| Name the English Monarchs | 0 | - | 4.91 | 505,956 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,396 |
| The Trojan War | 0 | - | 4.83 | 39,952 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,831 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,548 |
| Roman Emperors | 0 | - | 4.95 | 121,077 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,634 |
| Germany Country Quiz | 0 | - | 4.82 | 158,737 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,418 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,228 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,358 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,207 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,025 |
| Medieval English History | 0 | - | 4.53 | 43,637 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,239 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,112 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,650 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,744 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,490 |
| Countries Bordering France | 0 | - | 4.83 | 404,673 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,690 |
| States of Germany | 0 | - | 4.95 | 154,282 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,630 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,241 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,820 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,234 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,187 |
| Roman Names for Places | 0 | - | 4.62 | 58,662 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,937 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,916 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,293 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,068 |
| Europe Map Quiz | 0 | - | 5.00 | 4,784,567 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,908 |
| France Cities Map Quiz | 0 | - | 4.95 | 167,689 |
| Departments of France | 0 | - | 4.93 | 55,002 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,000 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,682 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,185 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,137 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,957 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,724 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,410 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,766 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,630 |
| England or Wales? | 0 | - | 4.94 | 45,934 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,725 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,049 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,898 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,115 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,433 |
| Counties of Ireland | 0 | - | 4.92 | 197,118 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,209 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,250 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,989 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,212 |
| History of Scotland | 0 | - | 4.51 | 21,164 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,022 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,250 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,585 |
| Kings of France Quiz | 0 | - | 4.20 | 32,903 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,115 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,973 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,553 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,510 |
| German Inventions | 0 | - | 3.91 | 30,280 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,569 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,329 |
| Name that Greek Letter | 0 | - | 4.93 | 324,834 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,610 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,110 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,253 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,805 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,295 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 238,179 |
| English Royal Consorts | 0 | - | 4.38 | 37,504 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,574 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,029 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,952 |
| The Only European Country ... | 0 | - | 4.91 | 218,707 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,369 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,415 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,354 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,256,109 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,853 |
| History of Russia Quiz | 0 | - | 4.47 | 31,996 |
| French History Multiple Choice | 0 | - | 4.55 | 33,209 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.40 | 82,759 |
| History of Germany | 0 | - | 4.39 | 52,965 |
| Ancient Greek Words | 0 | - | 4.93 | 112,360 |
| History of Italy | 0 | - | 4.55 | 32,133 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,805 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,412 |
| Counties of England | 0 | - | 4.97 | 802,180 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,069 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,818 |
| History of London | 0 | - | 4.33 | 26,263 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,999 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,022 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,403 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,957 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,524 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,705 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,504 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,403 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,074 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,714 |
| Slavic Countries | 0 | - | 4.96 | 112,288 |
| Most Popular Baby Boy Names in Germany | 0 | - | 4.34 | 67,237 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,228 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,406 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,486 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,473 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,225 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,856 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,561 |
| Champions League Winners | 0 | - | 4.92 | 1,014,981 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,642 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,416 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,378 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,436 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,388 |
| Monarchies of Europe | 0 | - | 4.90 | 98,772 |
| European Countries with One Border | 0 | - | 4.97 | 183,662 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,418 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,439 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,283 |
| Countries That Border Russia | 0 | - | 4.98 | 464,268 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,414 |
| History of Austria | 0 | - | 4.70 | 17,966 |
| Austria Country Quiz | 0 | - | 4.57 | 60,018 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,201 |
| France Country Quiz | 0 | - | 4.70 | 135,575 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,528 |
| Geography of the French Empire | 0 | - | 4.45 | 27,205 |
| The French Revolution | 0 | - | 4.47 | 24,133 |
| History of France | 0 | - | 4.61 | 57,548 |
| French History A-Z | 0 | - | 4.27 | 25,092 |
| German Cities with the Most Tourists | 0 | - | 4.77 | 49,074 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,567 |
| Greece Country Quiz | 0 | - | 4.74 | 66,599 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,943 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,650 |
| Regions of Italy | 0 | - | 4.92 | 76,934 |
| Italy Country Quiz | 0 | - | 4.77 | 123,966 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,158 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,927 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,673 |
| Netherlands Country Quiz | 0 | - | 4.52 | 80,890 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,745 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,697 |
| The Vikings! | 0 | - | 4.46 | 28,399 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,355 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,272 |
| The Portuguese Empire | 0 | - | 4.58 | 12,098 |
| Spain Country Quiz | 0 | - | 4.44 | 129,173 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,188 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,614 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,700 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,463 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,326 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,838 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,446 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,189 |
| Geography of the British Empire | 0 | - | 4.48 | 39,832 |
| Animals in British History | 0 | - | 4.43 | 26,083 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,828 |
| Counties of Wales | 0 | - | 4.63 | 39,576 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,722,668 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,675 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,786 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,705 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,320 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,685 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,878 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,532 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,730 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,707 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,966 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,257 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,776 |
| Countries that Border Poland | 0 | - | 4.99 | 173,074 |
| Russia Country Quiz | 0 | - | 4.83 | 115,247 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,217 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,588 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,695 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,965 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,552 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,010 |
| Famous Germans by Picture | 0 | - | 4.12 | 16,896 |
| German History A-Z | 0 | - | 4.49 | 24,889 |
| History of Ireland | 0 | - | 4.39 | 31,406 |
| Italian History A-Z | 0 | - | 4.16 | 17,911 |
| Byzantine History | 0 | - | 4.91 | 29,011 |
| Byzantine Emperors | 0 | - | 4.93 | 14,553 |
| History of The Netherlands | 0 | - | 4.46 | 17,541 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,225 |
| Finland Country Quiz | 0 | - | 4.51 | 59,964 |
| Norway Country Quiz | 0 | - | 4.45 | 77,764 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,364 |
