| Federal Subjects of Russia | 0 | - | 4.95 | 148,060 |
| History of Russia Quiz | 0 | - | 4.47 | 31,957 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,997 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,585 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,431 |
| Slavic Countries | 0 | - | 4.96 | 111,902 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,206 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,773 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,537 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,127 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,344 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,158 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,548 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,112 |
| Europe Map Quiz | 0 | - | 5.00 | 4,771,953 |
| Countries That Border Russia | 0 | - | 4.98 | 462,880 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,590 |
| Russia Country Quiz | 0 | - | 4.83 | 114,712 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,079 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,135 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,492 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,418 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,124 |
| Geography of Russia | 0 | - | 4.57 | 21,555 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,804 |
| Name the English Monarchs | 0 | - | 4.91 | 504,061 |
| Russian Inventions | 0 | - | 4.39 | 12,981 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,443 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,928 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,888 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,000 |
| Name that Greek Letter | 0 | - | 4.93 | 324,201 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,316 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,072 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,529 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,621 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,105 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,728 |
| The Only European Country ... | 0 | - | 4.91 | 217,454 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,618 |
| The Trojan War | 0 | - | 4.83 | 39,803 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,273 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,660 |
| Roman Emperors | 0 | - | 4.95 | 120,423 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,535 |
| History of Italy | 0 | - | 4.55 | 32,059 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,723 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,300 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,961 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,248,953 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,947 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,952 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,458 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,433 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,370 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,377 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,205 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,968 |
| Ancient Greek Words | 0 | - | 4.93 | 111,927 |
| Counties of England | 0 | - | 4.97 | 799,058 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,294 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,954 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,058 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,877 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,747 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,011 |
| Monarchies of Europe | 0 | - | 4.90 | 98,366 |
| European Countries with One Border | 0 | - | 4.97 | 183,144 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,917 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 86,920 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,325 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,878 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,235 |
| States of Germany | 0 | - | 4.95 | 153,250 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,300 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,648 |
| Regions of Italy | 0 | - | 4.92 | 76,269 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,102 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,283 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,445 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,441 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,426 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,172 |
| Champions League Winners | 0 | - | 4.92 | 1,010,071 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,295 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,556 |
| Romania Country Quiz | 0 | - | 4.63 | 53,915 |
| History of Austria | 0 | - | 4.70 | 17,908 |
| Geography of the French Empire | 0 | - | 4.45 | 27,157 |
| The French Revolution | 0 | - | 4.47 | 24,066 |
| Countries Bordering France | 0 | - | 4.83 | 403,602 |
| History of France | 0 | - | 4.59 | 57,286 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,735 |
| The Vikings! | 0 | - | 4.46 | 28,370 |
| The Portuguese Empire | 0 | - | 4.58 | 12,084 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,406 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,683 |
| Geography of the British Empire | 0 | - | 4.48 | 39,737 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,757 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,370 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,276 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,966 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,410 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,673 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,239 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,071 |
| Lithuania Country Quiz | 0 | - | 4.61 | 31,683 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,092 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,784 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,197 |
| Departments of France | 0 | - | 4.93 | 54,496 |
| Germany Country Quiz | 0 | - | 4.83 | 158,199 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,651 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,081 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,949 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,843 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,757 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,679 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,625 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,427 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,620 |
| History of The Netherlands | 0 | - | 4.46 | 17,488 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,125 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,247 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,017 |
| Medieval English History | 0 | - | 4.53 | 43,576 |
| England or Wales? | 0 | - | 4.94 | 45,806 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,042 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,110 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,709,149 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,182 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,272 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,674 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,193 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,675 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,524 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,656 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,653 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,392 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,427 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,798 |
| Countries that Border Poland | 0 | - | 4.99 | 172,631 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,559 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,768 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,959 |
| Montenegro Country Quiz | 0 | - | 4.61 | 23,769 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,397 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,677 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,864 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,670 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,971 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,288 |
| French History Multiple Choice | 0 | - | 4.55 | 33,132 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,509 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,407 |
| History of Germany | 0 | - | 4.39 | 52,904 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,909 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,717 |
| Counties of Ireland | 0 | - | 4.92 | 196,093 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,029 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,373 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,793 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,995 |
| Roman Names for Places | 0 | - | 4.62 | 58,411 |
| Byzantine History | 0 | - | 4.91 | 28,920 |
| Byzantine Emperors | 0 | - | 4.92 | 14,374 |
| History of Spain | 0 | - | 4.23 | 21,119 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,223 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,390 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,313 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,784 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,849 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,187 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,783 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,211 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,004 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,157 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,809 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,022 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 402,828 |
| Malta Country Quiz | 0 | - | 4.81 | 31,117 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,412 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,369 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,660 |
| Famous Russians | 0 | - | 4.16 | 23,869 |
| Word Chain - Russia | 0 | - | 4.33 | 15,772 |
| Russian History A-Z | 0 | - | 4.35 | 31,879 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,077 |
| Estonia Country Quiz | 0 | - | 4.60 | 31,140 |
| French Inventions | 0 | - | 4.10 | 13,910 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,372 |
| History of Paris | 0 | - | 4.24 | 13,660 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,752 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,211 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,180 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,128 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,664 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,756 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,998 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,528 |
