| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,187 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,093 |
| Slavic Countries | 0 | - | 4.96 | 110,798 |
| History of Russia Quiz | 0 | - | 4.49 | 31,781 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,798 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,833 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,338 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,295 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,032 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,947 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,744 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,130 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,497 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,112 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,809 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,009 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,966 |
| Name the English Monarchs | 0 | - | 4.92 | 497,584 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,348 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,640 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,589 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,522 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,822 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,152 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,413 |
| The Only European Country ... | 0 | - | 4.91 | 213,609 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,392 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,452 |
| Name that Greek Letter | 0 | - | 4.94 | 321,492 |
| The Trojan War | 0 | - | 4.83 | 39,403 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,429 |
| History of Italy | 0 | - | 4.55 | 31,805 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,006 |
| Roman Emperors | 0 | - | 4.95 | 118,356 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,470 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,966 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,368 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,225,065 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,017 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,629 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,231 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,152 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,427 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,653 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,676 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,859 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,140 |
| Counties of England | 0 | - | 4.97 | 788,641 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,445 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,781 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,523 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,326 |
| Ancient Greek Words | 0 | - | 4.92 | 110,607 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,285 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 94,987 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,270 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,735 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,721 |
| Monarchies of Europe | 0 | - | 4.90 | 97,249 |
| European Countries with One Border | 0 | - | 4.97 | 181,514 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,137 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,161 |
| Geography of Russia | 0 | - | 4.57 | 21,419 |
| Russian Inventions | 0 | - | 4.39 | 12,888 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,828 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,281 |
| Hungary Country Quiz | 0 | - | 4.49 | 42,996 |
| Romania Country Quiz | 0 | - | 4.63 | 53,316 |
| History of Austria | 0 | - | 4.70 | 17,742 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,040 |
| Geography of the French Empire | 0 | - | 4.48 | 26,920 |
| The French Revolution | 0 | - | 4.46 | 23,758 |
| History of France | 0 | - | 4.59 | 55,937 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,599 |
| States of Germany | 0 | - | 4.96 | 149,884 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,376 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,963 |
| Regions of Italy | 0 | - | 4.92 | 74,623 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,577 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,764 |
| The Vikings! | 0 | - | 4.45 | 28,237 |
| The Portuguese Empire | 0 | - | 4.54 | 11,984 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,193 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,076 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,865 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,158 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,726 |
| Geography of the British Empire | 0 | - | 4.48 | 39,465 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,397 |
| Champions League Winners | 0 | - | 4.92 | 995,540 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,760 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,190 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,062 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,328 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,045 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,996 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,450 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,110 |
| Russia Country Quiz | 0 | - | 4.85 | 113,589 |
| Countries That Border Russia | 0 | - | 4.98 | 458,681 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,105 |
| Departments of France | 0 | - | 4.93 | 52,717 |
| Countries Bordering France | 0 | - | 4.85 | 397,850 |
| Germany Country Quiz | 0 | - | 4.82 | 156,451 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,078 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,834 |
| Italy Country Quiz | 0 | - | 4.82 | 122,119 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,302 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,010 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,349 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,265 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,902 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,553 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,164 |
| England or Wales? | 0 | - | 4.94 | 45,289 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,360 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,138 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,596 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,891 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,744 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,752 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,751 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,761 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,768 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,921 |
| History of The Netherlands | 0 | - | 4.46 | 17,303 |
| Medieval English History | 0 | - | 4.53 | 43,299 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,650,489 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,166 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,084 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,765 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,796 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,763 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,903 |
| Slovenia Country Quiz | 0 | - | 4.52 | 30,451 |
| Countries that Border Poland | 0 | - | 4.99 | 171,264 |
| Embarrassing Chapters in Russian History | 0 | - | 3.73 | 20,228 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,266 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,410 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,647 |
| Montenegro Country Quiz | 0 | - | 4.60 | 23,518 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,207 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,677 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,499 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,363 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,708 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,491 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,772 |
| French History Multiple Choice | 0 | - | 4.55 | 32,860 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,126 |
| History of Germany | 0 | - | 4.39 | 52,597 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,829 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,412 |
| Counties of Ireland | 0 | - | 4.92 | 192,887 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,400 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,205 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,521 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,649 |
| Roman Names for Places | 0 | - | 4.62 | 57,844 |
| Byzantine History | 0 | - | 4.91 | 28,597 |
| History of Spain | 0 | - | 4.29 | 20,993 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,006 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,184 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,497 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,685 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,068 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,266 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,944 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,820 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,316 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,652 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,723 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 396,866 |
| Malta Country Quiz | 0 | - | 4.81 | 30,801 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,396 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,904 |
| European Cities Beginning with B - Click Map | 0 | - | 4.75 | 77,290 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,051 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,180 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,819 |
| Lithuania Country Quiz | 0 | - | 4.60 | 31,340 |
| Estonia Country Quiz | 0 | - | 4.60 | 30,837 |
| French Inventions | 0 | - | 4.08 | 13,862 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,560 |
| History of Paris | 0 | - | 4.24 | 13,612 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,294 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,422 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,978 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,034 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,826 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,781 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,617 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,424 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,787 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,104 |
| British History A-Z #1 | 0 | - | 4.45 | 45,775 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,291 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,054 |
| History of Scotland | 0 | - | 4.51 | 20,994 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 276,999 |
