| Countries Italy Declared War On | 0 | - | 4.75 | 43,534 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,305 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,998 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,427 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,400 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,538 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,316 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,073 |
| Europe Map Quiz | 0 | - | 5.00 | 4,778,258 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,669 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,385 |
| Name the English Monarchs | 0 | - | 4.91 | 505,005 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 97,699 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 136,332 |
| The Vietnam War | 0 | - | 4.44 | 35,614 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,275 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,972 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,696 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,767 |
| Asia Map Quiz | 0 | - | 4.99 | 922,235 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,455 |
| The Trojan War | 0 | - | 4.83 | 39,910 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,248 |
| Name that Greek Letter | 0 | - | 4.93 | 324,524 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,573 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,420 |
| Roman Emperors | 0 | - | 4.95 | 120,756 |
| Prime Ministers of the UK | 0 | - | 4.95 | 441,077 |
| Hindu Countries | 0 | - | 4.87 | 50,417 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,133 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,572 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 116,572 |
| The Only European Country ... | 0 | - | 4.91 | 218,111 |
| European Countries NOT in NATO | 0 | - | 4.90 | 62,050 |
| History of Russia Quiz | 0 | - | 4.47 | 31,977 |
| History of Italy | 0 | - | 4.55 | 32,100 |
| Byzantine History | 0 | - | 4.91 | 28,972 |
| Byzantine Emperors | 0 | - | 4.92 | 14,469 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,763 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,362 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,022 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,621 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,885 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 51,027 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,376 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,350 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,252,450 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,332,983 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,215 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,776 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,053 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,558 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,996 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,955 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 174,535 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,851 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,584 |
| Slavic Countries | 0 | - | 4.96 | 112,117 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,705 |
| Ancient Greek Words | 0 | - | 4.93 | 112,163 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,559 |
| Counties of England | 0 | - | 4.97 | 800,694 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,647 |
| Flags of Asia Quiz | 0 | - | 4.99 | 617,625 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,571 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,282 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,652 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 108,911 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,487 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,031 |
| Countries of the Middle East | 0 | - | 4.96 | 202,136 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,758 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,760 |
| Champions League Winners | 0 | - | 4.92 | 1,012,293 |
| The Iraq War | 0 | - | 4.47 | 15,688 |
| The American Revolution | 0 | - | 4.52 | 54,315 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,426 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,260 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,145 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,071 |
| Least Forested Countries in Asia | 0 | - | 4.75 | 64,854 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,217 |
| Monarchies of Europe | 0 | - | 4.90 | 98,553 |
| European Countries with One Border | 0 | - | 4.97 | 183,412 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,181 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,985 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,017 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,122 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,586 |
| Countries That Border Russia | 0 | - | 4.98 | 463,707 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,284 |
| History of Austria | 0 | - | 4.70 | 17,945 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,094 |
| Geography of the French Empire | 0 | - | 4.45 | 27,187 |
| The French Revolution | 0 | - | 4.47 | 24,099 |
| Countries Bordering France | 0 | - | 4.83 | 404,164 |
| History of France | 0 | - | 4.61 | 57,426 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,449 |
| States of Germany | 0 | - | 4.95 | 153,836 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,534 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,472 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,475 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,186 |
| Regions of Italy | 0 | - | 4.92 | 76,558 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,596 |
| The Vikings! | 0 | - | 4.46 | 28,386 |
| The Portuguese Empire | 0 | - | 4.58 | 12,091 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,873 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,544 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,321 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,432 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,067 |
| Geography of the British Empire | 0 | - | 4.48 | 39,802 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,642 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,792 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 106,525 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,809 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 136,906 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,587 |
| Monarchies of Asia | 0 | - | 4.97 | 71,354 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,139 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,111 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,772 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,544 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,477 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,135 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,900 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,005 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,227 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,297 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,472 |
| Russia Country Quiz | 0 | - | 4.83 | 115,064 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,587 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,485 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,856 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,440 |
| Departments of France | 0 | - | 4.93 | 54,755 |
| Germany Country Quiz | 0 | - | 4.83 | 158,505 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,845 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,158 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,988 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,903 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,205 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,925 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,810 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,678 |
| History of The Netherlands | 0 | - | 4.46 | 17,513 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,273 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,505 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,331 |
| Medieval English History | 0 | - | 4.53 | 43,612 |
| England or Wales? | 0 | - | 4.94 | 45,871 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,478 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,602 |
| Top 10 Richest Countries in Asia | 0 | - | 4.74 | 105,994 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,455 |
| Countries Closest to the Persian Gulf | 0 | - | 4.93 | 83,589 |
| Qatar Country Quiz | 0 | - | 4.86 | 31,637 |
| Jordan Country Quiz | 0 | - | 4.86 | 31,987 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,606 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,860 |
| China Cities Map Quiz | 0 | - | 4.94 | 105,668 |
| Provinces of China Map Quiz | 0 | - | 4.92 | 94,174 |
| Japan Country Quiz | 0 | - | 4.93 | 143,009 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 33,175 |
| States of India Map Quiz | 0 | - | 4.83 | 26,739 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,582 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 58,453 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,894 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,905 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,988 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,824 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,716,280 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,498 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,295 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,265 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,695 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,601 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,246 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,134 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,732 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,076 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,528 |
| Countries that Border Poland | 0 | - | 4.99 | 172,858 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,098 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,313 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,077 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,856 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,973 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,947 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,853 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,989 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,789 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,048 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,362 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,531 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,005 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,911 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,387 |
| History of Germany | 0 | - | 4.39 | 52,933 |
