| Countries Surrounding Rome | 0 | - | 4.97 | 49,528 |
| Regions of Italy | 0 | - | 4.92 | 75,674 |
| Italy Country Quiz | 0 | - | 4.82 | 123,272 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,186 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,989 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,651 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,156 |
| Counties of England | 0 | - | 4.97 | 795,357 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,914 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,448 |
| Roman Emperors | 0 | - | 4.95 | 119,742 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,988 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 78,901 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,392 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,790 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,694 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,240 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,644 |
| States of Germany | 0 | - | 4.96 | 152,120 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,931 |
| History of Italy | 0 | - | 4.55 | 31,950 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,997 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,744 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,096 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,902 |
| Europe Map Quiz | 0 | - | 5.00 | 4,757,699 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,996 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,430 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,640 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,549 |
| Departments of France | 0 | - | 4.93 | 53,919 |
| Germany Country Quiz | 0 | - | 4.82 | 157,675 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,964 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,868 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,784 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,472 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,345 |
| England or Wales? | 0 | - | 4.94 | 45,627 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,716 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,527 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,036 |
| Name the English Monarchs | 0 | - | 4.91 | 501,844 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,316 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,359 |
| Geography of the British Empire | 0 | - | 4.48 | 39,638 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,497 |
| Name that Greek Letter | 0 | - | 4.93 | 323,216 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,783 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,091 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,828 |
| Malta Country Quiz | 0 | - | 4.81 | 31,019 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,688 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,129 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,955 |
| The Only European Country ... | 0 | - | 4.91 | 216,184 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,876 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,953 |
| The Trojan War | 0 | - | 4.83 | 39,672 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,886 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,635 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,580 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,272 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,360 |
| History of The Netherlands | 0 | - | 4.46 | 17,418 |
| Medieval English History | 0 | - | 4.53 | 43,480 |
| History of Russia Quiz | 0 | - | 4.49 | 31,897 |
| French History Multiple Choice | 0 | - | 4.55 | 33,010 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,657 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,706 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,872 |
| Roman Names for Places | 0 | - | 4.62 | 58,216 |
| Byzantine History | 0 | - | 4.91 | 28,765 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,633 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,184 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,811 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,111 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,930 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,193 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 68,165 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,241,267 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,854 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,496 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,051 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,323 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,042 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,115 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 170,966 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,090 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,910 |
| Slavic Countries | 0 | - | 4.96 | 111,538 |
| Regions of France | 0 | - | 4.75 | 120,534 |
| France Immigration by Country | 0 | - | 4.70 | 76,438 |
| History of Germany | 0 | - | 4.39 | 52,790 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,919 |
| Ancient Greek Words | 0 | - | 4.93 | 111,430 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,261 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,240 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,121 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,600 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,742 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,138 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,962 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,731 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,335 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,048 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,585 |
| Monarchies of Europe | 0 | - | 4.90 | 98,007 |
| European Countries with One Border | 0 | - | 4.97 | 182,585 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,402 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,078 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,612 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,785 |
| French Inventions | 0 | - | 4.08 | 13,891 |
| History of Paris | 0 | - | 4.24 | 13,643 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,804 |
| Italian Inventions | 0 | - | 3.81 | 18,434 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,155 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,119 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,233 |
| History of Scotland | 0 | - | 4.51 | 21,080 |
| Champions League Winners | 0 | - | 4.92 | 1,004,923 |
| Countries That Border Russia | 0 | - | 4.98 | 461,294 |
| History of Austria | 0 | - | 4.70 | 17,844 |
| Austria Country Quiz | 0 | - | 4.57 | 59,672 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,710 |
| France Country Quiz | 0 | - | 4.70 | 134,843 |
| Geography of the French Empire | 0 | - | 4.45 | 27,038 |
| The French Revolution | 0 | - | 4.46 | 23,916 |
| Countries Bordering France | 0 | - | 4.83 | 402,082 |
| Kings of France Quiz | 0 | - | 4.20 | 32,694 |
| History of France | 0 | - | 4.59 | 56,889 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,465 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,756 |
| Greece Country Quiz | 0 | - | 4.74 | 66,176 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,414 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,169 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,711 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,456 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,440 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,413 |
| The Vikings! | 0 | - | 4.46 | 28,331 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,070 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,797 |
| The Portuguese Empire | 0 | - | 4.58 | 12,054 |
| Spain Country Quiz | 0 | - | 4.45 | 128,404 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,302 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,601 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,694 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,301 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,667 |
| Counties of Wales | 0 | - | 4.63 | 39,217 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,681 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,000 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,856 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,811 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,464 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,834 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,310 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,455 |
| Russia Country Quiz | 0 | - | 4.85 | 114,343 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,267 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,311 |
| History of Ireland | 0 | - | 4.39 | 31,133 |
| Italian Foods | 0 | - | 4.30 | 72,697 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,065 |
| Canary Islands | 0 | - | 4.62 | 17,466 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,813 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,636 |
| British Spellings | 0 | - | 4.06 | 99,419 |
| British Groups of Things | 0 | - | 4.25 | 82,843 |
| British Acronyms | 0 | - | 4.40 | 45,774 |
| UK Immigration by Country | 0 | - | 4.94 | 140,747 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,026 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,571 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 25,080 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,719 |
| Geography of Scotland | 0 | - | 4.63 | 21,602 |
| Former Dominions of the British Empire | 0 | - | 4.27 | 24,170 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,015 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,691,066 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,600 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,057 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,067 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,647 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,311 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,653 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,374 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,880 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,195 |
| Countries that Border Poland | 0 | - | 4.99 | 172,127 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,759 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,425 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,130 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,821 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,757 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,302 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,736 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,225 |
| 20 Questions About France | 0 | - | 4.11 | 32,402 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,810 |
