| The Trojan War | 0 | - | 4.83 | 40,002 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,008 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,168 |
| Name that Greek Letter | 0 | - | 4.93 | 325,051 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,246 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,051 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,609 |
| Roman Emperors | 0 | - | 4.95 | 121,258 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,337 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,854 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,618 |
| Name the English Monarchs | 0 | - | 4.91 | 506,707 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,584 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,316 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,219 |
| Roman Names for Places | 0 | - | 4.62 | 58,721 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,414 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,467 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,881 |
| Medieval English History | 0 | - | 4.53 | 43,661 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,416 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,568 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,833 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,884 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,616 |
| Countries Bordering France | 0 | - | 4.83 | 405,001 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,934 |
| Ancient Greek Words | 0 | - | 4.93 | 112,517 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,267 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,976 |
| Houses of British Monarchs | 0 | - | 4.54 | 65,969 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,328 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,093 |
| Europe Map Quiz | 0 | - | 5.00 | 4,789,295 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,950 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,846 |
| Departments of France | 0 | - | 4.93 | 55,215 |
| Germany Country Quiz | 0 | - | 4.82 | 158,878 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,101 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,272 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,083 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,752 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,518 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,894 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,827 |
| England or Wales? | 0 | - | 4.94 | 45,978 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,759 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,101 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,961 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,158 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,494 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,733 |
| Greece Country Quiz | 0 | - | 4.74 | 66,655 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,244 |
| Counties of Ireland | 0 | - | 4.92 | 197,392 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,272 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,425 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,169 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,450 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,380 |
| History of Scotland | 0 | - | 4.51 | 21,177 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,083 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,320 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,019 |
| Kings of France Quiz | 0 | - | 4.21 | 32,935 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,158 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,356 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,978 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,928 |
| Countries Italy Declared War On | 0 | - | 4.75 | 45,047 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,204 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,898 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,366 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,420 |
| English Royal Consorts | 0 | - | 4.38 | 37,536 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,898 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,309 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,220 |
| The Only European Country ... | 0 | - | 4.91 | 219,161 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,593 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,258,824 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,047 |
| History of Russia Quiz | 0 | - | 4.47 | 32,009 |
| French History Multiple Choice | 0 | - | 4.55 | 33,247 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,513 |
| History of Italy | 0 | - | 4.55 | 32,156 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,827 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,430 |
| Counties of England | 0 | - | 4.97 | 803,222 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,103 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,829 |
| History of London | 0 | - | 4.33 | 26,274 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,075 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,891 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,597 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,114 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,918 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,802 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,841 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,988 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,225 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,816 |
| Slavic Countries | 0 | - | 4.96 | 112,406 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,791 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,927 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,527 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,529 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,875 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,566 |
| Champions League Winners | 0 | - | 4.92 | 1,016,538 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,005 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,866 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,568 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,641 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,503 |
| Monarchies of Europe | 0 | - | 4.90 | 98,905 |
| European Countries with One Border | 0 | - | 4.97 | 183,852 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,573 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,920 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,595 |
| Countries That Border Russia | 0 | - | 4.98 | 464,585 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,496 |
| History of Austria | 0 | - | 4.70 | 17,977 |
| Austria Country Quiz | 0 | - | 4.57 | 60,065 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,267 |
| France Country Quiz | 0 | - | 4.70 | 135,688 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,678 |
| Geography of the French Empire | 0 | - | 4.45 | 27,220 |
| The French Revolution | 0 | - | 4.47 | 24,149 |
| History of France | 0 | - | 4.61 | 57,643 |
| French History A-Z | 0 | - | 4.27 | 25,150 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,843 |
| States of Germany | 0 | - | 4.95 | 154,605 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,561 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,713 |
| Regions of Italy | 0 | - | 4.92 | 77,125 |
| Italy Country Quiz | 0 | - | 4.77 | 124,082 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,952 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,697 |
| Netherlands Country Quiz | 0 | - | 4.52 | 80,957 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,821 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,748 |
| The Vikings! | 0 | - | 4.46 | 28,409 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,395 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,329 |
| The Portuguese Empire | 0 | - | 4.58 | 12,107 |
| Spain Country Quiz | 0 | - | 4.44 | 129,283 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,368 |
| Switzerland Country Quiz | 0 | - | 4.52 | 63,650 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,780 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,551 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,387 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,862 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,467 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,282 |
| Geography of the British Empire | 0 | - | 4.48 | 39,849 |
| Animals in British History | 0 | - | 4.43 | 26,103 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,843 |
| Counties of Wales | 0 | - | 4.63 | 39,634 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,727,028 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,821 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,941 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,840 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,364 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,745 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,971 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,962 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,985 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,994 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,119 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,773 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,935 |
| Countries that Border Poland | 0 | - | 4.99 | 173,207 |
| Russia Country Quiz | 0 | - | 4.83 | 115,338 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,287 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,938 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,765 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,023 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,601 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,115 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,998 |
| German Inventions | 0 | - | 3.91 | 30,285 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,685 |
| Roman to Greek God | 0 | - | 4.52 | 123,364 |
| History of Ireland | 0 | - | 4.39 | 31,441 |
| Italian History A-Z | 0 | - | 4.16 | 17,941 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,182 |
| Roman History by Picture | 0 | - | 4.46 | 26,595 |
| Byzantine History | 0 | - | 4.91 | 29,028 |
| Byzantine Emperors | 0 | - | 4.93 | 14,611 |
| History of The Netherlands | 0 | - | 4.46 | 17,556 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,285 |
| Finland Country Quiz | 0 | - | 4.51 | 60,024 |
| Norway Country Quiz | 0 | - | 4.45 | 77,841 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,403 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,965 |
| Spanish History A-Z | 0 | - | 4.37 | 19,515 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,718 |
| UK Immigration by Country | 0 | - | 4.94 | 141,752 |
| Arthurian Legend | 0 | - | 4.33 | 25,178 |
