| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,765 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,108 |
| Europe Map Quiz | 0 | - | 5.00 | 4,746,569 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,556 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 75,877 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,983 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,504 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,390 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,449 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,297 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,605 |
| Name the English Monarchs | 0 | - | 4.92 | 500,176 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,764 |
| History of France | 0 | - | 4.59 | 56,643 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,707 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,359 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,864 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,986 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,263 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,348 |
| The Only European Country ... | 0 | - | 4.91 | 215,207 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,357 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,706 |
| Name that Greek Letter | 0 | - | 4.93 | 322,584 |
| History of Russia Quiz | 0 | - | 4.49 | 31,847 |
| The Trojan War | 0 | - | 4.83 | 39,575 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,192 |
| History of Italy | 0 | - | 4.55 | 31,906 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,294 |
| Roman Emperors | 0 | - | 4.95 | 119,260 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,570 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,100 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,725 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 67,838 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,234,961 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,624 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,170 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,719 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,482 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,785 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,386 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,541 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,756 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,536 |
| Slavic Countries | 0 | - | 4.96 | 111,273 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,114 |
| Counties of England | 0 | - | 4.97 | 792,699 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,625 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,485 |
| Ancient Greek Words | 0 | - | 4.93 | 111,121 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 42,759 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,627 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,433 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,949 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,525 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,257 |
| Monarchies of Europe | 0 | - | 4.90 | 97,710 |
| European Countries with One Border | 0 | - | 4.97 | 182,145 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,007 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,706 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,354 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,544 |
| History of Austria | 0 | - | 4.70 | 17,807 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,804 |
| Geography of the French Empire | 0 | - | 4.45 | 26,999 |
| The French Revolution | 0 | - | 4.46 | 23,866 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,180 |
| States of Germany | 0 | - | 4.96 | 151,133 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,423 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,552 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,194 |
| Regions of Italy | 0 | - | 4.92 | 75,231 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,842 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 49,026 |
| The Vikings! | 0 | - | 4.46 | 28,290 |
| The Portuguese Empire | 0 | - | 4.58 | 12,030 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,204 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,758 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,360 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,269 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,109 |
| Geography of the British Empire | 0 | - | 4.48 | 39,587 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,622 |
| Champions League Winners | 0 | - | 4.92 | 1,000,905 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,335 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,655 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,523 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,840 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,766 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,130 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,805 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,946 |
| Russia Country Quiz | 0 | - | 4.85 | 114,055 |
| Countries That Border Russia | 0 | - | 4.98 | 460,386 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,109 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,197 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,843 |
| Departments of France | 0 | - | 4.93 | 53,335 |
| Countries Bordering France | 0 | - | 4.83 | 401,182 |
| Germany Country Quiz | 0 | - | 4.82 | 157,209 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,579 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,037 |
| Italy Country Quiz | 0 | - | 4.82 | 122,702 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,855 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,487 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,446 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,195 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,446 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,061 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,888 |
| England or Wales? | 0 | - | 4.94 | 45,497 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,290 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,854 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,627 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,889 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,005 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,871 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,844 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,883 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,157 |
| History of The Netherlands | 0 | - | 4.46 | 17,364 |
| Medieval English History | 0 | - | 4.53 | 43,406 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,674,913 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,812 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,155 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,937 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,111 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,146 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,499 |
| Random Point on Land to European Country | 0 | - | 4.93 | 76,533 |
| Countries that Border Poland | 0 | - | 4.99 | 171,803 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,576 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,587 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,943 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,725 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,673 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,080 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,639 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,538 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,038 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,706 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,981 |
| French History Multiple Choice | 0 | - | 4.55 | 32,952 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,454 |
| History of Germany | 0 | - | 4.39 | 52,727 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,266 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,541 |
| Counties of Ireland | 0 | - | 4.92 | 194,065 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,642 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,926 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,632 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,795 |
| Roman Names for Places | 0 | - | 4.62 | 58,064 |
| Byzantine History | 0 | - | 4.91 | 28,707 |
| History of Spain | 0 | - | 4.29 | 21,045 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,084 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,248 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,515 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,726 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,690 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,113 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,472 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,053 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,898 |
| Prime Ministers of the UK | 0 | - | 4.96 | 436,705 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,068 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,018 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 399,152 |
| Malta Country Quiz | 0 | - | 4.81 | 30,942 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,542 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,427 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,208 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 77,739 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,598 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,120 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,266 |
| Russian Inventions | 0 | - | 4.39 | 12,920 |
| French Inventions | 0 | - | 4.08 | 13,877 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,886 |
| History of Paris | 0 | - | 4.24 | 13,629 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,836 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,773 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,082 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,069 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,137 |
| Countries Closest to Iceland | 0 | - | 4.89 | 73,165 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,959 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,669 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,147 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,185 |
| British History A-Z #1 | 0 | - | 4.45 | 46,306 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,498 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,350 |
| History of Scotland | 0 | - | 4.51 | 21,049 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,190 |
| Ye Olde Professions | 0 | - | 4.67 | 156,133 |
| Name a Valid Answer - British History | 0 | - | 4.57 | 15,112 |
| Australian Capitals | 0 | - | 4.92 | 62,660 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,861 |
| Official European Union Languages | 0 | - | 4.97 | 237,689 |
