| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,689 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,493 |
| Slavic Countries | 0 | - | 4.96 | 111,989 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,249 |
| History of Russia Quiz | 0 | - | 4.47 | 31,970 |
| Europe Map Quiz | 0 | - | 5.00 | 4,774,295 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,857 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,888 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,217 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,425 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,225 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,269 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,184 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,629 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,529 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,442 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,502 |
| Name the English Monarchs | 0 | - | 4.91 | 504,477 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,022 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,484 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,948 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,915 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,582 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,824 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,288 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,891 |
| The Only European Country ... | 0 | - | 4.91 | 217,708 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,786 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,585 |
| Name that Greek Letter | 0 | - | 4.93 | 324,325 |
| The Trojan War | 0 | - | 4.83 | 39,844 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,395 |
| History of Italy | 0 | - | 4.55 | 32,082 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,954 |
| Roman Emperors | 0 | - | 4.95 | 120,524 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,744 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,323 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,991 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,250,288 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,701 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,040 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,546 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,667 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,456 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,627 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,818 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,581 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,710 |
| Counties of England | 0 | - | 4.97 | 799,777 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,756 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,094 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,167 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,232 |
| Ancient Greek Words | 0 | - | 4.93 | 112,035 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,214 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,126 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,963 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,857 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,076 |
| Monarchies of Europe | 0 | - | 4.90 | 98,440 |
| European Countries with One Border | 0 | - | 4.97 | 183,244 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,021 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,465 |
| Geography of Russia | 0 | - | 4.57 | 21,560 |
| Russian Inventions | 0 | - | 4.39 | 12,986 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,325 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,843 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,592 |
| Romania Country Quiz | 0 | - | 4.63 | 53,948 |
| History of Austria | 0 | - | 4.70 | 17,923 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,964 |
| Geography of the French Empire | 0 | - | 4.45 | 27,168 |
| The French Revolution | 0 | - | 4.47 | 24,077 |
| History of France | 0 | - | 4.61 | 57,344 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,318 |
| States of Germany | 0 | - | 4.95 | 153,524 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,359 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,733 |
| Regions of Italy | 0 | - | 4.92 | 76,409 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,317 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,511 |
| The Vikings! | 0 | - | 4.46 | 28,375 |
| The Portuguese Empire | 0 | - | 4.58 | 12,087 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,637 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,478 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,232 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,424 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,969 |
| Geography of the British Empire | 0 | - | 4.48 | 39,769 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,771 |
| Champions League Winners | 0 | - | 4.92 | 1,010,832 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,423 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,346 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,508 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,671 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,951 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,747 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,236 |
| Russia Country Quiz | 0 | - | 4.83 | 114,780 |
| Countries That Border Russia | 0 | - | 4.98 | 463,072 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,812 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,286 |
| Departments of France | 0 | - | 4.93 | 54,604 |
| Countries Bordering France | 0 | - | 4.83 | 403,814 |
| Germany Country Quiz | 0 | - | 4.83 | 158,311 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,733 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,903 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,796 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,700 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,636 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,354 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,174 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,339 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,147 |
| England or Wales? | 0 | - | 4.94 | 45,827 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,212 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,163 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,921 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,678 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,820 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,465 |
| Lithuania Country Quiz | 0 | - | 4.61 | 31,696 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,113 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,114 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,968 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,865 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,944 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,461 |
| History of The Netherlands | 0 | - | 4.46 | 17,499 |
| Medieval English History | 0 | - | 4.53 | 43,590 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,711,631 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,352 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,283 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,222 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,556 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,685 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,519 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,817 |
| Countries that Border Poland | 0 | - | 4.99 | 172,696 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,329 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,757 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,782 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,973 |
| Montenegro Country Quiz | 0 | - | 4.61 | 23,784 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,406 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,731 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,905 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,716 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,992 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,311 |
| French History Multiple Choice | 0 | - | 4.55 | 33,145 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,517 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,590 |
| History of Germany | 0 | - | 4.39 | 52,912 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,993 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,741 |
| Counties of Ireland | 0 | - | 4.92 | 196,291 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,060 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,457 |
| Ancient Roman Trivia #2 | 0 | - | 4.59 | 41,566 |
| Geography of the Roman Empire | 0 | - | 4.56 | 52,047 |
| Roman Names for Places | 0 | - | 4.62 | 58,482 |
| Byzantine History | 0 | - | 4.91 | 28,939 |
| Byzantine Emperors | 0 | - | 4.92 | 14,412 |
| History of Spain | 0 | - | 4.23 | 21,130 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,247 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,496 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,474 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,793 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,865 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,194 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,816 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,232 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,017 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,600 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,850 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,059 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 403,152 |
| Malta Country Quiz | 0 | - | 4.81 | 31,135 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,457 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,445 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,965 |
| Russian History A-Z | 0 | - | 4.35 | 31,914 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,151 |
| Estonia Country Quiz | 0 | - | 4.60 | 31,156 |
| French Inventions | 0 | - | 4.10 | 13,911 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,429 |
| History of Paris | 0 | - | 4.24 | 13,665 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,828 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,268 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,184 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,135 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,704 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,798 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,583 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,128 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,805 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,309 |
| British History A-Z #1 | 0 | - | 4.45 | 46,611 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,878 |
