| Countries that Border Poland | 0 | - | 4.99 | 172,300 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,018 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,422 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 82,050 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,716 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,040 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,912 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,323 |
| Medieval English History | 0 | - | 4.53 | 43,514 |
| Europe Map Quiz | 0 | - | 5.00 | 4,763,809 |
| Countries That Border Russia | 0 | - | 4.98 | 461,802 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,502 |
| Russia Country Quiz | 0 | - | 4.83 | 114,510 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,356 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,352 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,279 |
| Name the English Monarchs | 0 | - | 4.91 | 502,815 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,280 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,864 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,241 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,414 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,297 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,353 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,496 |
| Geography of the British Empire | 0 | - | 4.48 | 39,677 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,826 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,881 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,814 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,003 |
| The Trojan War | 0 | - | 4.83 | 39,734 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,914 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,593 |
| Name that Greek Letter | 0 | - | 4.93 | 323,491 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,871 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,544 |
| Roman Emperors | 0 | - | 4.95 | 120,080 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,085 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,536 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,299 |
| The Only European Country ... | 0 | - | 4.91 | 216,711 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,184 |
| History of Russia Quiz | 0 | - | 4.47 | 31,921 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,414 |
| French History Multiple Choice | 0 | - | 4.55 | 33,047 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,037 |
| History of Italy | 0 | - | 4.55 | 31,979 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,664 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,241 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,870 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,219 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,244,567 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,913 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,689 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,227 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,773 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,177 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,604 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 171,960 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,310 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,217 |
| Slavic Countries | 0 | - | 4.96 | 111,688 |
| Poland Country Quiz | 0 | - | 4.20 | 63,287 |
| History of Germany | 0 | - | 4.39 | 52,825 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,947 |
| Ancient Greek Words | 0 | - | 4.93 | 111,632 |
| Counties of England | 0 | - | 4.97 | 797,041 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,750 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,154 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 356,148 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,015 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,022 |
| Russian History A-Z | 0 | - | 4.38 | 31,735 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,222 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,152 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,265 |
| History of Scotland | 0 | - | 4.51 | 21,095 |
| Champions League Winners | 0 | - | 4.92 | 1,007,036 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,877 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,569 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,366 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,780 |
| Monarchies of Europe | 0 | - | 4.90 | 98,167 |
| European Countries with One Border | 0 | - | 4.97 | 182,811 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,609 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,641 |
| Albania Country Quiz | 0 | - | 4.54 | 39,014 |
| Russian Inventions | 0 | - | 4.39 | 12,961 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,229 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,724 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,451 |
| Romania Country Quiz | 0 | - | 4.63 | 53,792 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,923 |
| Serbia Country Quiz | 0 | - | 4.44 | 35,052 |
| History of Austria | 0 | - | 4.70 | 17,863 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,469 |
| Geography of the French Empire | 0 | - | 4.45 | 27,061 |
| The French Revolution | 0 | - | 4.47 | 23,940 |
| Countries Bordering France | 0 | - | 4.83 | 402,617 |
| Kings of France Quiz | 0 | - | 4.20 | 32,751 |
| History of France | 0 | - | 4.59 | 56,996 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,857 |
| States of Germany | 0 | - | 4.96 | 152,661 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,058 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,474 |
| Regions of Italy | 0 | - | 4.92 | 75,917 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,192 |
| The Vikings! | 0 | - | 4.46 | 28,344 |
| The Portuguese Empire | 0 | - | 4.58 | 12,066 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,983 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,222 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,017 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,705 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,656 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,881 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,140 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,039 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,327 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,863 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,162 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 261,123 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,743 |
| Lithuania Country Quiz | 0 | - | 4.61 | 31,631 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,045 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,700 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,788 |
| Departments of France | 0 | - | 4.93 | 54,161 |
| Germany Country Quiz | 0 | - | 4.83 | 157,884 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,369 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,012 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,426 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,079 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,338 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,551 |
| Byzantine History | 0 | - | 4.91 | 28,869 |
| Byzantine Emperors | 0 | - | 4.92 | 14,177 |
| History of The Netherlands | 0 | - | 4.46 | 17,437 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,951 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,689 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,644 |
| Former Dominions of the British Empire | 0 | - | 4.27 | 24,190 |
| England or Wales? | 0 | - | 4.94 | 45,701 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,407 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,699,491 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,812 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,118 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,659 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,399 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,014 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,470 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,079 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,282 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,734 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,934 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,729 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,897 |
| Montenegro Country Quiz | 0 | - | 4.61 | 23,735 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,369 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,778 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,335 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,879 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,186 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,226 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,486 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,470 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,765 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,053 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,686 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,666 |
| Counties of Ireland | 0 | - | 4.92 | 195,382 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,878 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,504 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,076 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,753 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,939 |
| Roman Names for Places | 0 | - | 4.62 | 58,303 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,593 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,358 |
| History of Spain | 0 | - | 4.23 | 21,091 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,170 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,025 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,958 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,560 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,718 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,835 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,797 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,680 |
| History of London | 0 | - | 4.33 | 26,195 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,155 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,965 |
| Prime Ministers of the UK | 0 | - | 4.95 | 439,134 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,676 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,859 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 401,514 |
| Malta Country Quiz | 0 | - | 4.81 | 31,066 |
| WWII Geography | 0 | - | 4.81 | 120,385 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,453 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,649 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,190 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,114 |
| Estonia Country Quiz | 0 | - | 4.60 | 31,089 |
