| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,421 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,327 |
| Slavic Countries | 0 | - | 4.96 | 110,992 |
| History of Russia Quiz | 0 | - | 4.49 | 31,806 |
| Europe Map Quiz | 0 | - | 5.00 | 4,736,112 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,117 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,570 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,602 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,249 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,153 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,489 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,306 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,609 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,199 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,943 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,094 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,642 |
| Name the English Monarchs | 0 | - | 4.92 | 498,734 |
| Countries that Border Poland | 0 | - | 4.99 | 171,506 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,445 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,777 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,668 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,587 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,326 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,641 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,819 |
| The Only European Country ... | 0 | - | 4.91 | 214,278 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,819 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,884 |
| Name that Greek Letter | 0 | - | 4.94 | 321,948 |
| The Trojan War | 0 | - | 4.83 | 39,477 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,757 |
| History of Italy | 0 | - | 4.55 | 31,854 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,128 |
| Roman Emperors | 0 | - | 4.95 | 118,668 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,504 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,012 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,617 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,229,336 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,142 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,847 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,437 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,693 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,581 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,191 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,548 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,979 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,574 |
| Counties of England | 0 | - | 4.97 | 790,316 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,779 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,835 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,640 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,087 |
| Ancient Greek Words | 0 | - | 4.92 | 110,842 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,468 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,141 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,562 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,077 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,937 |
| Monarchies of Europe | 0 | - | 4.90 | 97,459 |
| European Countries with One Border | 0 | - | 4.97 | 181,786 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,684 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,426 |
| Geography of Russia | 0 | - | 4.57 | 21,445 |
| Russian Inventions | 0 | - | 4.39 | 12,901 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,923 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,388 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,100 |
| Romania Country Quiz | 0 | - | 4.63 | 53,441 |
| History of Austria | 0 | - | 4.70 | 17,773 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,387 |
| Geography of the French Empire | 0 | - | 4.45 | 26,960 |
| The French Revolution | 0 | - | 4.46 | 23,814 |
| History of France | 0 | - | 4.59 | 56,270 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,882 |
| States of Germany | 0 | - | 4.96 | 150,435 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,400 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,139 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,741 |
| Regions of Italy | 0 | - | 4.92 | 74,890 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,686 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,938 |
| The Vikings! | 0 | - | 4.46 | 28,260 |
| The Portuguese Empire | 0 | - | 4.54 | 12,004 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,584 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,457 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,148 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,223 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,926 |
| Geography of the British Empire | 0 | - | 4.48 | 39,524 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,569 |
| Champions League Winners | 0 | - | 4.92 | 997,782 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,051 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,360 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,233 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,896 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,520 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,439 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,375 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,443 |
| Russia Country Quiz | 0 | - | 4.85 | 113,777 |
| Countries That Border Russia | 0 | - | 4.98 | 459,531 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,387 |
| Departments of France | 0 | - | 4.93 | 52,988 |
| Countries Bordering France | 0 | - | 4.83 | 400,205 |
| Germany Country Quiz | 0 | - | 4.82 | 156,775 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,314 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,385 |
| Italy Country Quiz | 0 | - | 4.82 | 122,387 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,561 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,241 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,400 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,148 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,196 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,786 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,517 |
| England or Wales? | 0 | - | 4.94 | 45,389 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,735 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,743 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,611 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,318 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,845 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,820 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,811 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,799 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,284 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,035 |
| History of The Netherlands | 0 | - | 4.46 | 17,337 |
| Medieval English History | 0 | - | 4.53 | 43,347 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,661,219 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,426 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,110 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,835 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 137,932 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,931 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,122 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,528 |
| Poland Country Quiz | 0 | - | 4.22 | 62,798 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,248 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,871 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,482 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,705 |
| Montenegro Country Quiz | 0 | - | 4.60 | 23,572 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,248 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,862 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,552 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,449 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,865 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,593 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,873 |
| French History Multiple Choice | 0 | - | 4.55 | 32,898 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,699 |
| History of Germany | 0 | - | 4.39 | 52,660 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,009 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,479 |
| Counties of Ireland | 0 | - | 4.92 | 193,395 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,523 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,509 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,569 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,728 |
| Roman Names for Places | 0 | - | 4.62 | 57,931 |
| Byzantine History | 0 | - | 4.91 | 28,656 |
| History of Spain | 0 | - | 4.29 | 21,017 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,051 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,832 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,942 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,701 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,636 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,086 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,367 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,984 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,858 |
| Prime Ministers of the UK | 0 | - | 4.96 | 435,284 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,861 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,858 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 397,828 |
| Malta Country Quiz | 0 | - | 4.81 | 30,873 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,733 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 54,035 |
| European Cities Beginning with B - Click Map | 0 | - | 4.75 | 77,495 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,280 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 210,052 |
| Countries that Beat Russia | 0 | - | 4.84 | 82,020 |
| Lithuania Country Quiz | 0 | - | 4.60 | 31,408 |
| Estonia Country Quiz | 0 | - | 4.60 | 30,905 |
| French Inventions | 0 | - | 4.08 | 13,867 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,689 |
| History of Paris | 0 | - | 4.24 | 13,623 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,531 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,562 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,015 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,052 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,970 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,953 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,771 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,538 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,930 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,141 |
| British History A-Z #1 | 0 | - | 4.45 | 46,169 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,398 |
