| The Trojan War | 0 | - | 4.83 | 39,720 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,819 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,300 |
| Name that Greek Letter | 0 | - | 4.93 | 323,404 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,993 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,909 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,518 |
| Roman Emperors | 0 | - | 4.95 | 120,005 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,653 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,656 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,939 |
| Name the English Monarchs | 0 | - | 4.91 | 502,536 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,498 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,741 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,921 |
| Roman Names for Places | 0 | - | 4.62 | 58,276 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,339 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,996 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,730 |
| Medieval English History | 0 | - | 4.53 | 43,505 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,194 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 81,625 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,636 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,977 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,855 |
| Countries Bordering France | 0 | - | 4.83 | 402,496 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,361 |
| Ancient Greek Words | 0 | - | 4.93 | 111,577 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,183 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,789 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,651 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,140 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,958 |
| Europe Map Quiz | 0 | - | 5.00 | 4,762,336 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,680 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,718 |
| Departments of France | 0 | - | 4.93 | 54,077 |
| Germany Country Quiz | 0 | - | 4.82 | 157,826 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,313 |
| Italy Country Quiz | 0 | - | 4.82 | 123,387 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,342 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,021 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,544 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,916 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,630 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,574 |
| England or Wales? | 0 | - | 4.94 | 45,682 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,488 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,765 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,308 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,865 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,173 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,628 |
| Greece Country Quiz | 0 | - | 4.74 | 66,244 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,137 |
| Counties of Ireland | 0 | - | 4.92 | 195,213 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,853 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,020 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,950 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,658 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,260 |
| History of Scotland | 0 | - | 4.51 | 21,090 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,642 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,825 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,150 |
| Kings of France Quiz | 0 | - | 4.20 | 32,741 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,952 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,399 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,903 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,322 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,474 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,334 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,928 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,385 |
| English Royal Consorts | 0 | - | 4.37 | 37,348 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,988 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,423 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,207 |
| The Only European Country ... | 0 | - | 4.91 | 216,573 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,091 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,243,769 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,505 |
| History of Russia Quiz | 0 | - | 4.47 | 31,914 |
| French History Multiple Choice | 0 | - | 4.55 | 33,034 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,959 |
| History of Italy | 0 | - | 4.55 | 31,970 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,656 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,232 |
| Counties of England | 0 | - | 4.97 | 796,567 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,857 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,713 |
| History of London | 0 | - | 4.33 | 26,189 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,581 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,856 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,647 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,185 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,659 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,136 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,455 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,727 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,265 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,173 |
| Slavic Countries | 0 | - | 4.96 | 111,640 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,465 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,037 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,126 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,492 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,750 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,500 |
| Champions League Winners | 0 | - | 4.92 | 1,006,514 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,838 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,497 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,280 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,732 |
| Monarchies of Europe | 0 | - | 4.90 | 98,128 |
| European Countries with One Border | 0 | - | 4.97 | 182,758 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,556 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,481 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,099 |
| Countries That Border Russia | 0 | - | 4.98 | 461,687 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,886 |
| History of Austria | 0 | - | 4.70 | 17,860 |
| Austria Country Quiz | 0 | - | 4.57 | 59,726 |
| Belgium Country Quiz | 0 | - | 4.73 | 71,785 |
| France Country Quiz | 0 | - | 4.70 | 134,962 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,395 |
| Geography of the French Empire | 0 | - | 4.45 | 27,057 |
| The French Revolution | 0 | - | 4.46 | 23,929 |
| History of France | 0 | - | 4.59 | 56,965 |
| French History A-Z | 0 | - | 4.27 | 24,632 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,793 |
| States of Germany | 0 | - | 4.96 | 152,503 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,020 |
| Regions of Italy | 0 | - | 4.92 | 75,848 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,746 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,496 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,517 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,137 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,452 |
| The Vikings! | 0 | - | 4.46 | 28,342 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,122 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,886 |
| The Portuguese Empire | 0 | - | 4.58 | 12,064 |
| Spain Country Quiz | 0 | - | 4.45 | 128,515 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,921 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,359 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,184 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,986 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,029 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,715 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,349 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,459 |
| Geography of the British Empire | 0 | - | 4.48 | 39,669 |
| Animals in British History | 0 | - | 4.43 | 26,004 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,693 |
| Counties of Wales | 0 | - | 4.63 | 39,265 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,846 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,697,848 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,767 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,098 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,984 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,102 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,376 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,435 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,211 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,785 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,097 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,035 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,920 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,686 |
| Countries that Border Poland | 0 | - | 4.99 | 172,261 |
| Russia Country Quiz | 0 | - | 4.85 | 114,461 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,837 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,781 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,332 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,213 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,338 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,382 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,794 |
| German Inventions | 0 | - | 3.91 | 30,235 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,629 |
| Roman to Greek God | 0 | - | 4.52 | 122,802 |
| History of Ireland | 0 | - | 4.39 | 31,172 |
| Italian History A-Z | 0 | - | 4.21 | 17,704 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,083 |
| Roman History by Picture | 0 | - | 4.46 | 26,464 |
| Byzantine History | 0 | - | 4.91 | 28,863 |
| Byzantine Emperors | 0 | - | 4.92 | 14,046 |
| History of The Netherlands | 0 | - | 4.46 | 17,431 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,905 |
| Finland Country Quiz | 0 | - | 4.50 | 59,661 |
| Norway Country Quiz | 0 | - | 4.44 | 77,324 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,155 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,965 |
| Spanish History A-Z | 0 | - | 4.37 | 19,290 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,426 |
| UK Immigration by Country | 0 | - | 4.94 | 140,880 |
| Arthurian Legend | 0 | - | 4.33 | 25,109 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,757 |
| British Monopoly Board | 0 | - | 4.52 | 41,164 |
