| Regions of Italy | 0 | - | 4.92 | 76,678 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,013 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,700 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,504 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,257 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,712 |
| Counties of England | 0 | - | 4.97 | 801,223 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,338 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,477 |
| Roman Emperors | 0 | - | 4.95 | 120,876 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,076 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,665 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,483 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,617 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,377 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,351 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,525 |
| States of Germany | 0 | - | 4.95 | 153,979 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,525 |
| History of Italy | 0 | - | 4.55 | 32,107 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,646 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,993 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,604 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,373 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,544 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,952 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,691 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,874 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,511 |
| Departments of France | 0 | - | 4.93 | 54,851 |
| Germany Country Quiz | 0 | - | 4.83 | 158,561 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,893 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,870 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,318 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,583 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,460 |
| England or Wales? | 0 | - | 4.94 | 45,892 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,165 |
| Italy Country Quiz | 0 | - | 4.77 | 123,878 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,033 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,410 |
| Name the English Monarchs | 0 | - | 4.91 | 505,369 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,435 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,112 |
| Geography of the British Empire | 0 | - | 4.48 | 39,813 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,690 |
| Name that Greek Letter | 0 | - | 4.93 | 324,653 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,161 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,049 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,341 |
| Malta Country Quiz | 0 | - | 4.81 | 31,198 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,262 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,703 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,729 |
| The Only European Country ... | 0 | - | 4.91 | 218,334 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,140 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,172 |
| The Trojan War | 0 | - | 4.83 | 39,930 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,002 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,667 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,350 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,557 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,023 |
| History of The Netherlands | 0 | - | 4.46 | 17,529 |
| Medieval English History | 0 | - | 4.53 | 43,618 |
| History of Russia Quiz | 0 | - | 4.47 | 31,985 |
| French History Multiple Choice | 0 | - | 4.55 | 33,178 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,124 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 44,051 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,153 |
| Roman Names for Places | 0 | - | 4.62 | 58,607 |
| Byzantine History | 0 | - | 4.91 | 28,987 |
| Byzantine Emperors | 0 | - | 4.92 | 14,498 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,781 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,379 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,039 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,271 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,052 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,307 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 68,832 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,687 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,602 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,280 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,829 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,201 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,607 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,159 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 174,915 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,933 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,640 |
| Slavic Countries | 0 | - | 4.96 | 112,180 |
| Regions of France | 0 | - | 4.70 | 121,725 |
| France Immigration by Country | 0 | - | 4.70 | 76,827 |
| History of Germany | 0 | - | 4.39 | 52,944 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,322 |
| Ancient Greek Words | 0 | - | 4.93 | 112,233 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,631 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,379 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,649 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,764 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,808 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,213 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,053 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,555 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,317 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,229 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,195 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,279 |
| Monarchies of Europe | 0 | - | 4.90 | 98,639 |
| European Countries with One Border | 0 | - | 4.97 | 183,503 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,242 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,261 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,901 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,320 |
| French Inventions | 0 | - | 4.10 | 13,918 |
| History of Paris | 0 | - | 4.24 | 13,667 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,969 |
| Italian Inventions | 0 | - | 3.81 | 18,467 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,909 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,655 |
| History of Scotland | 0 | - | 4.51 | 21,151 |
| Champions League Winners | 0 | - | 4.92 | 1,013,073 |
| Countries That Border Russia | 0 | - | 4.98 | 463,894 |
| History of Austria | 0 | - | 4.70 | 17,950 |
| Austria Country Quiz | 0 | - | 4.57 | 59,970 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,121 |
| France Country Quiz | 0 | - | 4.70 | 135,441 |
| Geography of the French Empire | 0 | - | 4.45 | 27,193 |
| The French Revolution | 0 | - | 4.47 | 24,108 |
| Countries Bordering France | 0 | - | 4.83 | 404,343 |
| Kings of France Quiz | 0 | - | 4.20 | 32,876 |
| History of France | 0 | - | 4.61 | 57,461 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,541 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,321 |
| Greece Country Quiz | 0 | - | 4.74 | 66,532 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,707 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,691 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,235 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,893 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,639 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,813 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,649 |
| The Vikings! | 0 | - | 4.46 | 28,391 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,310 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,201 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| Spain Country Quiz | 0 | - | 4.44 | 129,054 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,566 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,263 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,817 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,418 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,805 |
| Counties of Wales | 0 | - | 4.63 | 39,513 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,603 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,553 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,122 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,427 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,419 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,702 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,597 |
| Russia Country Quiz | 0 | - | 4.83 | 115,136 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,618 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,504 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,920 |
| History of Ireland | 0 | - | 4.39 | 31,371 |
| Italian Foods | 0 | - | 4.30 | 73,124 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,156 |
| Canary Islands | 0 | - | 4.62 | 17,513 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,583 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,954 |
| British Spellings | 0 | - | 4.06 | 99,558 |
| British Groups of Things | 0 | - | 4.25 | 82,975 |
| British Acronyms | 0 | - | 4.40 | 45,899 |
| UK Immigration by Country | 0 | - | 4.94 | 141,456 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,085 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,655 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 25,583 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,056 |
| Geography of Scotland | 0 | - | 4.63 | 21,704 |
| Former Dominions of the British Empire | 0 | - | 4.27 | 24,248 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,622 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,330 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,718,661 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,568 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,695 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,286 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,699 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,627 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,259 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,777 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,792 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,559 |
| Countries that Border Poland | 0 | - | 4.99 | 172,938 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,130 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,269 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,888 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,991 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,969 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,908 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,007 |
