| The Trojan War | 0 | - | 4.83 | 39,760 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,990 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,072 |
| Name that Greek Letter | 0 | - | 4.93 | 323,959 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,033 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,934 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,584 |
| Roman Emperors | 0 | - | 4.95 | 120,189 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,755 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,683 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,186 |
| Name the English Monarchs | 0 | - | 4.91 | 503,251 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,509 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,767 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,959 |
| Roman Names for Places | 0 | - | 4.62 | 58,336 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,359 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,101 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,291 |
| Medieval English History | 0 | - | 4.53 | 43,545 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,541 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 82,617 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,849 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,149 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,998 |
| Countries Bordering France | 0 | - | 4.83 | 402,808 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,644 |
| Ancient Greek Words | 0 | - | 4.93 | 111,744 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,188 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,816 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,711 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,177 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,983 |
| Europe Map Quiz | 0 | - | 5.00 | 4,766,326 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,722 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,900 |
| Departments of France | 0 | - | 4.93 | 54,259 |
| Germany Country Quiz | 0 | - | 4.83 | 157,981 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,451 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,503 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,151 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,564 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,000 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,766 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,770 |
| England or Wales? | 0 | - | 4.94 | 45,741 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,525 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,806 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,372 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,901 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,221 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,991 |
| Greece Country Quiz | 0 | - | 4.74 | 66,323 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,159 |
| Counties of Ireland | 0 | - | 4.92 | 195,571 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,910 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,170 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,153 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,016 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,278 |
| History of Scotland | 0 | - | 4.51 | 21,104 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,722 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,904 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,511 |
| Kings of France Quiz | 0 | - | 4.20 | 32,767 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,980 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,572 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,193 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,367 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,566 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,408 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,997 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,533 |
| English Royal Consorts | 0 | - | 4.38 | 37,388 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,253 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,693 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,421 |
| The Only European Country ... | 0 | - | 4.91 | 216,968 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,328 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,245,902 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,329,507 |
| History of Russia Quiz | 0 | - | 4.47 | 31,938 |
| French History Multiple Choice | 0 | - | 4.55 | 33,080 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,008 |
| History of Italy | 0 | - | 4.55 | 32,013 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,685 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,263 |
| Counties of England | 0 | - | 4.97 | 797,757 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,904 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,723 |
| History of London | 0 | - | 4.33 | 26,201 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,663 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 356,859 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,763 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,290 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,964 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,246 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,827 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,269 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,394 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,292 |
| Slavic Countries | 0 | - | 4.96 | 111,754 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,507 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,474 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,199 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,810 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,770 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,513 |
| Champions League Winners | 0 | - | 4.92 | 1,007,998 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,937 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,673 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,479 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,860 |
| Monarchies of Europe | 0 | - | 4.90 | 98,223 |
| European Countries with One Border | 0 | - | 4.97 | 182,919 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,705 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,724 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,593 |
| Countries That Border Russia | 0 | - | 4.98 | 462,025 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,967 |
| History of Austria | 0 | - | 4.70 | 17,878 |
| Austria Country Quiz | 0 | - | 4.57 | 59,792 |
| Belgium Country Quiz | 0 | - | 4.73 | 71,860 |
| France Country Quiz | 0 | - | 4.70 | 135,058 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,583 |
| Geography of the French Empire | 0 | - | 4.45 | 27,121 |
| The French Revolution | 0 | - | 4.47 | 24,017 |
| History of France | 0 | - | 4.59 | 57,119 |
| French History A-Z | 0 | - | 4.27 | 24,698 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,957 |
| States of Germany | 0 | - | 4.95 | 152,821 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,147 |
| Regions of Italy | 0 | - | 4.92 | 76,029 |
| Italy Country Quiz | 0 | - | 4.80 | 123,489 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,785 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,536 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,576 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,280 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,491 |
| The Vikings! | 0 | - | 4.46 | 28,354 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,165 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,953 |
| The Portuguese Empire | 0 | - | 4.58 | 12,074 |
| Spain Country Quiz | 0 | - | 4.44 | 128,642 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,109 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,405 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,285 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,061 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,080 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,751 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,370 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,564 |
| Geography of the British Empire | 0 | - | 4.48 | 39,711 |
| Animals in British History | 0 | - | 4.43 | 26,023 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,719 |
| Counties of Wales | 0 | - | 4.63 | 39,331 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,956 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,702,627 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,898 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,206 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,109 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,139 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,439 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,535 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,527 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,066 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,303 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,174 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 261,455 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,850 |
| Countries that Border Poland | 0 | - | 4.99 | 172,377 |
| Russia Country Quiz | 0 | - | 4.83 | 114,573 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,900 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,149 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,398 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,296 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,373 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,490 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,829 |
| German Inventions | 0 | - | 3.91 | 30,242 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,640 |
| Roman to Greek God | 0 | - | 4.52 | 122,924 |
| History of Ireland | 0 | - | 4.39 | 31,232 |
| Italian History A-Z | 0 | - | 4.21 | 17,726 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,101 |
| Roman History by Picture | 0 | - | 4.46 | 26,478 |
| Byzantine History | 0 | - | 4.91 | 28,889 |
| Byzantine Emperors | 0 | - | 4.92 | 14,256 |
| History of The Netherlands | 0 | - | 4.46 | 17,449 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,955 |
| Finland Country Quiz | 0 | - | 4.50 | 59,714 |
| Norway Country Quiz | 0 | - | 4.44 | 77,420 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,190 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,119 |
| Spanish History A-Z | 0 | - | 4.37 | 19,310 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,469 |
| UK Immigration by Country | 0 | - | 4.94 | 141,006 |
| Arthurian Legend | 0 | - | 4.33 | 25,126 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,966 |
| British Monopoly Board | 0 | - | 4.52 | 41,181 |
