| Byzantine History | 0 | - | 4.91 | 28,992 |
| Byzantine Emperors | 0 | - | 4.92 | 14,516 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,048 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,533 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,402 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,128 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,417 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,344 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 51,091 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,104 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,645 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,788 |
| Roman to Greek God | 0 | - | 4.52 | 123,219 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,035 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,885 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 76,025 |
| Name the English Monarchs | 0 | - | 4.91 | 505,499 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,347 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,198 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,795 |
| Name that Greek Letter | 0 | - | 4.93 | 324,700 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,715 |
| Mythology A-Z | 0 | - | 4.31 | 37,353 |
| Word Chain - Greek and Roman Mythology | 0 | - | 4.50 | 56,911 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,174 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,104 |
| Countries Bordering Iran | 0 | - | 4.83 | 95,946 |
| Countries that Border Iraq | 0 | - | 4.97 | 109,004 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,261 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,696 |
| The Trojan War | 0 | - | 4.83 | 39,936 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,696 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 87,987 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,042 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,497 |
| Roman Emperors | 0 | - | 4.95 | 120,923 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,405 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,165 |
| Asia Map Quiz | 0 | - | 4.99 | 923,203 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,390 |
| Egypt Country Quiz | 0 | - | 4.83 | 77,842 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,322 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,771 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,774 |
| The Only European Country ... | 0 | - | 4.91 | 218,421 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,189 |
| Ancient Greek Words | 0 | - | 4.93 | 112,266 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,201 |
| Roman History by Picture | 0 | - | 4.46 | 26,555 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,531 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,634 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,898 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,577 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,294 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,699 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,314 |
| Countries that Beat Egypt | 0 | - | 4.91 | 66,583 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,254,095 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,892 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,304 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,856 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,278 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,624 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,225 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,046 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,958 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,651 |
| Slavic Countries | 0 | - | 4.96 | 112,197 |
| History of Russia Quiz | 0 | - | 4.47 | 31,987 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,516 |
| History of Italy | 0 | - | 4.55 | 32,113 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,785 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,385 |
| Counties of England | 0 | - | 4.97 | 801,413 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,045 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,645 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,222 |
| Champions League Winners | 0 | - | 4.92 | 1,013,520 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,430 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,635 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,370 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,730 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 109,007 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,594 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,126 |
| Countries of the Middle East | 0 | - | 4.96 | 202,299 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,487 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,577 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,661 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,591 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,342 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,253 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,237 |
| Least Forested Countries in Asia | 0 | - | 4.75 | 64,875 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,296 |
| Monarchies of Europe | 0 | - | 4.90 | 98,674 |
| European Countries with One Border | 0 | - | 4.97 | 183,531 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,276 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,185 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,490 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,303 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,468 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,806 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,632 |
| Russia Country Quiz | 0 | - | 4.83 | 115,155 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,973 |
| Countries That Border Russia | 0 | - | 4.98 | 463,972 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,636 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,339 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,511 |
| History of Austria | 0 | - | 4.70 | 17,955 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,879 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,383 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,533 |
| Departments of France | 0 | - | 4.93 | 54,880 |
| Geography of the French Empire | 0 | - | 4.45 | 27,198 |
| The French Revolution | 0 | - | 4.47 | 24,117 |
| Countries Bordering France | 0 | - | 4.83 | 404,406 |
| History of France | 0 | - | 4.61 | 57,480 |
| Germany Country Quiz | 0 | - | 4.83 | 158,594 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,566 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,915 |
| States of Germany | 0 | - | 4.95 | 154,053 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,545 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,552 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,368 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,177 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,008 |
| Regions of Italy | 0 | - | 4.92 | 76,738 |
| Italy Country Quiz | 0 | - | 4.77 | 123,898 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,565 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,706 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,660 |
| The Vikings! | 0 | - | 4.46 | 28,394 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,334 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,051 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,626 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,620 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,392 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,480 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,439 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,125 |
| Geography of the British Empire | 0 | - | 4.48 | 39,818 |
| Medieval English History | 0 | - | 4.53 | 43,620 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,810 |
| England or Wales? | 0 | - | 4.94 | 45,901 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,677 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 106,615 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,643 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,908 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 137,056 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 97,775 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 136,624 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,641 |
| Monarchies of Asia | 0 | - | 4.97 | 71,401 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,588 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,197 |
| Flags of the Middle East | 0 | - | 4.69 | 62,778 |
| Countries Closest to the Persian Gulf | 0 | - | 4.93 | 83,628 |
| Qatar Country Quiz | 0 | - | 4.86 | 31,659 |
| Iran Country Quiz | 0 | - | 4.49 | 60,594 |
| Iraq Country Quiz | 0 | - | 4.43 | 41,088 |
| Jordan Country Quiz | 0 | - | 4.86 | 32,018 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,657 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,917 |
| China Cities Map Quiz | 0 | - | 4.94 | 105,732 |
| Provinces of China Map Quiz | 0 | - | 4.92 | 94,490 |
| Japan Country Quiz | 0 | - | 4.93 | 143,116 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 33,227 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,606 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 58,499 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,917 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,719,295 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,582 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,294 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,635 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,801 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,821 |
| Countries that Border Poland | 0 | - | 4.99 | 172,970 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,147 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,414 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,334 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,902 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,927 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,015 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,849 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,080 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,399 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,119 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,143 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,160 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,795 |
| Counties of Ireland | 0 | - | 4.92 | 196,870 |
| Italy A-Z | 0 | - | 4.49 | 58,651 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 44,098 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,161 |
| Roman Names for Places | 0 | - | 4.62 | 58,617 |
| History of The Netherlands | 0 | - | 4.46 | 17,530 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,977 |
