| Figures from Greek Mythology | 0 | - | 4.92 | 174,771 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 69,292 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 415,170 |
| Olympian Gods Quiz | 0 | - | 4.96 | 469,264 |
| Roman to Greek God | 0 | - | 4.51 | 117,821 |
| Byzantine History | 0 | - | 4.87 | 27,358 |
| Things with Names from Classical Mythology | 0 | - | 4.27 | 84,359 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 141,118 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 64,353 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 99,377 |
| States of the German Confederation in 1848 | 0 | - | 4.85 | 28,925 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 609,942 |
| Famous Ancient Romans | 0 | - | 4.68 | 82,396 |
| Word Chain - Greek and Roman Mythology | 0 | - | 4.52 | 53,476 |
| Italy Country Quiz | 0 | - | 4.83 | 115,745 |
| Regions of Italy Map Quiz | 0 | - | 4.95 | 140,891 |
| Italy Cities Map Quiz | 0 | - | 4.96 | 144,246 |
| Countries Bordering Italy | 0 | - | 4.94 | 97,369 |
| Countries Closest to Italy | 0 | - | 4.97 | 187,832 |
| English Monarchs Quiz | 0 | - | 4.90 | 470,987 |
| Europe Map Quiz | 0 | - | 5.00 | 4,507,514 |
| The Trojan War | 0 | - | 4.81 | 37,423 |
| Name that Greek Letter | 0 | - | 4.94 | 308,762 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.86 | 101,172 |
| Countries that Beat Italy | 0 | - | 4.85 | 50,169 |
| Ancient Roman Trivia #1 | 0 | - | 4.83 | 74,431 |
| Roman Emperors | 0 | - | 4.96 | 108,020 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 348,475 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 405,872 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.70 | 55,941 |
| Ancient Greek Words | 0 | - | 4.92 | 104,242 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 98,156 |
| Roman History by Picture | 0 | - | 4.46 | 25,402 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 52,143 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,388,427 |
| Asia Map Quiz | 0 | - | 4.99 | 843,134 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,330,756 |
| Countries That Use the Euro | 0 | - | 4.92 | 73,523 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,117,546 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.93 | 1,254,381 |
| 10 Easternmost Countries in Europe | 0 | - | 4.88 | 102,373 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 184,549 |
| 10 Westernmost Countries in Europe | 0 | - | 4.95 | 144,244 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.95 | 200,201 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.83 | 40,306 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 81,932 |
| The Only European Country ... | 0 | - | 4.92 | 194,528 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 296,566 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 140,821 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 81,111 |
| Eastern Europe Map Quiz | 0 | - | 4.90 | 120,408 |
| Slavic Countries | 0 | - | 4.96 | 105,264 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 118,241 |
| Geography of the Dutch Empire | 0 | - | 4.68 | 33,371 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 75,977 |
| Counties of England | 0 | - | 4.97 | 739,385 |
| Invasions of Great Britain | 0 | - | 4.50 | 57,460 |
| Groups of Things - Harry Potter | 0 | - | 4.83 | 270,447 |
| Flags of Asia Quiz | 0 | - | 4.99 | 560,342 |
| East Asia Cities Map Quiz | 0 | - | 4.97 | 104,974 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 146,812 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 93,567 |
| 10 Easternmost Countries in Asia | 0 | - | 4.98 | 101,791 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 118,115 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 99,832 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 87,914 |
| Countries of the Middle East | 0 | - | 4.95 | 185,285 |
| China Cities Map Quiz | 0 | - | 4.90 | 93,181 |
| Provinces of China Map Quiz | 0 | - | 4.93 | 87,691 |
| Japan Country Quiz | 0 | - | 4.92 | 126,528 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.63 | 53,570 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 55,127 |
| Nepal Country Quiz | 0 | - | 4.95 | 35,267 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,394,747 |
| Top 10 Coldest European Countries | 0 | - | 4.93 | 186,596 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 120,691 |
| European Diaspora - Top 11 Countries | 0 | - | 4.89 | 88,994 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 128,511 |
| Three Band Flags of Europe | 0 | - | 4.97 | 181,458 |
| Least Forested Countries in Asia | 0 | - | 4.77 | 62,621 |
| Pixelated Europe Map | 0 | - | 4.88 | 114,950 |
| Monarchies of Europe | 0 | - | 4.89 | 92,217 |
| European Countries with One Border | 0 | - | 4.97 | 173,664 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 151,380 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 214,545 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 260,656 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 153,422 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 201,699 |
| Name a Valid European Country #2 | 0 | - | 4.92 | 90,242 |
| Russia Country Quiz | 0 | - | 4.83 | 108,530 |
| Federal Subjects of Russia | 0 | - | 4.93 | 127,119 |
| Countries That Border Russia | 0 | - | 4.98 | 442,120 |
| Croatia Country Quiz | 0 | - | 4.80 | 40,247 |
| Countries Formerly in Yugoslavia | 0 | - | 4.96 | 118,742 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.84 | 32,966 |
| Regions of France Map Quiz | 0 | - | 4.96 | 134,542 |
| France Cities Map Quiz | 0 | - | 4.95 | 156,085 |
| Departments of France | 0 | - | 4.88 | 42,765 |
| Countries Bordering France | 0 | - | 4.87 | 371,264 |
| History of France Quiz | 0 | - | 4.56 | 41,403 |
| Germany Country Quiz | 0 | - | 4.82 | 148,256 |
| States of Germany Map Quiz | 0 | - | 4.90 | 125,836 |
| Germany Cities Map Quiz | 0 | - | 4.83 | 111,837 |
| States of Germany | 0 | - | 4.94 | 135,586 |
| Germany Immigration by Country | 0 | - | 4.86 | 74,674 |
| Countries Bordering Germany | 0 | - | 4.99 | 353,383 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 134,808 |
| Ancient Greek Trivia | 0 | - | 4.55 | 64,985 |
| Counties of Ireland | 0 | - | 4.88 | 173,177 |
| Regions of Italy | 0 | - | 4.90 | 66,482 |
| Countries Italy Declared War On | 0 | - | 4.75 | 41,513 |
| Countries Surrounding Rome | 0 | - | 4.96 | 47,927 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 34,481 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 90,824 |
| Regions of Spain Quiz | 0 | - | 4.89 | 103,105 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 176,805 |
| Real Madrid 2010's Starting XI | 0 | - | 4.85 | 58,859 |
| Cantons of Switzerland | 0 | - | 4.97 | 44,477 |
| Countries and Territories of the United Kingdom | 0 | - | 4.88 | 88,408 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 108,179 |
| Shakespeare's Plays Quiz | 0 | - | 4.40 | 370,164 |
| Shakespeare Quotes Quiz | 0 | - | 4.43 | 69,687 |
| Wives of King Henry VIII | 0 | - | 4.54 | 52,297 |
| Countries the UK Declared War On | 0 | - | 4.56 | 116,926 |
| Geography of the British Empire | 0 | - | 4.51 | 38,231 |
| Medieval English History | 0 | - | 4.53 | 42,078 |
| England or Wales? | 0 | - | 4.94 | 42,784 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.96 | 303,691 |
| All UEFA Champions League Teams Ever | 0 | - | 4.83 | 118,755 |
| Champions League Winners | 0 | - | 4.92 | 935,991 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.88 | 98,046 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 119,593 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 127,963 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 122,069 |
| Asian Countries with the Most Christians | 0 | - | 4.87 | 90,674 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 107,671 |
| Pixelated Asia Map | 0 | - | 4.91 | 67,449 |
| Monarchies of Asia | 0 | - | 4.96 | 67,589 |
| Name a Valid Asian Country | 0 | - | 4.98 | 113,482 |
| Countries Closest to the Persian Gulf | 0 | - | 4.92 | 79,880 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 45,093 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 74,619 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 96,519 |
| Brunei Country Quiz | 0 | - | 4.88 | 20,647 |
| Countries that Beat China | 0 | - | 4.85 | 108,409 |
| Countries that Border China | 0 | - | 4.96 | 253,693 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 91,176 |
| Countries that Visit Japan the Most | 0 | - | 4.93 | 72,883 |
| Most-Visited Countries by Japanese | 0 | - | 4.95 | 56,348 |
| Countries Closest to Japan | 0 | - | 4.93 | 132,639 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 83,185 |
| Closest Countries to North Korea | 0 | - | 4.92 | 108,918 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 77,631 |
| Bhutan Country Quiz | 0 | - | 4.89 | 22,727 |
| Countries Bordering India | 0 | - | 4.98 | 159,238 |
| Countries Closest to India | 0 | - | 4.96 | 98,110 |
| Hindu Countries | 0 | - | 4.85 | 45,905 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 165,318 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.70 | 11,195 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 68,598 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 133,384 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 60,502 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 81,940 |
| Countries that Border Poland | 0 | - | 4.99 | 164,777 |
| History of Russia Quiz | 0 | - | 4.48 | 30,932 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 79,279 |
| Countries that Beat Russia | 0 | - | 4.83 | 75,530 |
| Countries With the Most Russian Speakers | 0 | - | 4.96 | 61,460 |
| Countries that Border Hungary | 0 | - | 4.98 | 100,083 |
| Moldova Country Quiz | 0 | - | 4.87 | 28,935 |
| Countries Bordering Serbia | 0 | - | 4.96 | 87,320 |
| History of Austria | 0 | - | 4.69 | 17,026 |
| French Geography Quiz #1 | 0 | - | 4.87 | 32,777 |
| Andorra Country Quiz | 0 | - | 4.88 | 29,609 |
| Countries Bordering Austria | 0 | - | 4.97 | 113,719 |
| Geography of the French Empire | 0 | - | 4.51 | 26,077 |
| The French Revolution | 0 | - | 4.45 | 22,679 |
| Countries that Visit France the Most | 0 | - | 4.83 | 42,372 |
| Countries Closest to Metropolitan France | 0 | - | 4.88 | 69,016 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 22,681 |
| Countries that Beat Germany | 0 | - | 4.95 | 96,807 |
| Countries With the Most German Speakers | 0 | - | 4.85 | 57,623 |
| History of Germany | 0 | - | 4.38 | 51,180 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.57 | 60,983 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 40,078 |
| History of Ireland Quiz | 0 | - | 4.44 | 20,084 |
| History of Italy | 0 | - | 4.50 | 30,877 |
| Italy A-Z | 0 | - | 4.47 | 42,233 |
| Ancient Roman Trivia #2 | 0 | - | 4.55 | 36,637 |
| Geography of the Roman Empire | 0 | - | 4.56 | 50,004 |
| The Life of Julius Caesar | 0 | - | 4.47 | 32,915 |
| Roman Names for Places | 0 | - | 4.65 | 44,139 |
| History of The Netherlands | 0 | - | 4.44 | 16,433 |
| The Vikings! | 0 | - | 4.45 | 27,691 |
| Greenland Country Quiz | 0 | - | 4.83 | 34,172 |
| Countries Closest to Iceland | 0 | - | 4.88 | 67,647 |
| The Portuguese Empire | 0 | - | 4.54 | 11,641 |
| Geography of the Spanish Empire | 0 | - | 4.48 | 36,088 |
| Countries Closest to Spain | 0 | - | 4.95 | 215,512 |
| Countries that Beat Spain | 0 | - | 4.95 | 59,515 |
