| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,386 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,309 |
| Slavic Countries | 0 | - | 4.96 | 110,964 |
| History of Russia Quiz | 0 | - | 4.49 | 31,804 |
| Europe Map Quiz | 0 | - | 5.00 | 4,735,182 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,091 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,547 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,576 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,223 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,128 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,285 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,595 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,192 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,593 |
| Name the English Monarchs | 0 | - | 4.92 | 498,589 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,501 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,458 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,195 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,603 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,270 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,593 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,764 |
| The Only European Country ... | 0 | - | 4.91 | 214,173 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,780 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,738 |
| Name that Greek Letter | 0 | - | 4.94 | 321,893 |
| The Trojan War | 0 | - | 4.83 | 39,471 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,728 |
| History of Italy | 0 | - | 4.55 | 31,847 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,119 |
| Roman Emperors | 0 | - | 4.95 | 118,635 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,501 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,010 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,597 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 67,553 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,228,925 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,937 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,822 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,411 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,622 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,567 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,130 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,405 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,531 |
| Counties of England | 0 | - | 4.97 | 790,103 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,618 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,957 |
| Ancient Greek Words | 0 | - | 4.92 | 110,815 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 42,644 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,447 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,117 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,534 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,036 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,913 |
| Monarchies of Europe | 0 | - | 4.90 | 97,425 |
| European Countries with One Border | 0 | - | 4.97 | 181,764 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,658 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,400 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,410 |
| Geography of Russia | 0 | - | 4.57 | 21,441 |
| History of Austria | 0 | - | 4.70 | 17,768 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,357 |
| Geography of the French Empire | 0 | - | 4.45 | 26,953 |
| The French Revolution | 0 | - | 4.46 | 23,807 |
| History of France | 0 | - | 4.59 | 56,229 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,859 |
| States of Germany | 0 | - | 4.96 | 150,383 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,399 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,128 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,685 |
| Regions of Italy | 0 | - | 4.92 | 74,867 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,670 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,918 |
| The Vikings! | 0 | - | 4.46 | 28,255 |
| The Portuguese Empire | 0 | - | 4.54 | 12,002 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,520 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,423 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,124 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,218 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,906 |
| Geography of the British Empire | 0 | - | 4.48 | 39,517 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,563 |
| Champions League Winners | 0 | - | 4.92 | 997,557 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,026 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,338 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,205 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,828 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,462 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,387 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,260 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,401 |
| Russia Country Quiz | 0 | - | 4.85 | 113,755 |
| Countries That Border Russia | 0 | - | 4.98 | 459,460 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,933 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,091 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,360 |
| Departments of France | 0 | - | 4.93 | 52,960 |
| Countries Bordering France | 0 | - | 4.83 | 400,086 |
| Germany Country Quiz | 0 | - | 4.82 | 156,745 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,294 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,329 |
| Italy Country Quiz | 0 | - | 4.82 | 122,352 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,537 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,210 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,393 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,023 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,172 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,762 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,491 |
| England or Wales? | 0 | - | 4.94 | 45,380 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,691 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,688 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,609 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,271 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,834 |
| Slavic Languages | 0 | - | 4.67 | 54,033 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,805 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,793 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,217 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,025 |
| History of The Netherlands | 0 | - | 4.46 | 17,332 |
| Medieval English History | 0 | - | 4.53 | 43,340 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,660,174 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,408 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,104 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,826 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 137,920 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,908 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,090 |
| Random Point on Land to European Country | 0 | - | 4.93 | 76,212 |
| Countries that Border Poland | 0 | - | 4.99 | 171,478 |
| Embarrassing Chapters in Russian History | 0 | - | 3.73 | 20,244 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,432 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,793 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,766 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,661 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,577 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,844 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,546 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,445 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,854 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,583 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,858 |
| French History Multiple Choice | 0 | - | 4.55 | 32,895 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,614 |
| History of Germany | 0 | - | 4.39 | 52,649 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,990 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,472 |
| Counties of Ireland | 0 | - | 4.92 | 193,300 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,509 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,466 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,566 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,719 |
| Roman Names for Places | 0 | - | 4.62 | 57,925 |
| Byzantine History | 0 | - | 4.91 | 28,653 |
| History of Spain | 0 | - | 4.29 | 21,016 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,048 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,516 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,882 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,699 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,634 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,084 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,352 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,983 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,854 |
| Prime Ministers of the UK | 0 | - | 4.96 | 435,140 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,836 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,845 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 397,712 |
| Malta Country Quiz | 0 | - | 4.81 | 30,869 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,709 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 54,017 |
| European Cities Beginning with B - Click Map | 0 | - | 4.75 | 77,477 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,255 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,953 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,592 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,997 |
| Russian Inventions | 0 | - | 4.39 | 12,896 |
| French Inventions | 0 | - | 4.08 | 13,866 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,667 |
| History of Paris | 0 | - | 4.24 | 13,622 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,504 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,543 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,012 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,052 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,955 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,930 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,754 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,529 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,921 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,136 |
| British History A-Z #1 | 0 | - | 4.45 | 46,149 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,377 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,192 |
| History of Scotland | 0 | - | 4.51 | 21,014 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,294 |
| Name a Valid Answer - British History | 0 | - | 4.57 | 15,084 |
| Australian Capitals | 0 | - | 4.92 | 62,604 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,669 |
| Official European Union Languages | 0 | - | 4.97 | 237,131 |
