| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,805 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,513 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 87,017 |
| Counties of England | 0 | - | 4.97 | 804,292 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,510 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,440 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,555 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,041 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,013 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,017 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,732 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,815 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,982 |
| States of Germany | 0 | - | 4.95 | 154,941 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,808 |
| Regions of Italy | 0 | - | 4.92 | 77,265 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,914 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,592 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,900 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,637 |
| Europe Map Quiz | 0 | - | 5.00 | 4,793,428 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,826 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,990 |
| France Cities Map Quiz | 0 | - | 4.96 | 168,003 |
| Departments of France | 0 | - | 4.93 | 55,401 |
| Germany Country Quiz | 0 | - | 4.82 | 159,051 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,240 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,439 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,231 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,783 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,629 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,040 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,040 |
| England or Wales? | 0 | - | 4.94 | 46,039 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,405 |
| The Vikings! | 0 | - | 4.46 | 28,424 |
| Name the English Monarchs | 0 | - | 4.91 | 507,393 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,489 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,375 |
| Geography of the British Empire | 0 | - | 4.48 | 39,876 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,966 |
| Name that Greek Letter | 0 | - | 4.93 | 325,284 |
| Malta Country Quiz | 0 | - | 4.81 | 31,262 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,239 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,601 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,495 |
| The Only European Country ... | 0 | - | 4.91 | 219,592 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,834 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,279 |
| The Trojan War | 0 | - | 4.83 | 40,073 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,073 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,216 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,693 |
| Roman Emperors | 0 | - | 4.95 | 121,437 |
| History of The Netherlands | 0 | - | 4.46 | 17,572 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,292 |
| Medieval English History | 0 | - | 4.53 | 43,689 |
| History of Russia Quiz | 0 | - | 4.47 | 32,026 |
| French History Multiple Choice | 0 | - | 4.55 | 33,277 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,910 |
| History of Italy | 0 | - | 4.55 | 32,185 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,851 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,469 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,144 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,354 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,105 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,261,429 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,234 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,785 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,530 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,275 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,909 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,190 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,527 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,367 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,919 |
| Slavic Countries | 0 | - | 4.96 | 112,513 |
| Regions of France | 0 | - | 4.70 | 122,404 |
| France Immigration by Country | 0 | - | 4.70 | 77,011 |
| History of Germany | 0 | - | 4.39 | 53,003 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,575 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,442 |
| Ancient Greek Words | 0 | - | 4.93 | 112,660 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,936 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,456 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,960 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,849 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,834 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,255 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,673 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.75 | 12,361 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,097 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,992 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,729 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,869 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,626 |
| Monarchies of Europe | 0 | - | 4.90 | 99,039 |
| European Countries with One Border | 0 | - | 4.97 | 184,030 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,741 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,079 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,937 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,583 |
| French Inventions | 0 | - | 4.10 | 13,933 |
| History of Paris | 0 | - | 4.24 | 13,687 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,592 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,179 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,440 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,617 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,854 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,285 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,407 |
| History of Scotland | 0 | - | 4.51 | 21,191 |
| Champions League Winners | 0 | - | 4.92 | 1,018,031 |
| Countries That Border Russia | 0 | - | 4.98 | 464,926 |
| History of Austria | 0 | - | 4.70 | 17,992 |
| Austria Country Quiz | 0 | - | 4.57 | 60,119 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,377 |
| France Country Quiz | 0 | - | 4.70 | 135,803 |
| Geography of the French Empire | 0 | - | 4.45 | 27,234 |
| The French Revolution | 0 | - | 4.47 | 24,165 |
| Countries Bordering France | 0 | - | 4.83 | 405,363 |
| Kings of France Quiz | 0 | - | 4.22 | 32,970 |
| History of France | 0 | - | 4.61 | 57,725 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,577 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,257 |
| Greece Country Quiz | 0 | - | 4.74 | 66,714 |
| Italy Country Quiz | 0 | - | 4.77 | 124,216 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,989 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,724 |
| Netherlands Country Quiz | 0 | - | 4.52 | 81,050 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,800 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,416 |
| The Portuguese Empire | 0 | - | 4.58 | 12,117 |
| Spain Country Quiz | 0 | - | 4.44 | 129,396 |
| Switzerland Country Quiz | 0 | - | 4.52 | 63,724 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,459 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,884 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,496 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,869 |
| Counties of Wales | 0 | - | 4.63 | 39,682 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,072 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,951 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,335 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,328 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,264 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,377 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,126 |
| Russia Country Quiz | 0 | - | 4.83 | 115,448 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,831 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,641 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 21,027 |
| Figures from Greek Mythology | 0 | - | 4.91 | 191,665 |
| History of Ireland | 0 | - | 4.39 | 31,489 |
| Countries Italy Declared War On | 0 | - | 4.74 | 48,186 |
| Canary Islands | 0 | - | 4.62 | 17,549 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,121 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,159 |
| British Spellings | 0 | - | 4.06 | 99,625 |
| British Groups of Things | 0 | - | 4.26 | 83,044 |
| British Acronyms | 0 | - | 4.40 | 45,974 |
| UK Immigration by Country | 0 | - | 4.94 | 141,900 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,127 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,273 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 25,859 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,219 |
| Geography of Scotland | 0 | - | 4.63 | 21,819 |
| Former Dominions of the British Empire | 0 | - | 4.27 | 24,282 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,485 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,707 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,731,150 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,990 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,060 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,402 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,741 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,826 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,070 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,055 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,274 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,779 |
| Countries that Border Poland | 0 | - | 4.99 | 173,347 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,354 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 103,284 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,107 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,093 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,063 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,215 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,269 |
| Countries Bordering Austria | 0 | - | 4.97 | 119,047 |
| 20 Questions About France | 0 | - | 4.11 | 32,485 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,217 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,566 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.40 | 82,825 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 99,144 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,475 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,890 |
| Counties of Ireland | 0 | - | 4.92 | 197,689 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,372 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,657 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,385 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,265 |
