| Byzantine History | 0 | - | 4.91 | 28,992 |
| Byzantine Emperors | 0 | - | 4.92 | 14,515 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,038 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,531 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,396 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,119 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,416 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,343 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 51,089 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,102 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,641 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,788 |
| Roman to Greek God | 0 | - | 4.52 | 123,218 |
| 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 | 76,024 |
| Name the English Monarchs | 0 | - | 4.91 | 505,483 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,346 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,129 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,780 |
| Name that Greek Letter | 0 | - | 4.93 | 324,695 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,714 |
| Mythology A-Z | 0 | - | 4.31 | 37,352 |
| Word Chain - Greek and Roman Mythology | 0 | - | 4.50 | 56,910 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,172 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,098 |
| Countries Bordering Iran | 0 | - | 4.83 | 95,944 |
| Countries that Border Iraq | 0 | - | 4.97 | 109,001 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,250 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,695 |
| The Trojan War | 0 | - | 4.83 | 39,936 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,695 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 87,987 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,039 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,493 |
| Roman Emperors | 0 | - | 4.95 | 120,915 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,402 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,160 |
| Asia Map Quiz | 0 | - | 4.99 | 923,190 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,389 |
| Egypt Country Quiz | 0 | - | 4.83 | 77,842 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,318 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,760 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,764 |
| The Only European Country ... | 0 | - | 4.91 | 218,410 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,182 |
| Ancient Greek Words | 0 | - | 4.93 | 112,262 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,200 |
| Roman History by Picture | 0 | - | 4.46 | 26,554 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,531 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,630 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,894 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,574 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,294 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,697 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,301 |
| Countries that Beat Egypt | 0 | - | 4.91 | 66,573 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,254,048 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,876 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,300 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,851 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,268 |
| 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 | 175,039 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,955 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,647 |
| Slavic Countries | 0 | - | 4.96 | 112,196 |
| History of Russia Quiz | 0 | - | 4.47 | 31,986 |
| 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 | 34,784 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,383 |
| Counties of England | 0 | - | 4.97 | 801,390 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,043 |
| 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 | 360,207 |
| Champions League Winners | 0 | - | 4.92 | 1,013,477 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,405 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,633 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,370 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,729 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 109,004 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,592 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,126 |
| Countries of the Middle East | 0 | - | 4.96 | 202,293 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,487 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,574 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,654 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,589 |
| 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 | 194,229 |
| Least Forested Countries in Asia | 0 | - | 4.75 | 64,875 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,291 |
| Monarchies of Europe | 0 | - | 4.90 | 98,670 |
| European Countries with One Border | 0 | - | 4.97 | 183,528 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,270 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,176 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,483 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,299 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,460 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,797 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,629 |
| Russia Country Quiz | 0 | - | 4.83 | 115,153 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,965 |
| Countries That Border Russia | 0 | - | 4.98 | 463,959 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,633 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,332 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,509 |
| History of Austria | 0 | - | 4.70 | 17,954 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,878 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,381 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,531 |
| Departments of France | 0 | - | 4.93 | 54,875 |
| Geography of the French Empire | 0 | - | 4.45 | 27,198 |
| The French Revolution | 0 | - | 4.47 | 24,113 |
| Countries Bordering France | 0 | - | 4.83 | 404,397 |
| History of France | 0 | - | 4.61 | 57,476 |
| Germany Country Quiz | 0 | - | 4.83 | 158,590 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,566 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,914 |
| States of Germany | 0 | - | 4.95 | 154,046 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,544 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,550 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,365 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,176 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,008 |
| Regions of Italy | 0 | - | 4.92 | 76,734 |
| Italy Country Quiz | 0 | - | 4.77 | 123,896 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,565 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,705 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,659 |
| The Vikings! | 0 | - | 4.46 | 28,393 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,333 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,049 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,623 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,620 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,391 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,477 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,439 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,122 |
| 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 | 17,809 |
| England or Wales? | 0 | - | 4.94 | 45,901 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,675 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 106,614 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,642 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,902 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 137,053 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 97,774 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 136,616 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,641 |
| Monarchies of Asia | 0 | - | 4.97 | 71,396 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,585 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,195 |
| 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 | 41,087 |
| Jordan Country Quiz | 0 | - | 4.86 | 32,017 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,656 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,915 |
| China Cities Map Quiz | 0 | - | 4.94 | 105,732 |
| Provinces of China Map Quiz | 0 | - | 4.92 | 94,481 |
| Japan Country Quiz | 0 | - | 4.93 | 143,113 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 33,226 |
| 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 | 37,916 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,719,221 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,580 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,290 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,635 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,797 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,819 |
| 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 | 83,407 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,327 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,897 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,926 |
| 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 that Beat Germany | 0 | - | 4.94 | 107,117 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,134 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,157 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,793 |
| Counties of Ireland | 0 | - | 4.92 | 196,863 |
| Italy A-Z | 0 | - | 4.49 | 58,651 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 44,091 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,159 |
| Roman Names for Places | 0 | - | 4.62 | 58,615 |
| History of The Netherlands | 0 | - | 4.46 | 17,529 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,975 |
