| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,482 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,340 |
| Slavic Countries | 0 | - | 4.96 | 111,821 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,149 |
| History of Russia Quiz | 0 | - | 4.47 | 31,943 |
| Europe Map Quiz | 0 | - | 5.00 | 4,768,515 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,636 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,003 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,976 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,236 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,061 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,809 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,028 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,550 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,434 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,398 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,748 |
| Name the English Monarchs | 0 | - | 4.91 | 503,568 |
| Countries that Border Poland | 0 | - | 4.99 | 172,516 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,938 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,362 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,912 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,864 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,429 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,403 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,853 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,562 |
| The Only European Country ... | 0 | - | 4.91 | 217,189 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,449 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,437 |
| Name that Greek Letter | 0 | - | 4.93 | 324,070 |
| The Trojan War | 0 | - | 4.83 | 39,777 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,087 |
| History of Italy | 0 | - | 4.55 | 32,037 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,618 |
| Roman Emperors | 0 | - | 4.95 | 120,297 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,708 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,284 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,928 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,247,158 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,211 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,844 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,360 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,169 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,310 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,025 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,561 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,503 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,341 |
| Counties of England | 0 | - | 4.97 | 798,254 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 357,560 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,064 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,098 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,581 |
| Ancient Greek Words | 0 | - | 4.93 | 111,823 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,998 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,756 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,594 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,930 |
| Monarchies of Europe | 0 | - | 4.90 | 98,279 |
| European Countries with One Border | 0 | - | 4.97 | 183,027 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,797 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,829 |
| Geography of Russia | 0 | - | 4.57 | 21,550 |
| Russian Inventions | 0 | - | 4.39 | 12,974 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,265 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,778 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,514 |
| Romania Country Quiz | 0 | - | 4.63 | 53,868 |
| History of Austria | 0 | - | 4.70 | 17,891 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,707 |
| Geography of the French Empire | 0 | - | 4.45 | 27,147 |
| The French Revolution | 0 | - | 4.47 | 24,040 |
| History of France | 0 | - | 4.59 | 57,211 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,051 |
| States of Germany | 0 | - | 4.95 | 152,983 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,211 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,505 |
| Regions of Italy | 0 | - | 4.92 | 76,135 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,232 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,353 |
| The Vikings! | 0 | - | 4.46 | 28,365 |
| The Portuguese Empire | 0 | - | 4.58 | 12,080 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,238 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,341 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,097 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,388 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,611 |
| Geography of the British Empire | 0 | - | 4.48 | 39,727 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,730 |
| Champions League Winners | 0 | - | 4.91 | 1,008,951 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,018 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,252 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,172 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,730 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,210 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,464 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 261,734 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,942 |
| Russia Country Quiz | 0 | - | 4.83 | 114,632 |
| Countries That Border Russia | 0 | - | 4.98 | 462,543 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,749 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,027 |
| Departments of France | 0 | - | 4.93 | 54,359 |
| Countries Bordering France | 0 | - | 4.83 | 403,284 |
| Germany Country Quiz | 0 | - | 4.83 | 158,092 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,539 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,342 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,571 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,227 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,597 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,700 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,057 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,880 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,886 |
| England or Wales? | 0 | - | 4.94 | 45,766 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,835 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,246 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,669 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,427 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,369 |
| Lithuania Country Quiz | 0 | - | 4.61 | 31,661 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,073 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,054 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,940 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,821 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,344 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,390 |
| History of The Netherlands | 0 | - | 4.46 | 17,467 |
| Medieval English History | 0 | - | 4.53 | 43,559 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,705,572 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,993 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,253 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,166 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,477 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,578 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,283 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,768 |
| Poland Country Quiz | 0 | - | 4.20 | 63,383 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,322 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,325 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,750 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,938 |
| Montenegro Country Quiz | 0 | - | 4.61 | 23,758 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,385 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,594 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,834 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,578 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,938 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,251 |
| French History Multiple Choice | 0 | - | 4.55 | 33,104 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,497 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,166 |
| History of Germany | 0 | - | 4.39 | 52,878 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,802 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,697 |
| Counties of Ireland | 0 | - | 4.92 | 195,844 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,983 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,248 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,775 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,980 |
| Roman Names for Places | 0 | - | 4.62 | 58,375 |
| Byzantine History | 0 | - | 4.91 | 28,905 |
| Byzantine Emperors | 0 | - | 4.92 | 14,326 |
| History of Spain | 0 | - | 4.23 | 21,111 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,211 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,249 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,115 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,774 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,831 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,177 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,741 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,195 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,991 |
| Prime Ministers of the UK | 0 | - | 4.95 | 439,785 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,764 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,944 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 402,327 |
| Malta Country Quiz | 0 | - | 4.81 | 31,099 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,490 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,521 |
| European Cities Beginning with B - Click Map | 0 | - | 4.78 | 78,324 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,257 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,297 |
| Russian History A-Z | 0 | - | 4.35 | 31,817 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,996 |
| Estonia Country Quiz | 0 | - | 4.60 | 31,125 |
| French Inventions | 0 | - | 4.10 | 13,904 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,323 |
| History of Paris | 0 | - | 4.24 | 13,657 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,660 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,149 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,161 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,120 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,601 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,692 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,462 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,034 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,672 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,294 |
