| Federal Subjects of Russia | 0 | - | 4.95 | 146,333 |
| History of Russia Quiz | 0 | - | 4.49 | 31,878 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,708 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,984 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,711 |
| Slavic Countries | 0 | - | 4.96 | 111,479 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,870 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,866 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 76,105 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,270 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,693 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,589 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,715 |
| Europe Map Quiz | 0 | - | 5.00 | 4,755,001 |
| Countries That Border Russia | 0 | - | 4.98 | 461,061 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,386 |
| Russia Country Quiz | 0 | - | 4.85 | 114,262 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,958 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,882 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,229 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,284 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,455 |
| Geography of Russia | 0 | - | 4.57 | 21,508 |
| Name the English Monarchs | 0 | - | 4.91 | 501,391 |
| Russian Inventions | 0 | - | 4.39 | 12,939 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,082 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,795 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,734 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,007 |
| Name that Greek Letter | 0 | - | 4.93 | 323,066 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,904 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,083 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,500 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,909 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,800 |
| The Only European Country ... | 0 | - | 4.91 | 215,941 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,751 |
| The Trojan War | 0 | - | 4.83 | 39,642 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,519 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,409 |
| Roman Emperors | 0 | - | 4.95 | 119,643 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,257 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,499 |
| History of Italy | 0 | - | 4.55 | 31,935 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,609 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,159 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,789 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,239,699 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,012 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,406 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,951 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,132 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,969 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,949 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,538 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,495 |
| Ancient Greek Words | 0 | - | 4.93 | 111,333 |
| Counties of England | 0 | - | 4.97 | 794,643 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,121 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,655 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,223 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,887 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,485 |
| Monarchies of Europe | 0 | - | 4.90 | 97,933 |
| European Countries with One Border | 0 | - | 4.97 | 182,488 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,296 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,914 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,117 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,532 |
| States of Germany | 0 | - | 4.96 | 151,856 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,867 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,536 |
| Regions of Italy | 0 | - | 4.92 | 75,529 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,140 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,992 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,828 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,608 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,983 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,539 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,221 |
| Champions League Winners | 0 | - | 4.92 | 1,003,586 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,121 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,608 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,319 |
| Romania Country Quiz | 0 | - | 4.63 | 53,677 |
| History of Austria | 0 | - | 4.70 | 17,831 |
| Geography of the French Empire | 0 | - | 4.45 | 27,023 |
| The French Revolution | 0 | - | 4.46 | 23,901 |
| Countries Bordering France | 0 | - | 4.83 | 401,835 |
| History of France | 0 | - | 4.59 | 56,815 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,461 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,568 |
| The Vikings! | 0 | - | 4.46 | 28,319 |
| The Portuguese Empire | 0 | - | 4.58 | 12,046 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,304 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,287 |
| Geography of the British Empire | 0 | - | 4.48 | 39,628 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,658 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,599 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,857 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,768 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,555 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,257 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,641 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,868 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,312 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,958 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,418 |
| Departments of France | 0 | - | 4.93 | 53,755 |
| Germany Country Quiz | 0 | - | 4.82 | 157,555 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,856 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,932 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,875 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,402 |
| Italy Country Quiz | 0 | - | 4.82 | 123,168 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,102 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,802 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,244 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,513 |
| History of The Netherlands | 0 | - | 4.46 | 17,403 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,647 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,356 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,204 |
| Medieval English History | 0 | - | 4.53 | 43,455 |
| England or Wales? | 0 | - | 4.94 | 45,593 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,713 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,687,437 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,484 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,089 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,184 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,637 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,040 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,640 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,270 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,340 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,340 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,754 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,152 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,673 |
| Countries that Border Poland | 0 | - | 4.99 | 172,036 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,181 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,631 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,821 |
| Montenegro Country Quiz | 0 | - | 4.60 | 23,680 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,328 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,238 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,712 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,611 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,178 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,784 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,085 |
| French History Multiple Choice | 0 | - | 4.55 | 32,999 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,056 |
| History of Germany | 0 | - | 4.39 | 52,777 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,453 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,602 |
| Counties of Ireland | 0 | - | 4.92 | 194,603 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,745 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,681 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,691 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,852 |
| Roman Names for Places | 0 | - | 4.62 | 58,172 |
| Byzantine History | 0 | - | 4.91 | 28,751 |
| History of Spain | 0 | - | 4.23 | 21,070 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,118 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,587 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,114 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,736 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,736 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,132 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,571 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,098 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,923 |
| Prime Ministers of the UK | 0 | - | 4.95 | 437,734 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,221 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,676 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 400,216 |
| Malta Country Quiz | 0 | - | 4.81 | 30,999 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,843 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,333 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 77,945 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,835 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,072 |
| Famous Russians | 0 | - | 4.16 | 23,815 |
| Word Chain - Russia | 0 | - | 4.33 | 15,739 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,452 |
| Lithuania Country Quiz | 0 | - | 4.61 | 31,549 |
| Estonia Country Quiz | 0 | - | 4.60 | 31,036 |
| French Inventions | 0 | - | 4.08 | 13,890 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,048 |
| History of Paris | 0 | - | 4.24 | 13,637 |
| Countries that Beat Germany | 0 | - | 4.95 | 106,089 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,899 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,114 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,086 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,303 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,363 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,649 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,134 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,777 |
