| Regions of Italy | 0 | - | 4.92 | 76,415 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,801 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,637 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,370 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,139 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,583 |
| Counties of England | 0 | - | 4.97 | 799,797 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,249 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,995 |
| Roman Emperors | 0 | - | 4.95 | 120,536 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,859 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,902 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,227 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,428 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,230 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,969 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,323 |
| States of Germany | 0 | - | 4.95 | 153,545 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,360 |
| History of Italy | 0 | - | 4.55 | 32,084 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,513 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,645 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,487 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,237 |
| Europe Map Quiz | 0 | - | 5.00 | 4,774,424 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,247 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,630 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,815 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,289 |
| Departments of France | 0 | - | 4.93 | 54,606 |
| Germany Country Quiz | 0 | - | 4.83 | 158,315 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,734 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,700 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,177 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,345 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,152 |
| England or Wales? | 0 | - | 4.94 | 45,827 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,507 |
| Italy Country Quiz | 0 | - | 4.77 | 123,706 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,365 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,323 |
| Name the English Monarchs | 0 | - | 4.91 | 504,492 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,424 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,972 |
| Geography of the British Empire | 0 | - | 4.48 | 39,771 |
| French Inventions | 0 | - | 4.10 | 13,911 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,604 |
| Name that Greek Letter | 0 | - | 4.93 | 324,332 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,062 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,135 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,464 |
| Malta Country Quiz | 0 | - | 4.81 | 31,135 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,091 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,838 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,306 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,923 |
| The Only European Country ... | 0 | - | 4.91 | 217,720 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,794 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,114 |
| The Trojan War | 0 | - | 4.83 | 39,845 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,968 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,400 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,951 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,463 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,705 |
| History of The Netherlands | 0 | - | 4.46 | 17,499 |
| Medieval English History | 0 | - | 4.53 | 43,591 |
| History of Russia Quiz | 0 | - | 4.47 | 31,970 |
| French History Multiple Choice | 0 | - | 4.55 | 33,146 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,719 |
| Ancient Roman Trivia #2 | 0 | - | 4.59 | 41,742 |
| Geography of the Roman Empire | 0 | - | 4.56 | 52,051 |
| Roman Names for Places | 0 | - | 4.62 | 58,490 |
| Byzantine History | 0 | - | 4.91 | 28,940 |
| Byzantine Emperors | 0 | - | 4.92 | 14,415 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,745 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,323 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,991 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,232 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,018 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,283 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 68,670 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,250,349 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,724 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,051 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,555 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,675 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,460 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,696 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,836 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,696 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,494 |
| Slavic Countries | 0 | - | 4.96 | 111,993 |
| Regions of France | 0 | - | 4.70 | 121,413 |
| France Immigration by Country | 0 | - | 4.70 | 76,717 |
| History of Germany | 0 | - | 4.39 | 52,913 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,195 |
| Ancient Greek Words | 0 | - | 4.93 | 112,039 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,541 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,365 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,509 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,715 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,793 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,194 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,783 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,216 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,132 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,965 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,861 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,079 |
| Monarchies of Europe | 0 | - | 4.90 | 98,445 |
| European Countries with One Border | 0 | - | 4.97 | 183,252 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,025 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,475 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,272 |
| Russian Inventions | 0 | - | 4.39 | 12,986 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,191 |
| History of Paris | 0 | - | 4.24 | 13,665 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,738 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,460 |
| English Inventions #1 | 0 | - | 3.15 | 23,576 |
| English Inventions #2 | 0 | - | 3.95 | 8,710 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,349 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,309 |
| History of Scotland | 0 | - | 4.51 | 21,137 |
| Champions League Winners | 0 | - | 4.92 | 1,010,866 |
| Countries That Border Russia | 0 | - | 4.98 | 463,094 |
| History of Austria | 0 | - | 4.70 | 17,923 |
| Austria Country Quiz | 0 | - | 4.57 | 59,886 |
| Belgium Country Quiz | 0 | - | 4.72 | 71,995 |
| France Country Quiz | 0 | - | 4.70 | 135,289 |
| Geography of the French Empire | 0 | - | 4.45 | 27,168 |
| The French Revolution | 0 | - | 4.47 | 24,078 |
| Countries Bordering France | 0 | - | 4.83 | 403,826 |
| Kings of France Quiz | 0 | - | 4.20 | 32,845 |
| History of France | 0 | - | 4.61 | 57,346 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,913 |
| Greece Country Quiz | 0 | - | 4.74 | 66,425 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,609 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,664 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,213 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,848 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,591 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,702 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,585 |
| The Vikings! | 0 | - | 4.46 | 28,375 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,246 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,087 |
| The Portuguese Empire | 0 | - | 4.58 | 12,087 |
| Spain Country Quiz | 0 | - | 4.44 | 128,885 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,491 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,205 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,781 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,392 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,771 |
| Counties of Wales | 0 | - | 4.63 | 39,422 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,423 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,347 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,516 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,684 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,956 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,769 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,240 |
| Russia Country Quiz | 0 | - | 4.83 | 114,783 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,530 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,444 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,869 |
| History of Ireland | 0 | - | 4.39 | 31,313 |
| Italian Foods | 0 | - | 4.30 | 73,008 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,131 |
| Canary Islands | 0 | - | 4.62 | 17,499 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,377 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,864 |
| British Spellings | 0 | - | 4.06 | 99,527 |
| British Groups of Things | 0 | - | 4.25 | 82,931 |
| British Acronyms | 0 | - | 4.40 | 45,870 |
| UK Immigration by Country | 0 | - | 4.94 | 141,245 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,064 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,342 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 25,450 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,993 |
| Geography of Scotland | 0 | - | 4.63 | 21,677 |
| Former Dominions of the British Empire | 0 | - | 4.27 | 24,217 |
| Scottish Inventions | 0 | - | 3.83 | 9,979 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,219 |
| Chinese Inventions | 0 | - | 4.30 | 33,828 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,167 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,711,799 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,357 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,937 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,226 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,678 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,557 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,832 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,691 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,522 |
| Random Point on Land to European Country | 0 | - | 4.94 | 77,562 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,466 |
| Countries that Border Poland | 0 | - | 4.99 | 172,698 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,023 |
