| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,305 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,867 |
| Slavic Countries | 0 | - | 4.96 | 112,465 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,499 |
| History of Russia Quiz | 0 | - | 4.47 | 32,012 |
| Europe Map Quiz | 0 | - | 5.00 | 4,791,368 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,494 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,822 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,929 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,960 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,678 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,800 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,538 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,786 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,803 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,617 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,209 |
| Name the English Monarchs | 0 | - | 4.91 | 507,086 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,326 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,059 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,077 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,048 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,080 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,458 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,386 |
| The Only European Country ... | 0 | - | 4.91 | 219,392 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,733 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,569 |
| Name that Greek Letter | 0 | - | 4.93 | 325,158 |
| The Trojan War | 0 | - | 4.83 | 40,031 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,096 |
| History of Italy | 0 | - | 4.55 | 32,169 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,650 |
| Roman Emperors | 0 | - | 4.95 | 121,353 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,839 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,456 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,123 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,260,175 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,682 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,711 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,457 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,104 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,867 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,014 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,264 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,864 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,754 |
| Counties of England | 0 | - | 4.97 | 803,768 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,287 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,212 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,376 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,168 |
| Ancient Greek Words | 0 | - | 4.93 | 112,597 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,065 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,938 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,661 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,740 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,569 |
| Monarchies of Europe | 0 | - | 4.90 | 98,987 |
| European Countries with One Border | 0 | - | 4.97 | 183,948 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,664 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,026 |
| Geography of Russia | 0 | - | 4.57 | 21,614 |
| Russian Inventions | 0 | - | 4.39 | 13,024 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,493 |
| Ukraine Country Quiz | 0 | - | 4.43 | 48,025 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,813 |
| Romania Country Quiz | 0 | - | 4.63 | 54,177 |
| History of Austria | 0 | - | 4.70 | 17,987 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,758 |
| Geography of the French Empire | 0 | - | 4.45 | 27,225 |
| The French Revolution | 0 | - | 4.47 | 24,158 |
| History of France | 0 | - | 4.61 | 57,686 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,924 |
| States of Germany | 0 | - | 4.95 | 154,781 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,569 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,763 |
| Regions of Italy | 0 | - | 4.92 | 77,199 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,569 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,864 |
| The Vikings! | 0 | - | 4.46 | 28,419 |
| The Portuguese Empire | 0 | - | 4.58 | 12,116 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,485 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,848 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,585 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,481 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,332 |
| Geography of the British Empire | 0 | - | 4.48 | 39,862 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,850 |
| Champions League Winners | 0 | - | 4.92 | 1,017,262 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,008 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,899 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,153 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,196 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,122 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,086 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,032 |
| Russia Country Quiz | 0 | - | 4.83 | 115,393 |
| Countries That Border Russia | 0 | - | 4.98 | 464,740 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,974 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,920 |
| Departments of France | 0 | - | 4.93 | 55,310 |
| Countries Bordering France | 0 | - | 4.83 | 405,185 |
| Germany Country Quiz | 0 | - | 4.82 | 158,975 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,168 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,092 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,349 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,154 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,762 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,132 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,565 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,979 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,960 |
| England or Wales? | 0 | - | 4.94 | 45,999 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,348 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,640 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,832 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,732 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 123,367 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,736 |
| Lithuania Country Quiz | 0 | - | 4.63 | 31,819 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,231 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,265 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,063 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,996 |
| Figures from Greek Mythology | 0 | - | 4.91 | 189,075 |
| Countries Italy Declared War On | 0 | - | 4.74 | 47,530 |
| History of The Netherlands | 0 | - | 4.46 | 17,565 |
| Medieval English History | 0 | - | 4.53 | 43,673 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,729,189 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,916 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,385 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,788 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,013 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,204 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,941 |
| Countries that Border Poland | 0 | - | 4.99 | 173,279 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,368 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 103,102 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,893 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 31,096 |
| Montenegro Country Quiz | 0 | - | 4.61 | 23,889 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,482 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,165 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,119 |
| Countries Bordering Austria | 0 | - | 4.97 | 119,003 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,198 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,538 |
| French History Multiple Choice | 0 | - | 4.55 | 33,259 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,940 |
| History of Germany | 0 | - | 4.39 | 52,991 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,395 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,877 |
| Counties of Ireland | 0 | - | 4.92 | 197,540 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,326 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,546 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,345 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,247 |
| Roman Names for Places | 0 | - | 4.62 | 58,757 |
| Byzantine History | 0 | - | 4.91 | 29,035 |
| Byzantine Emperors | 0 | - | 4.93 | 14,639 |
| History of Spain | 0 | - | 4.23 | 21,171 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,326 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,284 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,551 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,832 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,991 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,248 |
| Houses of British Monarchs | 0 | - | 4.54 | 65,998 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,342 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,100 |
| Prime Ministers of the UK | 0 | - | 4.95 | 442,866 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,110 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,366 |
| 2026–2027 Football League Teams | 0 | - | 4.94 | 407,656 |
| Malta Country Quiz | 0 | - | 4.81 | 31,250 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.75 | 12,354 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,864 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,952 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,187 |
| Russian History A-Z | 0 | - | 4.35 | 32,274 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,702 |
| Estonia Country Quiz | 0 | - | 4.60 | 31,298 |
| French Inventions | 0 | - | 4.10 | 13,930 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,755 |
| History of Paris | 0 | - | 4.24 | 13,684 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,430 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,612 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,251 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,172 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,246 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,234 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,947 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,402 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,157 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,394 |
| British History A-Z #1 | 0 | - | 4.45 | 47,298 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 61,131 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,115 |
| History of Scotland | 0 | - | 4.51 | 21,181 |
