| The Trojan War | 0 | - | 4.83 | 39,739 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,893 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,682 |
| Name that Greek Letter | 0 | - | 4.93 | 323,519 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,010 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,917 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,549 |
| Roman Emperors | 0 | - | 4.95 | 120,095 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,698 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,668 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,064 |
| Name the English Monarchs | 0 | - | 4.91 | 502,905 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,504 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,758 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,943 |
| Roman Names for Places | 0 | - | 4.62 | 58,310 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,351 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,025 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,002 |
| Medieval English History | 0 | - | 4.53 | 43,520 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,433 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 82,153 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,733 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,059 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,928 |
| Countries Bordering France | 0 | - | 4.83 | 402,646 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,503 |
| Ancient Greek Words | 0 | - | 4.93 | 111,648 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,184 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,800 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,685 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,163 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,967 |
| Europe Map Quiz | 0 | - | 5.00 | 4,764,186 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,702 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,806 |
| Departments of France | 0 | - | 4.93 | 54,175 |
| Germany Country Quiz | 0 | - | 4.83 | 157,906 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,388 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,439 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,086 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,557 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,958 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,701 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,661 |
| England or Wales? | 0 | - | 4.94 | 45,713 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,506 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,781 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,343 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,881 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,194 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,810 |
| Greece Country Quiz | 0 | - | 4.74 | 66,283 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,148 |
| Counties of Ireland | 0 | - | 4.92 | 195,426 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,881 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,088 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,033 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,862 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,265 |
| History of Scotland | 0 | - | 4.51 | 21,095 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,681 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,869 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,316 |
| Kings of France Quiz | 0 | - | 4.20 | 32,754 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,962 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,486 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,039 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,341 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,512 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,368 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,965 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,460 |
| English Royal Consorts | 0 | - | 4.38 | 37,365 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,118 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,561 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,318 |
| The Only European Country ... | 0 | - | 4.91 | 216,752 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,203 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,244,758 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,329,044 |
| History of Russia Quiz | 0 | - | 4.47 | 31,922 |
| French History Multiple Choice | 0 | - | 4.55 | 33,048 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,982 |
| History of Italy | 0 | - | 4.55 | 31,980 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,664 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,242 |
| Counties of England | 0 | - | 4.97 | 797,221 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,875 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,718 |
| History of London | 0 | - | 4.33 | 26,195 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,624 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 356,225 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,705 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,241 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,811 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,189 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,640 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,028 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,336 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,235 |
| Slavic Countries | 0 | - | 4.96 | 111,702 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,487 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,265 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,165 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,651 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,761 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,506 |
| Champions League Winners | 0 | - | 4.92 | 1,007,152 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,888 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,591 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,385 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,790 |
| Monarchies of Europe | 0 | - | 4.90 | 98,181 |
| European Countries with One Border | 0 | - | 4.97 | 182,824 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,634 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,668 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,411 |
| Countries That Border Russia | 0 | - | 4.98 | 461,849 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,932 |
| History of Austria | 0 | - | 4.70 | 17,865 |
| Austria Country Quiz | 0 | - | 4.57 | 59,757 |
| Belgium Country Quiz | 0 | - | 4.73 | 71,827 |
| France Country Quiz | 0 | - | 4.70 | 135,015 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,474 |
| Geography of the French Empire | 0 | - | 4.45 | 27,062 |
| The French Revolution | 0 | - | 4.47 | 23,946 |
| History of France | 0 | - | 4.59 | 57,005 |
| French History A-Z | 0 | - | 4.27 | 24,664 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,876 |
| States of Germany | 0 | - | 4.95 | 152,686 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,073 |
| Regions of Italy | 0 | - | 4.92 | 75,933 |
| Italy Country Quiz | 0 | - | 4.80 | 123,436 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,762 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,517 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,551 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,209 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,476 |
| The Vikings! | 0 | - | 4.46 | 28,348 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,144 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,922 |
| The Portuguese Empire | 0 | - | 4.58 | 12,067 |
| Spain Country Quiz | 0 | - | 4.44 | 128,569 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,016 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,382 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,239 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,025 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,051 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,739 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,356 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,507 |
| Geography of the British Empire | 0 | - | 4.48 | 39,680 |
| Animals in British History | 0 | - | 4.43 | 26,012 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,708 |
| Counties of Wales | 0 | - | 4.63 | 39,312 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,886 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,699,971 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,825 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,156 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,050 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,120 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,407 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,476 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,374 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,919 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,190 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,104 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 261,176 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,756 |
| Countries that Border Poland | 0 | - | 4.99 | 172,311 |
| Russia Country Quiz | 0 | - | 4.83 | 114,525 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,867 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,978 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,362 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,249 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,354 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,428 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,810 |
| German Inventions | 0 | - | 3.91 | 30,238 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,636 |
| Roman to Greek God | 0 | - | 4.52 | 122,860 |
| History of Ireland | 0 | - | 4.39 | 31,200 |
| Italian History A-Z | 0 | - | 4.21 | 17,714 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,090 |
| Roman History by Picture | 0 | - | 4.46 | 26,468 |
| Byzantine History | 0 | - | 4.91 | 28,874 |
| Byzantine Emperors | 0 | - | 4.92 | 14,195 |
| History of The Netherlands | 0 | - | 4.46 | 17,437 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,930 |
| Finland Country Quiz | 0 | - | 4.50 | 59,688 |
| Norway Country Quiz | 0 | - | 4.44 | 77,373 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,173 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,036 |
| Spanish History A-Z | 0 | - | 4.37 | 19,303 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,445 |
| UK Immigration by Country | 0 | - | 4.94 | 140,936 |
| Arthurian Legend | 0 | - | 4.33 | 25,114 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,860 |
| British Monopoly Board | 0 | - | 4.52 | 41,174 |
