| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,358 |
| History of Italy | 0 | - | 4.55 | 32,115 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,788 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,391 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,050 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,662 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,126 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,803 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,538 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,657 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,419 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,814 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,700 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,317 |
| History of Austria | 0 | - | 4.70 | 17,959 |
| Geography of the French Empire | 0 | - | 4.45 | 27,200 |
| The French Revolution | 0 | - | 4.47 | 24,120 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,546 |
| The Vikings! | 0 | - | 4.46 | 28,395 |
| The Portuguese Empire | 0 | - | 4.58 | 12,096 |
| Name the English Monarchs | 0 | - | 4.91 | 505,558 |
| History of France | 0 | - | 4.61 | 57,493 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,368 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,805 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,796 |
| The Only European Country ... | 0 | - | 4.91 | 218,465 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,213 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,878 |
| Name that Greek Letter | 0 | - | 4.93 | 324,722 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,008 |
| History of Russia Quiz | 0 | - | 4.47 | 31,988 |
| The Trojan War | 0 | - | 4.83 | 39,940 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,720 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,503 |
| Roman Emperors | 0 | - | 4.95 | 120,940 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,254,361 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,020 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,321 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,865 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,320 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,630 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,291 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,102 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,973 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,658 |
| Slavic Countries | 0 | - | 4.96 | 112,214 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,635 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,204 |
| History of Spain | 0 | - | 4.23 | 21,147 |
| Counties of England | 0 | - | 4.97 | 801,513 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,541 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,326 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,109 |
| Ancient Greek Words | 0 | - | 4.93 | 112,284 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,590 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,356 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,266 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,262 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,313 |
| Monarchies of Europe | 0 | - | 4.90 | 98,686 |
| European Countries with One Border | 0 | - | 4.97 | 183,543 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,294 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,323 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,026 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,349 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,395 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,594 |
| States of Germany | 0 | - | 4.95 | 154,084 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,566 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 75,026 |
| Regions of Italy | 0 | - | 4.92 | 76,764 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,423 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,676 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,068 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,634 |
| American to British Word Translation | 0 | - | 4.14 | 139,563 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,028 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,399 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,440 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,137 |
| Geography of the British Empire | 0 | - | 4.48 | 39,821 |
| Champions League Winners | 0 | - | 4.92 | 1,013,763 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,674 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,610 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,227 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,519 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,509 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,885 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,659 |
| Russia Country Quiz | 0 | - | 4.83 | 115,167 |
| Countries That Border Russia | 0 | - | 4.98 | 464,019 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,641 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,513 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,883 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,555 |
| Departments of France | 0 | - | 4.93 | 54,903 |
| Countries Bordering France | 0 | - | 4.83 | 404,448 |
| Germany Country Quiz | 0 | - | 4.82 | 158,621 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,931 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,424 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,043 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,896 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,711 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,167 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,348 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,649 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,501 |
| England or Wales? | 0 | - | 4.94 | 45,905 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,707 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,356 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,902 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,705 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,330 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,573 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,183 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,012 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,930 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,441 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,710 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,572 |
| History of The Netherlands | 0 | - | 4.46 | 17,531 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,594 |
| Medieval English History | 0 | - | 4.53 | 43,622 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,311 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,719,755 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,591 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,298 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,643 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,818 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,840 |
| Countries that Border Poland | 0 | - | 4.99 | 172,989 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,161 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,376 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,907 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,999 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,980 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,939 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,021 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,854 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,088 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,404 |
| French History Multiple Choice | 0 | - | 4.55 | 33,189 |
| Geography of Germany | 0 | - | 4.35 | 17,250 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,188 |
| History of Germany | 0 | - | 4.39 | 52,950 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,178 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,798 |
| Counties of Ireland | 0 | - | 4.92 | 196,892 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,182 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,116 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 44,128 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,165 |
| Roman Names for Places | 0 | - | 4.62 | 58,623 |
| Byzantine History | 0 | - | 4.91 | 28,997 |
| Byzantine Emperors | 0 | - | 4.93 | 14,523 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,289 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,846 |
| British to American Word Translation | 0 | - | 3.74 | 255,283 |
| British Foods by Description | 0 | - | 3.94 | 48,368 |
| British and American Word Differences | 0 | - | 2.63 | 46,917 |
| British Geography Quiz #2 | 0 | - | 4.29 | 28,196 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,045 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,811 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,917 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,223 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,885 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,279 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,057 |
| Prime Ministers of the UK | 0 | - | 4.95 | 441,545 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,972 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,199 |
| Bridges of London | 0 | - | 4.17 | 10,136 |
| British Sport Trivia | 0 | - | 4.37 | 20,512 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 404,018 |
| Famous Welsh People | 0 | - | 4.34 | 11,658 |
| Malta Country Quiz | 0 | - | 4.81 | 31,207 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,632 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,670 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,006 |
| Russian History A-Z | 0 | - | 4.35 | 32,121 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,425 |
| Russian Inventions | 0 | - | 4.39 | 13,008 |
| French Inventions | 0 | - | 4.10 | 13,919 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,596 |
| History of Paris | 0 | - | 4.24 | 13,670 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,136 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,458 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,218 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,225 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,150 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,056 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,994 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,752 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,243 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,956 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,350 |
| British History A-Z #1 | 0 | - | 4.45 | 47,125 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 61,013 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,948 |
| History of Scotland | 0 | - | 4.51 | 21,157 |
