| Name the English Monarchs | 0 | - | 4.91 | 500,551 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,850 |
| The Trojan War | 0 | - | 4.83 | 39,597 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,295 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,330 |
| Roman Emperors | 0 | - | 4.95 | 119,426 |
| Monarchies of Europe | 0 | - | 4.90 | 97,770 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,705 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,512 |
| Countries Bordering France | 0 | - | 4.83 | 401,380 |
| Departments of France | 0 | - | 4.93 | 53,454 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,668 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,731 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,025 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,777 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,934 |
| French History Multiple Choice | 0 | - | 4.55 | 32,964 |
| English Royal Consorts | 0 | - | 4.37 | 37,285 |
| French History A-Z | 0 | - | 4.22 | 24,457 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,804 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,885 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,852 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,178 |
| Medieval English History | 0 | - | 4.53 | 43,423 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,645 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 75,949 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,075 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,561 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,453 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,930 |
| Monarchies of Asia | 0 | - | 4.97 | 70,877 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,708 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,584 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,083 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,269 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,151 |
| Germany Country Quiz | 0 | - | 4.82 | 157,307 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,686 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,189 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,319 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,562 |
| Italy Country Quiz | 0 | - | 4.82 | 122,790 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,925 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,605 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,468 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,652 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,814 |
| Roman Names for Places | 0 | - | 4.62 | 58,094 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,514 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,144 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,982 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,690 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,066 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,905 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,468 |
| England or Wales? | 0 | - | 4.94 | 45,518 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,180 |
| Europe Map Quiz | 0 | - | 5.00 | 4,748,884 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,326 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,587 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,074 |
| France Country Quiz | 0 | - | 4.70 | 134,574 |
| History of France | 0 | - | 4.59 | 56,678 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,631 |
| Counties of Ireland | 0 | - | 4.92 | 194,213 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,668 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,466 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,348 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,946 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,708 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,202 |
| History of Scotland | 0 | - | 4.51 | 21,055 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,111 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,549 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,820 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,558 |
| Geography of the French Empire | 0 | - | 4.45 | 27,008 |
| The French Revolution | 0 | - | 4.46 | 23,878 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,933 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,918 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,460 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,128 |
| Name that Greek Letter | 0 | - | 4.93 | 322,754 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,195 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,147 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,006 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,704 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,971 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,442 |
| Countries in World War I | 0 | - | 4.88 | 227,579 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,460 |
| Countries that Beat France | 0 | - | 4.49 | 75,512 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,798 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,220 |
| British Monopoly Board | 0 | - | 4.52 | 41,108 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,187 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,141 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,236,435 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,324,281 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,474 |
| The Only European Country ... | 0 | - | 4.91 | 215,428 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,475 |
| History of Russia Quiz | 0 | - | 4.49 | 31,859 |
| 20 Questions About France | 0 | - | 4.11 | 32,369 |
| Ancient Greek Words | 0 | - | 4.93 | 111,186 |
| History of Italy | 0 | - | 4.55 | 31,911 |
| Italian History A-Z | 0 | - | 4.21 | 17,638 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,586 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,115 |
| Spanish History A-Z | 0 | - | 4.37 | 19,238 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,004 |
| Counties of England | 0 | - | 4.97 | 793,245 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,750 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,680 |
| British History A-Z #1 | 0 | - | 4.45 | 46,330 |
| History of London | 0 | - | 4.33 | 26,146 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,384 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,777 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,045 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,243 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,781 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,672 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,839 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,872 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,537 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,798 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,829 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,587 |
| Slavic Countries | 0 | - | 4.96 | 111,332 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,167 |
| Regions of France | 0 | - | 4.78 | 120,105 |
| France Immigration by Country | 0 | - | 4.70 | 76,277 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,151 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,283 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,094 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,318 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,430 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,882 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,168 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,578 |
| British Geography A-Z | 0 | - | 4.41 | 19,476 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,484 |
| Champions League Winners | 0 | - | 4.92 | 1,001,683 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,421 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,852 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,877 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,536 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,727 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,660 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,512 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,050 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,639 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,673 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,249 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,323 |
| European Countries with One Border | 0 | - | 4.97 | 182,241 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,098 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,872 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,744 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,156 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,048 |
| Russia Country Quiz | 0 | - | 4.85 | 114,111 |
| Federal Subjects of Russia | 0 | - | 4.95 | 145,660 |
| Countries That Border Russia | 0 | - | 4.98 | 460,577 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,143 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,589 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,225 |
| History of Austria | 0 | - | 4.70 | 17,815 |
| Austria Country Quiz | 0 | - | 4.57 | 59,560 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,530 |
| French Inventions | 0 | - | 4.08 | 13,881 |
| History of Paris | 0 | - | 4.24 | 13,632 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,312 |
| States of Germany | 0 | - | 4.96 | 151,324 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,443 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,679 |
| German History A-Z | 0 | - | 4.49 | 24,535 |
| Greece Country Quiz | 0 | - | 4.74 | 66,030 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,021 |
| History of Ireland | 0 | - | 4.39 | 31,043 |
| Regions of Italy | 0 | - | 4.92 | 75,309 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,635 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,385 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,278 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 50,886 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,300 |
| The Vikings! | 0 | - | 4.46 | 28,300 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,941 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,640 |
| The Portuguese Empire | 0 | - | 4.58 | 12,035 |
| Spain Country Quiz | 0 | - | 4.45 | 128,131 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,340 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,523 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,170 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,799 |
| UK Immigration by Country | 0 | - | 4.94 | 140,467 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,100 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,406 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,472 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,646 |
