| The Trojan War | 0 | - | 4.83 | 39,936 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,695 |
| Name the English Monarchs | 0 | - | 4.91 | 505,487 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,522 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,270 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,729 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,344 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,495 |
| Roman Emperors | 0 | - | 4.95 | 120,921 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,163 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,102 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,735 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,517 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,643 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,402 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,146 |
| Countries Bordering France | 0 | - | 4.83 | 404,399 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,366 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,159 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,696 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,878 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,531 |
| Departments of France | 0 | - | 4.93 | 54,876 |
| Germany Country Quiz | 0 | - | 4.83 | 158,592 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,914 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,035 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,885 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,706 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,333 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,623 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,478 |
| England or Wales? | 0 | - | 4.94 | 45,901 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,251 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,014 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,846 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,079 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,398 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,136 |
| Counties of Ireland | 0 | - | 4.92 | 196,863 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,172 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,099 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,659 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,828 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,003 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,962 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,190 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,119 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,177 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,008 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,785 |
| Name that Greek Letter | 0 | - | 4.93 | 324,696 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,924 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,565 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,040 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,182 |
| Finland Country Quiz | 0 | - | 4.51 | 59,923 |
| Norway Country Quiz | 0 | - | 4.45 | 77,690 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,335 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,975 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,738 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,234 |
| Medieval English History | 0 | - | 4.53 | 43,620 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,319 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,763 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,767 |
| The Only European Country ... | 0 | - | 4.91 | 218,415 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,186 |
| History of Russia Quiz | 0 | - | 4.47 | 31,986 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,793 |
| History of Italy | 0 | - | 4.55 | 32,113 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 44,093 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,159 |
| Roman Names for Places | 0 | - | 4.62 | 58,617 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,785 |
| Greenland Country Quiz | 0 | - | 4.78 | 36,482 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,150 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,383 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,043 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,910 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,882 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,278 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,054 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,254,061 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,877 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,303 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,852 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,271 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,624 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,220 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,042 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,955 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,649 |
| Slavic Countries | 0 | - | 4.96 | 112,196 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,041 |
| Ancient Greek Words | 0 | - | 4.93 | 112,264 |
| Counties of England | 0 | - | 4.97 | 801,395 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,211 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,092 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,995 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,213 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,119 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,417 |
| Sweden Country Quiz | 0 | - | 4.35 | 68,449 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,965 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,346 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,935 |
| History of Scotland | 0 | - | 4.51 | 21,155 |
| Champions League Winners | 0 | - | 4.92 | 1,013,499 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,576 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,340 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,250 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,231 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,294 |
| Monarchies of Europe | 0 | - | 4.90 | 98,672 |
| European Countries with One Border | 0 | - | 4.97 | 183,528 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,272 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,302 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,966 |
| Countries That Border Russia | 0 | - | 4.98 | 463,962 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,333 |
| History of Austria | 0 | - | 4.70 | 17,954 |
| Austria Country Quiz | 0 | - | 4.57 | 59,979 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,142 |
| France Country Quiz | 0 | - | 4.70 | 135,456 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,381 |
| Geography of the French Empire | 0 | - | 4.45 | 27,198 |
| The French Revolution | 0 | - | 4.47 | 24,114 |
| Kings of France Quiz | 0 | - | 4.20 | 32,881 |
| History of France | 0 | - | 4.61 | 57,476 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,566 |
| States of Germany | 0 | - | 4.95 | 154,050 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,545 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,550 |
| Greece Country Quiz | 0 | - | 4.74 | 66,544 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,556 |
| Regions of Italy | 0 | - | 4.92 | 76,737 |
| Italy Country Quiz | 0 | - | 4.77 | 123,896 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,238 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,903 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,645 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,831 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,659 |
| The Vikings! | 0 | - | 4.46 | 28,393 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,317 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,208 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| Spain Country Quiz | 0 | - | 4.44 | 129,072 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,049 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,578 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,620 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,391 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,272 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,818 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,439 |
| English Royal Consorts | 0 | - | 4.38 | 37,489 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,123 |
| Geography of the British Empire | 0 | - | 4.48 | 39,818 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,810 |
| Counties of Wales | 0 | - | 4.63 | 39,521 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,656 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,591 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,177 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,485 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,465 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,799 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,629 |
| Russia Country Quiz | 0 | - | 4.83 | 115,154 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,633 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,510 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,952 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,396 |
| History of Ireland | 0 | - | 4.39 | 31,376 |
| Byzantine History | 0 | - | 4.91 | 28,992 |
| Byzantine Emperors | 0 | - | 4.92 | 14,515 |
| History of The Netherlands | 0 | - | 4.46 | 17,530 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,616 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,631 |
| UK Immigration by Country | 0 | - | 4.94 | 141,488 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,684 |
| British Monopoly Board | 0 | - | 4.52 | 41,240 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,676 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,346 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,308 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,719,239 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,581 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,291 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,699 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,635 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,292 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,799 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,819 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,568 |
| Countries that Border Poland | 0 | - | 4.99 | 172,963 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,144 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,409 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,328 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,897 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,996 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,976 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,926 |
