| Olympian Gods Quiz | 0 | - | 4.96 | 496,571 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,126 |
| Countries That Border Russia | 0 | - | 4.98 | 459,046 |
| Ancient Greek Words | 0 | - | 4.92 | 110,742 |
| Russia Country Quiz | 0 | - | 4.85 | 113,689 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,559 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,645 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,398 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,937 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,883 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,013 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,478 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,486 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,172 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,070 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,774 |
| States of Germany | 0 | - | 4.96 | 150,196 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,072 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,181 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,814 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,593 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,877 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,056 |
| Germany Country Quiz | 0 | - | 4.82 | 156,641 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,949 |
| Name the English Monarchs | 0 | - | 4.92 | 498,206 |
| Europe Map Quiz | 0 | - | 5.00 | 4,732,955 |
| Countries that Border Poland | 0 | - | 4.99 | 171,418 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,620 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,726 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,787 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,452 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,247 |
| Name that Greek Letter | 0 | - | 4.94 | 321,775 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,045 |
| Iceland... or Ireland? | 0 | - | 4.74 | 56,798 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,861 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,407 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,171 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,926 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,634 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,550 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,389 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,432 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,493 |
| The Trojan War | 0 | - | 4.83 | 39,453 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,624 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,394 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,081 |
| Roman Emperors | 0 | - | 4.95 | 118,554 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 51,973 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,109 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,435 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,669 |
| The Only European Country ... | 0 | - | 4.91 | 213,989 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,650 |
| Russian History A-Z | 0 | - | 4.38 | 30,971 |
| Germany A-Z | 0 | - | 4.56 | 62,331 |
| History of Germany | 0 | - | 4.39 | 52,624 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,316 |
| Mythology A-Z | 0 | - | 4.31 | 37,012 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,451 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,674 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,468 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,410 |
| Roman History by Picture | 0 | - | 4.46 | 26,348 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,721 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 101,539 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,714 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,202 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,398 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,200 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,227,657 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,382 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,747 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,339 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,461 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,506 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,955 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,071 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,317 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,240 |
| Slavic Countries | 0 | - | 4.96 | 110,903 |
| History of Russia Quiz | 0 | - | 4.49 | 31,798 |
| Holy Roman Empire Countries | 0 | - | 4.77 | 54,681 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,068 |
| History of Italy | 0 | - | 4.55 | 31,830 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,491 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,990 |
| Counties of England | 0 | - | 4.97 | 789,629 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,529 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,401 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,551 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,230 |
| Champions League Winners | 0 | - | 4.92 | 996,912 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,960 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,362 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,289 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,151 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,075 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,453 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,949 |
| Which European Country - Multiple Choice | 0 | - | 4.51 | 84,100 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,859 |
| Monarchies of Europe | 0 | - | 4.90 | 97,368 |
| European Countries with One Border | 0 | - | 4.97 | 181,689 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,591 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,665 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,342 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,305 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,264 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,001 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,317 |
| Albania Country Quiz | 0 | - | 4.54 | 38,684 |
| Russian Inventions | 0 | - | 4.39 | 12,893 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,883 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,338 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,064 |
| Romania Country Quiz | 0 | - | 4.63 | 53,381 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,248 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,787 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,792 |
| History of Austria | 0 | - | 4.70 | 17,759 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,268 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,273 |
| Departments of France | 0 | - | 4.93 | 52,880 |
| Geography of the French Empire | 0 | - | 4.48 | 26,943 |
| The French Revolution | 0 | - | 4.46 | 23,790 |
| Countries Bordering France | 0 | - | 4.83 | 399,626 |
| History of France | 0 | - | 4.59 | 56,131 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,633 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,205 |
| German History A-Z | 0 | - | 4.49 | 24,319 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,788 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,776 |
| Regions of Italy | 0 | - | 4.92 | 74,794 |
| Italy Country Quiz | 0 | - | 4.82 | 122,286 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,455 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,136 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,986 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,381 |
| Byzantine History | 0 | - | 4.91 | 28,634 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,868 |
| The Vikings! | 0 | - | 4.46 | 28,250 |
| The Portuguese Empire | 0 | - | 4.54 | 11,996 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,119 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,434 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,707 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,250 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,069 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,380 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,200 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,846 |
| Geography of the British Empire | 0 | - | 4.48 | 39,496 |
| Medieval English History | 0 | - | 4.53 | 43,331 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,535 |
| England or Wales? | 0 | - | 4.94 | 45,350 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,576 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,590 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 54,972 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,657,048 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,334 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,803 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,873 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,865 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,014 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,553 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,530 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,818 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,559 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,832 |
| France True or False? | 0 | - | 4.43 | 39,792 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,630 |
| French History Multiple Choice | 0 | - | 4.55 | 32,884 |
| Bundesliga Champions | 0 | - | 4.23 | 55,714 |
| All Bundesliga Teams Ever | 0 | - | 4.35 | 45,079 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,944 |
| Counties of Ireland | 0 | - | 4.92 | 193,174 |
| Italy A-Z | 0 | - | 4.49 | 57,751 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,479 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,908 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,390 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,547 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,689 |
| Roman Names for Places | 0 | - | 4.62 | 57,894 |
| History of The Netherlands | 0 | - | 4.46 | 17,320 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,691 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,889 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,709 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,039 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,384 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,490 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,730 |
| Roald Dahl Books | 0 | - | 4.44 | 33,938 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.57 | 34,212 |
| Middle Earth Geography | 0 | - | 4.56 | 39,549 |
| Lord of the Rings Trivia | 0 | - | 4.53 | 80,870 |
| Members of the Fellowship of the Ring | 0 | - | 4.74 | 45,545 |
| A Quiz About The Beatles | 0 | - | 4.56 | 47,572 |
| British History A-Z #1 | 0 | - | 4.45 | 45,981 |
