| The Trojan War | 0 | - | 4.83 | 39,502 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,890 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,400 |
| Name that Greek Letter | 0 | - | 4.94 | 322,128 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,829 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,807 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,175 |
| Roman Emperors | 0 | - | 4.95 | 118,830 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,092 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,497 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,747 |
| Name the English Monarchs | 0 | - | 4.92 | 499,120 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,442 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,587 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,740 |
| Roman Names for Places | 0 | - | 4.62 | 57,973 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,304 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,651 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,485 |
| Medieval English History | 0 | - | 4.53 | 43,354 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,252 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,676 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,711 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,336 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,220 |
| Countries Bordering France | 0 | - | 4.83 | 400,559 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,580 |
| Ancient Greek Words | 0 | - | 4.92 | 110,937 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,124 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,650 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,388 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,004 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,871 |
| Europe Map Quiz | 0 | - | 5.00 | 4,739,276 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,452 |
| Departments of France | 0 | - | 4.93 | 53,069 |
| Germany Country Quiz | 0 | - | 4.82 | 156,870 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,387 |
| Italy Country Quiz | 0 | - | 4.82 | 122,461 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,635 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,301 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,409 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,254 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,857 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,594 |
| England or Wales? | 0 | - | 4.94 | 45,418 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,228 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,573 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,933 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,628 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,899 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,911 |
| Greece Country Quiz | 0 | - | 4.74 | 65,874 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,042 |
| Counties of Ireland | 0 | - | 4.92 | 193,622 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,569 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,662 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,962 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,111 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,148 |
| History of Scotland | 0 | - | 4.51 | 21,028 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,934 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,908 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,912 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,472 |
| Kings of France Quiz | 0 | - | 4.20 | 32,597 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,775 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,638 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,462 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,069 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,026 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,840 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,577 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,638 |
| English Royal Consorts | 0 | - | 4.37 | 37,234 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,525 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,810 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,984 |
| The Only European Country ... | 0 | - | 4.91 | 214,576 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,981 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,231,001 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,812 |
| History of Russia Quiz | 0 | - | 4.49 | 31,820 |
| French History Multiple Choice | 0 | - | 4.55 | 32,911 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,683 |
| History of Italy | 0 | - | 4.55 | 31,864 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,524 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,039 |
| Counties of England | 0 | - | 4.97 | 791,050 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,650 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,646 |
| History of London | 0 | - | 4.33 | 26,114 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,253 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,368 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,947 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,527 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,929 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,639 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,717 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,838 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,518 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,373 |
| Slavic Countries | 0 | - | 4.96 | 111,061 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,100 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,489 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,732 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,793 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,641 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,445 |
| Champions League Winners | 0 | - | 4.92 | 998,697 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,522 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,202 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,664 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,208 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,033 |
| Monarchies of Europe | 0 | - | 4.90 | 97,531 |
| European Countries with One Border | 0 | - | 4.97 | 181,883 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,790 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,515 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,728 |
| Countries That Border Russia | 0 | - | 4.98 | 459,795 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,364 |
| History of Austria | 0 | - | 4.70 | 17,779 |
| Austria Country Quiz | 0 | - | 4.57 | 59,450 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,377 |
| France Country Quiz | 0 | - | 4.70 | 134,043 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,497 |
| Geography of the French Empire | 0 | - | 4.45 | 26,968 |
| The French Revolution | 0 | - | 4.46 | 23,832 |
| History of France | 0 | - | 4.59 | 56,392 |
| French History A-Z | 0 | - | 4.22 | 24,152 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,991 |
| States of Germany | 0 | - | 4.96 | 150,669 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,409 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,205 |
| Regions of Italy | 0 | - | 4.92 | 74,982 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,556 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,310 |
| Netherlands Country Quiz | 0 | - | 4.50 | 80,111 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,989 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,888 |
| The Vikings! | 0 | - | 4.46 | 28,268 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,764 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,498 |
| The Portuguese Empire | 0 | - | 4.54 | 12,008 |
| Spain Country Quiz | 0 | - | 4.45 | 127,850 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,806 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,049 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,536 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,191 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,352 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,598 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,238 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,977 |
| Geography of the British Empire | 0 | - | 4.48 | 39,540 |
| Animals in British History | 0 | - | 4.44 | 25,908 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,581 |
| Counties of Wales | 0 | - | 4.63 | 39,011 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,128 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,665,374 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,539 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,431 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,311 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,858 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 137,990 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,999 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,134 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,715 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,628 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,225 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,746 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,568 |
| Countries that Border Poland | 0 | - | 4.99 | 171,598 |
| Russia Country Quiz | 0 | - | 4.85 | 113,843 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,476 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,062 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,980 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,832 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,124 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,926 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,693 |
| German Inventions | 0 | - | 3.91 | 30,195 |
| Embarrassing Chapters in German History | 0 | - | 3.41 | 12,586 |
| Roman to Greek God | 0 | - | 4.52 | 122,376 |
| History of Ireland | 0 | - | 4.39 | 30,924 |
| Italian History A-Z | 0 | - | 4.21 | 17,597 |
| The Life of Julius Caesar | 0 | - | 4.39 | 38,995 |
| Roman History by Picture | 0 | - | 4.46 | 26,371 |
| Byzantine History | 0 | - | 4.91 | 28,667 |
| History of The Netherlands | 0 | - | 4.46 | 17,346 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,543 |
| Finland Country Quiz | 0 | - | 4.50 | 59,267 |
| Norway Country Quiz | 0 | - | 4.44 | 76,836 |
| Iceland Country Quiz | 0 | - | 4.69 | 42,926 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,232 |
| Spanish History A-Z | 0 | - | 4.37 | 19,199 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,155 |
| UK Immigration by Country | 0 | - | 4.94 | 139,932 |
| Arthurian Legend | 0 | - | 4.33 | 25,065 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,555 |
