| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,180 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,015 |
| Slavic Countries | 0 | - | 4.96 | 111,590 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,957 |
| History of Russia Quiz | 0 | - | 4.47 | 31,905 |
| Europe Map Quiz | 0 | - | 5.00 | 4,759,914 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,094 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 80,759 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,527 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,886 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,774 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,897 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,835 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,463 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,306 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,324 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,932 |
| Name the English Monarchs | 0 | - | 4.91 | 502,220 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,805 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,168 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,843 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,779 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,833 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,265 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,091 |
| The Only European Country ... | 0 | - | 4.91 | 216,389 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,993 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,893 |
| Name that Greek Letter | 0 | - | 4.93 | 323,310 |
| The Trojan War | 0 | - | 4.83 | 39,693 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,731 |
| History of Italy | 0 | - | 4.55 | 31,962 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,485 |
| Roman Emperors | 0 | - | 4.95 | 119,888 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,644 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,209 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,838 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,242,523 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,327,547 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,587 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,119 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,492 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,076 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,292 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,329 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,354 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,809 |
| Counties of England | 0 | - | 4.97 | 795,964 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,418 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,996 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,971 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,451 |
| Ancient Greek Words | 0 | - | 4.93 | 111,505 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,772 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,416 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,164 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,664 |
| Monarchies of Europe | 0 | - | 4.90 | 98,061 |
| European Countries with One Border | 0 | - | 4.97 | 182,677 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,485 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,164 |
| Geography of Russia | 0 | - | 4.57 | 21,522 |
| Russian Inventions | 0 | - | 4.39 | 12,949 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,186 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,679 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,404 |
| Romania Country Quiz | 0 | - | 4.63 | 53,738 |
| History of Austria | 0 | - | 4.70 | 17,854 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,303 |
| Geography of the French Empire | 0 | - | 4.45 | 27,047 |
| The French Revolution | 0 | - | 4.46 | 23,924 |
| History of France | 0 | - | 4.59 | 56,932 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,714 |
| States of Germany | 0 | - | 4.96 | 152,332 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,975 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 74,018 |
| Regions of Italy | 0 | - | 4.92 | 75,788 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,085 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,074 |
| The Vikings! | 0 | - | 4.46 | 28,337 |
| The Portuguese Empire | 0 | - | 4.58 | 12,060 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,850 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,124 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,944 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,339 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,414 |
| Geography of the British Empire | 0 | - | 4.48 | 39,655 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,686 |
| Champions League Winners | 0 | - | 4.92 | 1,005,749 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,774 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,044 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,913 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,017 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,629 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,957 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,643 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,568 |
| Russia Country Quiz | 0 | - | 4.85 | 114,405 |
| Countries That Border Russia | 0 | - | 4.98 | 461,509 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,667 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,638 |
| Departments of France | 0 | - | 4.93 | 54,011 |
| Countries Bordering France | 0 | - | 4.83 | 402,346 |
| Germany Country Quiz | 0 | - | 4.82 | 157,754 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,047 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,230 |
| Italy Country Quiz | 0 | - | 4.82 | 123,327 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,272 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,939 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,536 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,801 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,811 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,557 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,476 |
| England or Wales? | 0 | - | 4.94 | 45,656 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,178 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,243 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,651 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,811 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,223 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,015 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,970 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,902 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,765 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,299 |
| History of The Netherlands | 0 | - | 4.46 | 17,428 |
| Medieval English History | 0 | - | 4.53 | 43,496 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,694,288 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,687 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,200 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,084 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,339 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,407 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,966 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,712 |
| Countries that Border Poland | 0 | - | 4.99 | 172,200 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,297 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,615 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,687 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,867 |
| Montenegro Country Quiz | 0 | - | 4.61 | 23,714 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,353 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,347 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,751 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,275 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,841 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,144 |
| French History Multiple Choice | 0 | - | 4.55 | 33,023 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,469 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,465 |
| History of Germany | 0 | - | 4.39 | 52,801 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,597 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,643 |
| Counties of Ireland | 0 | - | 4.92 | 195,053 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,834 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,927 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,723 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,893 |
| Roman Names for Places | 0 | - | 4.62 | 58,248 |
| Byzantine History | 0 | - | 4.91 | 28,818 |
| Byzantine Emperors | 0 | - | 4.94 | 13,516 |
| History of Spain | 0 | - | 4.23 | 21,079 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,145 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,852 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,531 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,745 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,775 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,142 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,634 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,127 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,939 |
| Prime Ministers of the UK | 0 | - | 4.95 | 438,495 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,602 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,780 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 400,967 |
| Malta Country Quiz | 0 | - | 4.81 | 31,040 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,058 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,408 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,112 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,995 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,843 |
| Russian History A-Z | 0 | - | 4.38 | 31,666 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,663 |
| Lithuania Country Quiz | 0 | - | 4.61 | 31,591 |
| Estonia Country Quiz | 0 | - | 4.60 | 31,063 |
| French Inventions | 0 | - | 4.08 | 13,895 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,141 |
| History of Paris | 0 | - | 4.24 | 13,644 |
| Countries that Beat Germany | 0 | - | 4.95 | 106,302 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,988 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,129 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,097 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,426 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,518 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,273 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,887 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,478 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,253 |
| British History A-Z #1 | 0 | - | 4.45 | 46,456 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,633 |
