| The Trojan War | 0 | - | 4.83 | 39,808 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,290 |
| Name the English Monarchs | 0 | - | 4.91 | 504,140 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,322 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,080 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,538 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,214 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,664 |
| Roman Emperors | 0 | - | 4.95 | 120,438 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,562 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,787 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,595 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,139 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,356 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,170 |
| Europe Map Quiz | 0 | - | 5.00 | 4,772,436 |
| Countries Bordering France | 0 | - | 4.83 | 403,650 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,773 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,923 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,592 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,792 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,209 |
| Departments of France | 0 | - | 4.93 | 54,511 |
| Germany Country Quiz | 0 | - | 4.83 | 158,219 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,668 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,700 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,641 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,621 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,134 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,266 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,037 |
| England or Wales? | 0 | - | 4.94 | 45,812 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,174 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,869 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,679 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,975 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,291 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,438 |
| Counties of Ireland | 0 | - | 4.92 | 196,124 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,036 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,388 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,563 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,404 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,344 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,813 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,027 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,770 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,086 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,951 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,073 |
| Name that Greek Letter | 0 | - | 4.93 | 324,223 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,848 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,431 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,670 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,039 |
| Finland Country Quiz | 0 | - | 4.50 | 59,801 |
| Norway Country Quiz | 0 | - | 4.44 | 77,518 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,256 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,764 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,535 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,088 |
| Medieval English History | 0 | - | 4.53 | 43,578 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,646 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,124 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,744 |
| The Only European Country ... | 0 | - | 4.91 | 217,492 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,636 |
| History of Russia Quiz | 0 | - | 4.47 | 31,957 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,720 |
| History of Italy | 0 | - | 4.55 | 32,062 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,797 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,999 |
| Roman Names for Places | 0 | - | 4.62 | 58,417 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,725 |
| Greenland Country Quiz | 0 | - | 4.78 | 36,426 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,004 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,303 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,966 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,852 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,788 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,213 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,004 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 68,599 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,249,154 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,077 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,961 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,469 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,478 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,381 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,485 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,352 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,609 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,442 |
| Slavic Countries | 0 | - | 4.96 | 111,921 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,020 |
| Ancient Greek Words | 0 | - | 4.93 | 111,937 |
| Counties of England | 0 | - | 4.97 | 799,177 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,356 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,033 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,666 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,182 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,161 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,290 |
| Sweden Country Quiz | 0 | - | 4.35 | 68,326 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,272 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,304 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,772 |
| History of Scotland | 0 | - | 4.51 | 21,134 |
| Champions League Winners | 0 | - | 4.92 | 1,010,194 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,978 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,066 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,890 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,761 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,027 |
| Monarchies of Europe | 0 | - | 4.90 | 98,377 |
| European Countries with One Border | 0 | - | 4.97 | 183,159 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,937 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,078 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,093 |
| Countries That Border Russia | 0 | - | 4.98 | 462,914 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,129 |
| History of Austria | 0 | - | 4.70 | 17,912 |
| Austria Country Quiz | 0 | - | 4.57 | 59,853 |
| Belgium Country Quiz | 0 | - | 4.72 | 71,964 |
| France Country Quiz | 0 | - | 4.70 | 135,222 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,893 |
| Geography of the French Empire | 0 | - | 4.45 | 27,157 |
| The French Revolution | 0 | - | 4.47 | 24,070 |
| Kings of France Quiz | 0 | - | 4.20 | 32,825 |
| History of France | 0 | - | 4.61 | 57,298 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,254 |
| States of Germany | 0 | - | 4.95 | 153,301 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,308 |
| Greece Country Quiz | 0 | - | 4.74 | 66,386 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,524 |
| Regions of Italy | 0 | - | 4.92 | 76,304 |
| Italy Country Quiz | 0 | - | 4.77 | 123,641 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,206 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,831 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,574 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,674 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,460 |
| The Vikings! | 0 | - | 4.46 | 28,372 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,221 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,044 |
| The Portuguese Empire | 0 | - | 4.58 | 12,086 |
| Spain Country Quiz | 0 | - | 4.44 | 128,817 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,467 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,470 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,431 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,179 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,173 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,770 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,409 |
| English Royal Consorts | 0 | - | 4.38 | 37,420 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,691 |
| Geography of the British Empire | 0 | - | 4.48 | 39,744 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,760 |
| Counties of Wales | 0 | - | 4.63 | 39,394 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,383 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,288 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,004 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,435 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,705 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,399 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,086 |
| Russia Country Quiz | 0 | - | 4.83 | 114,729 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,501 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,423 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,876 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,800 |
| History of Ireland | 0 | - | 4.39 | 31,295 |
| Byzantine History | 0 | - | 4.91 | 28,920 |
| Byzantine Emperors | 0 | - | 4.92 | 14,381 |
| History of The Netherlands | 0 | - | 4.46 | 17,489 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,295 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,536 |
| UK Immigration by Country | 0 | - | 4.94 | 141,192 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,244 |
| British Monopoly Board | 0 | - | 4.52 | 41,197 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,074 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,120 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,709,750 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,284 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,275 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,197 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,676 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,531 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,693 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,658 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,411 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,430 |
| Countries that Border Poland | 0 | - | 4.99 | 172,646 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,999 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,090 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,603 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,450 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,931 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,891 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,686 |
