland | 0 | - | 4.92 | 194,109 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,653 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,956 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,278 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,558 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,190 |
| History of Scotland | 0 | - | 4.51 | 21,052 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,077 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,024 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,667 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,543 |
| Kings of France Quiz | 0 | - | 4.20 | 32,637 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,840 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,856 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,921 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,161 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,155 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,969 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,678 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,920 |
| English Royal Consorts | 0 | - | 4.37 | 37,280 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,025 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,317 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,381 |
| The Only European Country ... | 0 | - | 4.91 | 215,276 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,393 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,235,391 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,765 |
| History of Russia Quiz | 0 | - | 4.49 | 31,850 |
| French History Multiple Choice | 0 | - | 4.55 | 32,958 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,778 |
| History of Italy | 0 | - | 4.55 | 31,908 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,572 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,103 |
| Counties of England | 0 | - | 4.97 | 792,882 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,731 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,670 |
| History of London | 0 | - | 4.33 | 26,136 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,359 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,734 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,191 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,739 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,535 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,795 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,422 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,611 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,785 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,554 |
| Slavic Countries | 0 | - | 4.96 | 111,288 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,317 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,275 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,850 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,415 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,681 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,467 |
| Champions League Winners | 0 | - | 4.92 | 1,001,091 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,638 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,459 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,978 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,555 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,275 |
| Monarchies of Europe | 0 | - | 4.90 | 97,730 |
| European Countries with One Border | 0 | - | 4.97 | 182,174 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,037 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,720 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,437 |
| Countries That Border Russia | 0 | - | 4.98 | 460,441 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,562 |
| History of Austria | 0 | - | 4.70 | 17,808 |
| Austria Country Quiz | 0 | - | 4.57 | 59,549 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,509 |
| France Country Quiz | 0 | - | 4.70 | 134,532 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,849 |
| Geography of the French Empire | 0 | - | 4.45 | 27,001 |
| The French Revolution | 0 | - | 4.46 | 23,872 |
| History of France | 0 | - | 4.59 | 56,650 |
| French History A-Z | 0 | - | 4.22 | 24,426 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,204 |
| States of Germany | 0 | - | 4.96 | 151,182 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,432 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,603 |
| Regions of Italy | 0 | - | 4.92 | 75,254 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,623 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,375 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,255 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 49,963 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,276 |
| The Vikings! | 0 | - | 4.46 | 28,290 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,910 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,613 |
| The Portuguese Empire | 0 | - | 4.58 | 12,032 |
| Spain Country Quiz | 0 | - | 4.45 | 128,085 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,238 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,150 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,764 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,375 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,462 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,632 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,271 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,126 |
| Geography of the British Empire | 0 | - | 4.48 | 39,589 |
| Animals in British History | 0 | - | 4.44 | 25,939 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,624 |
| Counties of Wales | 0 | - | 4.63 | 39,076 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,367 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,676,267 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,844 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,670 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,548 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,944 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,125 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,161 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,910 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,793 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,166 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,535 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,914 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,981 |
| Countries that Border Poland | 0 | - | 4.99 | 171,824 |
| Russia Country Quiz | 0 | - | 4.85 | 114,076 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,581 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,636 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,123 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,953 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,207 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,096 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,726 |
| German Inventions | 0 | - | 3.91 | 30,209 |
| Embarrassing Chapters in German History | 0 | - | 3.41 | 12,600 |
| Roman to Greek God | 0 | - | 4.52 | 122,513 |
| History of Ireland | 0 | - | 4.39 | 31,027 |
| Italian History A-Z | 0 | - | 4.21 | 17,634 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,030 |
| Roman History by Picture | 0 | - | 4.46 | 26,398 |
| Byzantine History | 0 | - | 4.91 | 28,715 |
| History of The Netherlands | 0 | - | 4.46 | 17,371 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,671 |
| Finland Country Quiz | 0 | - | 4.50 | 59,383 |
| Norway Country Quiz | 0 | - | 4.44 | 77,009 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,001 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,470 |
| Spanish History A-Z | 0 | - | 4.37 | 19,225 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,248 |
| UK Immigration by Country | 0 | - | 4.94 | 140,409 |
| Arthurian Legend | 0 | - | 4.33 | 25,079 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,023 |
