| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,479 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,772 |
| Europe Map Quiz | 0 | - | 5.00 | 4,790,115 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,439 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,683 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,874 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,919 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,637 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,090 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,964 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,287 |
| The Only European Country ... | 0 | - | 4.91 | 219,265 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,643 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,367 |
| Name the English Monarchs | 0 | - | 4.91 | 506,895 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,922 |
| History of Russia Quiz | 0 | - | 4.47 | 32,009 |
| History of Italy | 0 | - | 4.55 | 32,161 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,830 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,438 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,115 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,649 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,146 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,996 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,841 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,911 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,089 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,254 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,829 |
| Slavic Countries | 0 | - | 4.96 | 112,424 |
| The Trojan War | 0 | - | 4.83 | 40,015 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,318 |
| Name that Greek Letter | 0 | - | 4.93 | 325,094 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,043 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,627 |
| Roman Emperors | 0 | - | 4.95 | 121,298 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,259,420 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,326 |
| Counties of England | 0 | - | 4.97 | 803,451 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,034 |
| History of Austria | 0 | - | 4.70 | 17,981 |
| Geography of the French Empire | 0 | - | 4.45 | 27,221 |
| The French Revolution | 0 | - | 4.47 | 24,153 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,564 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,665 |
| The Vikings! | 0 | - | 4.46 | 28,412 |
| The Portuguese Empire | 0 | - | 4.58 | 12,113 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,846 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,041 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,698 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,888 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,607 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,686 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,526 |
| Monarchies of Europe | 0 | - | 4.90 | 98,933 |
| European Countries with One Border | 0 | - | 4.97 | 183,888 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,607 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,965 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,661 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,509 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,715 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,874 |
| States of Germany | 0 | - | 4.95 | 154,680 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,735 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,986 |
| Regions of Italy | 0 | - | 4.92 | 77,154 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,840 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,425 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,816 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,564 |
| Champions League Winners | 0 | - | 4.92 | 1,016,814 |
| History of France | 0 | - | 4.61 | 57,664 |
| Ancient Greek Words | 0 | - | 4.93 | 112,558 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,472 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,300 |
| Geography of the British Empire | 0 | - | 4.48 | 39,854 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,968 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,862 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,724 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 122,857 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,038 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,031 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,046 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,005 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,884 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,967 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,713 |
| Russia Country Quiz | 0 | - | 4.83 | 115,366 |
| Countries That Border Russia | 0 | - | 4.98 | 464,645 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,781 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,607 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,960 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,877 |
| Departments of France | 0 | - | 4.93 | 55,245 |
| Countries Bordering France | 0 | - | 4.83 | 405,069 |
| Germany Country Quiz | 0 | - | 4.82 | 158,916 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,131 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,991 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,455 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,294 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,107 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,753 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,539 |
| History of The Netherlands | 0 | - | 4.46 | 17,561 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,540 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,938 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,879 |
| England or Wales? | 0 | - | 4.94 | 45,987 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,265 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,818 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,595 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,489 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,250 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,054 |
| Countries Italy Declared War On | 0 | - | 4.70 | 46,421 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,011 |
| History of Spain | 0 | - | 4.23 | 21,167 |
| Medieval English History | 0 | - | 4.53 | 43,666 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,854 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.75 | 12,348 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,375 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,840 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,898 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,765 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,988 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,152 |
| Countries that Border Poland | 0 | - | 4.99 | 173,232 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,307 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,997 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,036 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,064 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,043 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,133 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,106 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,975 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,178 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,514 |
| French History Multiple Choice | 0 | - | 4.55 | 33,250 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,818 |
| History of Germany | 0 | - | 4.39 | 52,984 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,357 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,864 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,985 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,984 |
| Counties of Ireland | 0 | - | 4.92 | 197,424 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,293 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,477 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,333 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,225 |
| Roman Names for Places | 0 | - | 4.62 | 58,737 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,320 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,220 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,490 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,830 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,986 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,247 |
| Houses of British Monarchs | 0 | - | 4.54 | 65,980 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,336 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,099 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,094 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,338 |
| Malta Country Quiz | 0 | - | 4.81 | 31,244 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,792 |
| Australian Capitals | 0 | - | 4.92 | 62,841 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,727,776 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,783 |
| Official European Union Languages | 0 | - | 4.97 | 239,892 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,715 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,658 |
| Russian Inventions | 0 | - | 4.39 | 13,020 |
| French Inventions | 0 | - | 4.10 | 13,929 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,739 |
| History of Paris | 0 | - | 4.24 | 13,682 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,390 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,592 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,168 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,227 |
| Byzantine History | 0 | - | 4.91 | 29,031 |
| Byzantine Emperors | 0 | - | 4.93 | 14,625 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,202 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,914 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,379 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,128 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,583 |
| Prime Ministers of the UK | 0 | - | 4.95 | 442,667 |
| 2026–2027 Football League Teams | 0 | - | 4.94 | 407,347 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,180 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,178 |
| Countries by Founding Story | 0 | - | 4.95 | 77,852 |
| Independence from Whom | 0 | - | 4.99 | 213,213 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,555 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,886 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,777 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,283 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,683 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,151 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,375 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,208 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,694 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,239 |
