| The Trojan War | 0 | - | 4.83 | 39,651 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,541 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,133 |
| Name that Greek Letter | 0 | - | 4.93 | 323,095 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,939 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,876 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,420 |
| Roman Emperors | 0 | - | 4.95 | 119,658 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,476 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,606 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,545 |
| Name the English Monarchs | 0 | - | 4.91 | 501,502 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,481 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,695 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,861 |
| Roman Names for Places | 0 | - | 4.62 | 58,184 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,330 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,877 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,595 |
| Medieval English History | 0 | - | 4.53 | 43,464 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,888 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 76,129 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,289 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,706 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,613 |
| Countries Bordering France | 0 | - | 4.83 | 401,904 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,623 |
| Ancient Greek Words | 0 | - | 4.93 | 111,355 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,167 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,744 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,576 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,104 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,925 |
| Europe Map Quiz | 0 | - | 5.00 | 4,755,603 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,461 |
| Departments of France | 0 | - | 4.93 | 53,797 |
| Germany Country Quiz | 0 | - | 4.82 | 157,583 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,870 |
| Italy Country Quiz | 0 | - | 4.82 | 123,202 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,130 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,818 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,516 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,661 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,380 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,239 |
| England or Wales? | 0 | - | 4.94 | 45,605 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,392 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,716 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,187 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,793 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,090 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,108 |
| Greece Country Quiz | 0 | - | 4.74 | 66,144 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,119 |
| Counties of Ireland | 0 | - | 4.92 | 194,665 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,754 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,710 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,633 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,177 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,223 |
| History of Scotland | 0 | - | 4.51 | 21,075 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,284 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,695 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,516 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,616 |
| Kings of France Quiz | 0 | - | 4.20 | 32,682 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,905 |
| Countries that Beat Germany | 0 | - | 4.95 | 106,114 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,455 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,251 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,316 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,146 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,787 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,182 |
| English Royal Consorts | 0 | - | 4.37 | 37,322 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,543 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,962 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,837 |
| The Only European Country ... | 0 | - | 4.91 | 215,998 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,777 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,240,051 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,302 |
| History of Russia Quiz | 0 | - | 4.49 | 31,880 |
| French History Multiple Choice | 0 | - | 4.55 | 33,002 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,869 |
| History of Italy | 0 | - | 4.55 | 31,936 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,613 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,166 |
| Counties of England | 0 | - | 4.97 | 794,830 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,794 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,695 |
| History of London | 0 | - | 4.33 | 26,173 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,471 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,273 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,430 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,978 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,173 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,985 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,992 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 170,639 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,004 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,725 |
| Slavic Countries | 0 | - | 4.96 | 111,495 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,390 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,321 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,005 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,028 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,720 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,488 |
| Champions League Winners | 0 | - | 4.92 | 1,003,826 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,668 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,253 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,914 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,504 |
| Monarchies of Europe | 0 | - | 4.90 | 97,958 |
| European Countries with One Border | 0 | - | 4.97 | 182,514 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,321 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 77,957 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,408 |
| Countries That Border Russia | 0 | - | 4.98 | 461,123 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,731 |
| History of Austria | 0 | - | 4.70 | 17,835 |
| Austria Country Quiz | 0 | - | 4.57 | 59,640 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,662 |
| France Country Quiz | 0 | - | 4.70 | 134,768 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,159 |
| Geography of the French Empire | 0 | - | 4.45 | 27,025 |
| The French Revolution | 0 | - | 4.46 | 23,903 |
| History of France | 0 | - | 4.59 | 56,837 |
| French History A-Z | 0 | - | 4.23 | 24,557 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,545 |
| States of Germany | 0 | - | 4.96 | 151,921 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,464 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,893 |
| Regions of Italy | 0 | - | 4.92 | 75,556 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,699 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,439 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,394 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,892 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,383 |
| The Vikings! | 0 | - | 4.46 | 28,319 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,044 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,749 |
| The Portuguese Empire | 0 | - | 4.58 | 12,048 |
| Spain Country Quiz | 0 | - | 4.45 | 128,314 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,646 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,258 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,021 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,590 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,571 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,678 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,307 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,303 |
| Geography of the British Empire | 0 | - | 4.48 | 39,631 |
| Animals in British History | 0 | - | 4.44 | 25,976 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,660 |
| Counties of Wales | 0 | - | 4.63 | 39,195 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,618 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,688,219 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,514 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,893 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,786 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,042 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,276 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,347 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,634 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,294 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,688 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,787 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,978 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,352 |
| Countries that Border Poland | 0 | - | 4.99 | 172,057 |
| Russia Country Quiz | 0 | - | 4.85 | 114,283 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,722 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,259 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,238 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,095 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,295 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,251 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,759 |
| German Inventions | 0 | - | 3.91 | 30,222 |
| Embarrassing Chapters in German History | 0 | - | 3.41 | 12,616 |
| Roman to Greek God | 0 | - | 4.52 | 122,657 |
| History of Ireland | 0 | - | 4.39 | 31,117 |
| Italian History A-Z | 0 | - | 4.21 | 17,673 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,058 |
| Roman History by Picture | 0 | - | 4.46 | 26,437 |
| Byzantine History | 0 | - | 4.91 | 28,755 |
| History of The Netherlands | 0 | - | 4.46 | 17,407 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,799 |
| Finland Country Quiz | 0 | - | 4.50 | 59,538 |
| Norway Country Quiz | 0 | - | 4.44 | 77,183 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,084 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,722 |
| Spanish History A-Z | 0 | - | 4.37 | 19,269 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,341 |
| UK Immigration by Country | 0 | - | 4.94 | 140,678 |
| Arthurian Legend | 0 | - | 4.33 | 25,096 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,467 |
| British Monopoly Board | 0 | - | 4.52 | 41,140 |
