| The Trojan War | 0 | - | 4.83 | 39,550 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,116 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,413 |
| Name that Greek Letter | 0 | - | 4.93 | 322,486 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,863 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,834 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,265 |
| Roman Emperors | 0 | - | 4.95 | 119,193 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,227 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,530 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,018 |
| Name the English Monarchs | 0 | - | 4.92 | 499,958 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,452 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,618 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,778 |
| Roman Names for Places | 0 | - | 4.62 | 58,041 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,311 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,731 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,248 |
| Medieval English History | 0 | - | 4.53 | 43,390 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,494 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,824 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,922 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,466 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,342 |
| Countries Bordering France | 0 | - | 4.83 | 401,022 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,940 |
| Ancient Greek Words | 0 | - | 4.93 | 111,068 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,134 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,680 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,456 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,037 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,891 |
| Europe Map Quiz | 0 | - | 5.00 | 4,744,720 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,676 |
| Departments of France | 0 | - | 4.93 | 53,260 |
| Germany Country Quiz | 0 | - | 4.82 | 157,133 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,525 |
| Italy Country Quiz | 0 | - | 4.82 | 122,636 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,776 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,420 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,426 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,377 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,011 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,800 |
| England or Wales? | 0 | - | 4.94 | 45,475 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,288 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,625 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,013 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,687 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,967 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,315 |
| Greece Country Quiz | 0 | - | 4.74 | 65,961 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,073 |
| Counties of Ireland | 0 | - | 4.92 | 193,957 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,625 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,858 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,185 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,418 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,175 |
| History of Scotland | 0 | - | 4.51 | 21,042 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,023 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,993 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,456 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,522 |
| Kings of France Quiz | 0 | - | 4.20 | 32,623 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,821 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,791 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,783 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,131 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,115 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,938 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,642 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,825 |
| English Royal Consorts | 0 | - | 4.37 | 37,264 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,853 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,155 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,252 |
| The Only European Country ... | 0 | - | 4.91 | 215,024 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,253 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,234,056 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,210 |
| History of Russia Quiz | 0 | - | 4.49 | 31,838 |
| French History Multiple Choice | 0 | - | 4.55 | 32,938 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,752 |
| History of Italy | 0 | - | 4.55 | 31,893 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,554 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,089 |
| Counties of England | 0 | - | 4.97 | 792,255 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,705 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,664 |
| History of London | 0 | - | 4.33 | 26,125 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,330 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,357 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,108 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,676 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,318 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,742 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,215 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,340 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,700 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,505 |
| Slavic Countries | 0 | - | 4.96 | 111,210 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,266 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,040 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,825 |
| UK Cities Map Quiz | 0 | - | 4.95 | 463,167 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,666 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,460 |
| Champions League Winners | 0 | - | 4.92 | 1,000,420 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,606 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,317 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,875 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,454 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,215 |
| Monarchies of Europe | 0 | - | 4.90 | 97,672 |
| European Countries with One Border | 0 | - | 4.97 | 182,080 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,945 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,663 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,166 |
| Countries That Border Russia | 0 | - | 4.98 | 460,233 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,510 |
| History of Austria | 0 | - | 4.70 | 17,795 |
| Austria Country Quiz | 0 | - | 4.57 | 59,520 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,463 |
| France Country Quiz | 0 | - | 4.70 | 134,445 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,714 |
| Geography of the French Empire | 0 | - | 4.45 | 26,993 |
| The French Revolution | 0 | - | 4.46 | 23,857 |
| History of France | 0 | - | 4.59 | 56,575 |
| French History A-Z | 0 | - | 4.22 | 24,367 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,115 |
| States of Germany | 0 | - | 4.96 | 151,001 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,423 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,333 |
| Regions of Italy | 0 | - | 4.92 | 75,149 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,599 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,349 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,208 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,084 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,959 |
| The Vikings! | 0 | - | 4.46 | 28,282 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,810 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,567 |
| The Portuguese Empire | 0 | - | 4.58 | 12,027 |
| Spain Country Quiz | 0 | - | 4.45 | 128,016 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,128 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,119 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,697 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,317 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,417 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,625 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,260 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,079 |
| Geography of the British Empire | 0 | - | 4.48 | 39,575 |
| Animals in British History | 0 | - | 4.44 | 25,929 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,613 |
| Counties of Wales | 0 | - | 4.63 | 39,060 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,281 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,672,742 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,729 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,603 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,456 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,922 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,073 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,099 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,685 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,658 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,015 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,436 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,552 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,848 |
| Countries that Border Poland | 0 | - | 4.99 | 171,754 |
| Russia Country Quiz | 0 | - | 4.85 | 114,014 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,549 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,458 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,069 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,917 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,183 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,045 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,714 |
| German Inventions | 0 | - | 3.91 | 30,206 |
| Embarrassing Chapters in German History | 0 | - | 3.41 | 12,593 |
| Roman to Greek God | 0 | - | 4.52 | 122,470 |
| History of Ireland | 0 | - | 4.39 | 30,996 |
| Italian History A-Z | 0 | - | 4.21 | 17,623 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,015 |
| Roman History by Picture | 0 | - | 4.46 | 26,391 |
| Byzantine History | 0 | - | 4.91 | 28,694 |
| History of The Netherlands | 0 | - | 4.46 | 17,354 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,628 |
| Finland Country Quiz | 0 | - | 4.50 | 59,341 |
| Norway Country Quiz | 0 | - | 4.44 | 76,947 |
| Iceland Country Quiz | 0 | - | 4.69 | 42,974 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,396 |
| Spanish History A-Z | 0 | - | 4.37 | 19,221 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,220 |
| UK Immigration by Country | 0 | - | 4.94 | 140,072 |
| Arthurian Legend | 0 | - | 4.33 | 25,074 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,878 |
