| The Trojan War | 0 | - | 4.83 | 39,980 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,925 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,768 |
| Name that Greek Letter | 0 | - | 4.93 | 324,951 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,232 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,040 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,580 |
| Roman Emperors | 0 | - | 4.95 | 121,173 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,289 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,839 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,509 |
| Name the English Monarchs | 0 | - | 4.91 | 506,288 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,574 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,281 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,202 |
| Roman Names for Places | 0 | - | 4.62 | 58,697 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,412 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,436 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,671 |
| Medieval English History | 0 | - | 4.53 | 43,654 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,340 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,335 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,737 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,817 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,550 |
| Countries Bordering France | 0 | - | 4.83 | 404,848 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,794 |
| Ancient Greek Words | 0 | - | 4.93 | 112,439 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,258 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,959 |
| Houses of British Monarchs | 0 | - | 4.54 | 65,943 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,316 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,086 |
| Europe Map Quiz | 0 | - | 5.00 | 4,787,393 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,931 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,774 |
| Departments of France | 0 | - | 4.93 | 55,127 |
| Germany Country Quiz | 0 | - | 4.82 | 158,814 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,055 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,203 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,027 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,732 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,465 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,848 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,717 |
| England or Wales? | 0 | - | 4.94 | 45,961 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,743 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,079 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,935 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,143 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,463 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,584 |
| Greece Country Quiz | 0 | - | 4.74 | 66,637 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,237 |
| Counties of Ireland | 0 | - | 4.92 | 197,276 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,245 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,361 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,097 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,343 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,370 |
| History of Scotland | 0 | - | 4.51 | 21,174 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,052 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,289 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,811 |
| Kings of France Quiz | 0 | - | 4.21 | 32,928 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,137 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,292 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,961 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,801 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,644 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,163 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,868 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,337 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,261 |
| English Royal Consorts | 0 | - | 4.38 | 37,520 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,747 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,194 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,074 |
| The Only European Country ... | 0 | - | 4.91 | 218,940 |
| European Countries NOT in NATO | 0 | - | 4.90 | 62,479 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,257,663 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,335,474 |
| History of Russia Quiz | 0 | - | 4.47 | 32,002 |
| French History Multiple Choice | 0 | - | 4.55 | 33,225 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,488 |
| History of Italy | 0 | - | 4.55 | 32,142 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,816 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,420 |
| Counties of England | 0 | - | 4.97 | 802,723 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,092 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,827 |
| History of London | 0 | - | 4.33 | 26,271 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,042 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,524 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,487 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,034 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,711 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,755 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,682 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,674 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,161 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,773 |
| Slavic Countries | 0 | - | 4.96 | 112,353 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,772 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,715 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,496 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,396 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,868 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,565 |
| Champions League Winners | 0 | - | 4.92 | 1,015,869 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,833 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,485 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,468 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,547 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,459 |
| Monarchies of Europe | 0 | - | 4.90 | 98,854 |
| European Countries with One Border | 0 | - | 4.97 | 183,770 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,504 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,703 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,439 |
| Countries That Border Russia | 0 | - | 4.98 | 464,457 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,461 |
| History of Austria | 0 | - | 4.70 | 17,971 |
| Austria Country Quiz | 0 | - | 4.57 | 60,042 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,243 |
| France Country Quiz | 0 | - | 4.70 | 135,630 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,621 |
| Geography of the French Empire | 0 | - | 4.45 | 27,216 |
| The French Revolution | 0 | - | 4.47 | 24,145 |
| History of France | 0 | - | 4.61 | 57,593 |
| French History A-Z | 0 | - | 4.27 | 25,125 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,780 |
| States of Germany | 0 | - | 4.95 | 154,428 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,558 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,676 |
| Regions of Italy | 0 | - | 4.92 | 77,036 |
| Italy Country Quiz | 0 | - | 4.77 | 124,023 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,942 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,689 |
| Netherlands Country Quiz | 0 | - | 4.52 | 80,932 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,788 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,728 |
| The Vikings! | 0 | - | 4.46 | 28,403 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,379 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,308 |
| The Portuguese Empire | 0 | - | 4.58 | 12,104 |
| Spain Country Quiz | 0 | - | 4.44 | 129,227 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,296 |
| Switzerland Country Quiz | 0 | - | 4.52 | 63,633 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,748 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,514 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,357 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,856 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,459 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,236 |
| Geography of the British Empire | 0 | - | 4.48 | 39,844 |
| Animals in British History | 0 | - | 4.43 | 26,095 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,840 |
| Counties of Wales | 0 | - | 4.63 | 39,606 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,725,153 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,758 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,863 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,771 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,347 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,718 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,930 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,798 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,866 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,872 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,056 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,556 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,859 |
| Countries that Border Poland | 0 | - | 4.99 | 173,152 |
| Russia Country Quiz | 0 | - | 4.83 | 115,297 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,245 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,803 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,730 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,998 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,577 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,072 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,985 |
| German Inventions | 0 | - | 3.91 | 30,283 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,683 |
| Roman to Greek God | 0 | - | 4.52 | 123,333 |
| History of Ireland | 0 | - | 4.39 | 31,425 |
| Italian History A-Z | 0 | - | 4.16 | 17,927 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,174 |
| Roman History by Picture | 0 | - | 4.46 | 26,582 |
| Byzantine History | 0 | - | 4.91 | 29,020 |
| Byzantine Emperors | 0 | - | 4.93 | 14,587 |
| History of The Netherlands | 0 | - | 4.46 | 17,550 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,259 |
| Finland Country Quiz | 0 | - | 4.51 | 60,000 |
| Norway Country Quiz | 0 | - | 4.45 | 77,808 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,385 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,815 |
| Spanish History A-Z | 0 | - | 4.37 | 19,508 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,699 |
| UK Immigration by Country | 0 | - | 4.94 | 141,692 |
| Arthurian Legend | 0 | - | 4.33 | 25,174 |
