| Federal Subjects of Russia | 0 | - | 4.94 | 145,222 |
| History of Russia Quiz | 0 | - | 4.49 | 31,839 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,551 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,715 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,510 |
| Slavic Countries | 0 | - | 4.96 | 111,224 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,735 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,503 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,834 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,932 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,473 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,350 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,130 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,517 |
| Europe Map Quiz | 0 | - | 5.00 | 4,745,065 |
| Countries That Border Russia | 0 | - | 4.98 | 460,261 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,289 |
| Russia Country Quiz | 0 | - | 4.85 | 114,020 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,895 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,735 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,078 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,187 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,490 |
| Geography of Russia | 0 | - | 4.57 | 21,476 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,489 |
| Name the English Monarchs | 0 | - | 4.92 | 499,996 |
| Russian Inventions | 0 | - | 4.39 | 12,915 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,922 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,722 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,654 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,475 |
| Name that Greek Letter | 0 | - | 4.93 | 322,495 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,632 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,817 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,873 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,165 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,265 |
| The Only European Country ... | 0 | - | 4.91 | 215,046 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,272 |
| The Trojan War | 0 | - | 4.83 | 39,554 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,131 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,269 |
| Roman Emperors | 0 | - | 4.95 | 119,205 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,031 |
| History of Italy | 0 | - | 4.55 | 31,893 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,558 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,091 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,711 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,234,195 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,267 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,118 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,679 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,353 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,744 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,251 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,366 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,307 |
| Ancient Greek Words | 0 | - | 4.93 | 111,082 |
| Counties of England | 0 | - | 4.97 | 792,327 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,392 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,607 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,332 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,891 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,465 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,220 |
| Monarchies of Europe | 0 | - | 4.90 | 97,680 |
| European Countries with One Border | 0 | - | 4.97 | 182,088 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,954 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,671 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,262 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,730 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,127 |
| States of Germany | 0 | - | 4.96 | 151,028 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,359 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,125 |
| Regions of Italy | 0 | - | 4.92 | 75,176 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,080 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,826 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,992 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,145 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,713 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,322 |
| Champions League Winners | 0 | - | 4.92 | 1,000,480 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,024 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,212 |
| Romania Country Quiz | 0 | - | 4.63 | 53,566 |
| History of Austria | 0 | - | 4.70 | 17,796 |
| Geography of the French Empire | 0 | - | 4.45 | 26,998 |
| The French Revolution | 0 | - | 4.46 | 23,857 |
| Countries Bordering France | 0 | - | 4.83 | 401,052 |
| History of France | 0 | - | 4.59 | 56,592 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,423 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,962 |
| The Vikings! | 0 | - | 4.46 | 28,283 |
| The Portuguese Empire | 0 | - | 4.58 | 12,027 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,262 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,081 |
| Geography of the British Empire | 0 | - | 4.48 | 39,580 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,614 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,292 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,611 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,463 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,704 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,680 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,042 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,607 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,865 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,880 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,679 |
| Departments of France | 0 | - | 4.93 | 53,270 |
| Germany Country Quiz | 0 | - | 4.82 | 157,142 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,530 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,865 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,837 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,800 |
| Italy Country Quiz | 0 | - | 4.82 | 122,646 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,797 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,435 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,134 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,429 |
| History of The Netherlands | 0 | - | 4.46 | 17,354 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,379 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,016 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,815 |
| Medieval English History | 0 | - | 4.53 | 43,395 |
| England or Wales? | 0 | - | 4.94 | 45,478 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,203 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,673,132 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,745 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,153 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,662 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,923 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,626 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,079 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,805 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,104 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,441 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,978 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,594 |
| Countries that Border Poland | 0 | - | 4.99 | 171,758 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,485 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,548 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,758 |
| Montenegro Country Quiz | 0 | - | 4.60 | 23,613 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,284 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,049 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,627 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,524 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,019 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,690 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,970 |
| French History Multiple Choice | 0 | - | 4.55 | 32,941 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,338 |
| History of Germany | 0 | - | 4.39 | 52,720 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,236 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,534 |
| Counties of Ireland | 0 | - | 4.92 | 193,963 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,629 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,865 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,621 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,781 |
| Roman Names for Places | 0 | - | 4.62 | 58,043 |
| Byzantine History | 0 | - | 4.91 | 28,698 |
| History of Spain | 0 | - | 4.29 | 21,043 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,081 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,194 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,434 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,724 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,681 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,110 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,460 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,038 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,892 |
| Prime Ministers of the UK | 0 | - | 4.96 | 436,521 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,031 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,995 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 398,964 |
| Malta Country Quiz | 0 | - | 4.81 | 30,925 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,344 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,180 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 77,711 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,558 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,946 |
| Famous Russians | 0 | - | 4.16 | 23,769 |
| Word Chain - Russia | 0 | - | 4.33 | 15,720 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,231 |
| Lithuania Country Quiz | 0 | - | 4.60 | 31,470 |
| Estonia Country Quiz | 0 | - | 4.60 | 30,961 |
| French Inventions | 0 | - | 4.08 | 13,875 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,859 |
| History of Paris | 0 | - | 4.24 | 13,629 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,799 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,735 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,074 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,066 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,119 |
| Countries Closest to Iceland | 0 | - | 4.89 | 73,131 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,526 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,942 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,651 |
