| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,925 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,639 |
| Slavic Countries | 0 | - | 4.96 | 112,174 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,338 |
| History of Russia Quiz | 0 | - | 4.47 | 31,985 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,468 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,076 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,656 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,478 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,615 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,373 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,319 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,689 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,155 |
| Name the English Monarchs | 0 | - | 4.91 | 505,352 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,148 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,504 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,256 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,712 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,260 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,702 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,720 |
| The Only European Country ... | 0 | - | 4.91 | 218,324 |
| European Countries NOT in NATO | 0 | - | 4.90 | 62,135 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,647 |
| Name that Greek Letter | 0 | - | 4.93 | 324,653 |
| The Trojan War | 0 | - | 4.83 | 39,930 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,665 |
| History of Italy | 0 | - | 4.55 | 32,107 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,476 |
| Roman Emperors | 0 | - | 4.95 | 120,872 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,781 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,378 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,039 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 68,828 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,653 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,586 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,278 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,828 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,194 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,607 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,157 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 174,907 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,117 |
| Counties of England | 0 | - | 4.97 | 801,211 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,034 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,944 |
| Ancient Greek Words | 0 | - | 4.93 | 112,225 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,554 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,314 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,228 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,191 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,276 |
| Monarchies of Europe | 0 | - | 4.90 | 98,635 |
| European Countries with One Border | 0 | - | 4.97 | 183,500 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,240 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,256 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,895 |
| Geography of Russia | 0 | - | 4.57 | 21,574 |
| History of Austria | 0 | - | 4.70 | 17,950 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,345 |
| Geography of the French Empire | 0 | - | 4.45 | 27,193 |
| The French Revolution | 0 | - | 4.47 | 24,108 |
| History of France | 0 | - | 4.61 | 57,461 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,517 |
| States of Germany | 0 | - | 4.95 | 153,976 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,540 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,523 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,968 |
| Regions of Italy | 0 | - | 4.92 | 76,674 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,410 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,645 |
| The Vikings! | 0 | - | 4.46 | 28,390 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,993 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,602 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,372 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,435 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,111 |
| Geography of the British Empire | 0 | - | 4.48 | 39,813 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,805 |
| Champions League Winners | 0 | - | 4.92 | 1,013,048 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,598 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,549 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,119 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,415 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,415 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,690 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,593 |
| Russia Country Quiz | 0 | - | 4.83 | 115,135 |
| Countries That Border Russia | 0 | - | 4.98 | 463,888 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,616 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,503 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,872 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,509 |
| Departments of France | 0 | - | 4.93 | 54,851 |
| Countries Bordering France | 0 | - | 4.83 | 404,340 |
| Germany Country Quiz | 0 | - | 4.83 | 158,559 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,893 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,313 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,011 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,870 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,698 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,022 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,316 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,578 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,460 |
| England or Wales? | 0 | - | 4.94 | 45,891 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,621 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,330 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,692 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,699 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,257 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,557 |
| Slavic Languages | 0 | - | 4.68 | 54,609 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,171 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,001 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,919 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,347 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,557 |
| History of The Netherlands | 0 | - | 4.46 | 17,527 |
| Medieval English History | 0 | - | 4.53 | 43,618 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,307 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,718,557 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,566 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,286 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,626 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,776 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,789 |
| Countries that Border Poland | 0 | - | 4.99 | 172,934 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,347 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,130 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,260 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,888 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,990 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,969 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,907 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,007 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,832 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,068 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,386 |
| French History Multiple Choice | 0 | - | 4.55 | 33,177 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,069 |
| History of Germany | 0 | - | 4.39 | 52,944 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,141 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,784 |
| Counties of Ireland | 0 | - | 4.92 | 196,825 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,159 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,046 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 44,049 |
| Geography of the Roman Empire | 0 | - | 4.56 | 52,153 |
| Roman Names for Places | 0 | - | 4.62 | 58,606 |
| Byzantine History | 0 | - | 4.91 | 28,987 |
| Byzantine Emperors | 0 | - | 4.92 | 14,498 |
| History of Spain | 0 | - | 4.23 | 21,145 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,282 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,789 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,910 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,808 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,906 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,212 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,873 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,270 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,051 |
| Prime Ministers of the UK | 0 | - | 4.95 | 441,342 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,952 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,174 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 403,857 |
| Malta Country Quiz | 0 | - | 4.81 | 31,198 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,604 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,627 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,887 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,831 |
| Russian History A-Z | 0 | - | 4.35 | 32,095 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,379 |
| Russian Inventions | 0 | - | 4.39 | 13,004 |
| French Inventions | 0 | - | 4.10 | 13,918 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,572 |
| History of Paris | 0 | - | 4.24 | 13,667 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,089 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,431 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,210 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,145 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,021 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,950 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,722 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,222 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,924 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,341 |
| British History A-Z #1 | 0 | - | 4.45 | 47,056 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,991 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,921 |
| History of Scotland | 0 | - | 4.51 | 21,150 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,285 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,026 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,662 |
| Australian Capitals | 0 | - | 4.92 | 62,804 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,569 |
| Official European Union Languages | 0 | - | 4.97 | 239,419 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,437 |
