| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,218 |
| Europe Map Quiz | 0 | - | 5.00 | 4,772,621 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,792 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,625 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,144 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,362 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,173 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,595 |
| England or Wales? | 0 | - | 4.94 | 45,814 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,227 |
| Name the English Monarchs | 0 | - | 4.91 | 504,165 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,325 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,083 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,540 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,659 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,144 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,761 |
| The Only European Country ... | 0 | - | 4.91 | 217,519 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,652 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,136 |
| Name that Greek Letter | 0 | - | 4.93 | 324,230 |
| History of Russia Quiz | 0 | - | 4.47 | 31,957 |
| The Trojan War | 0 | - | 4.83 | 39,809 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,298 |
| History of Italy | 0 | - | 4.55 | 32,062 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,666 |
| Roman Emperors | 0 | - | 4.95 | 120,444 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,725 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,307 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,968 |
| Australia True or False | 0 | - | 4.87 | 56,965 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,249,265 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,139 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,968 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,477 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,494 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,386 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,536 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,388 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,616 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,450 |
| Slavic Countries | 0 | - | 4.96 | 111,931 |
| French History Multiple Choice | 0 | - | 4.55 | 33,134 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,490 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,570 |
| Counties of England | 0 | - | 4.97 | 799,241 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,387 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,039 |
| Ancient Greek Words | 0 | - | 4.93 | 111,945 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,702 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,731 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,983 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,073 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,898 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,768 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,029 |
| Monarchies of Europe | 0 | - | 4.90 | 98,387 |
| European Countries with One Border | 0 | - | 4.97 | 183,163 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,945 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,107 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,128 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,137 |
| History of Austria | 0 | - | 4.70 | 17,913 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,896 |
| Geography of the French Empire | 0 | - | 4.45 | 27,158 |
| The French Revolution | 0 | - | 4.47 | 24,071 |
| History of France | 0 | - | 4.61 | 57,303 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,257 |
| States of Germany | 0 | - | 4.95 | 153,319 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,310 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,673 |
| Regions of Italy | 0 | - | 4.92 | 76,307 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,291 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,463 |
| The Vikings! | 0 | - | 4.46 | 28,372 |
| The Portuguese Empire | 0 | - | 4.58 | 12,086 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,477 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,436 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,188 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,381 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,410 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,742 |
| Geography of the British Empire | 0 | - | 4.48 | 39,744 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,760 |
| Champions League Winners | 0 | - | 4.92 | 1,010,273 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,388 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,295 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,035 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,466 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,735 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,440 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,103 |
| Russia Country Quiz | 0 | - | 4.83 | 114,738 |
| Countries That Border Russia | 0 | - | 4.98 | 462,932 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,505 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,425 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,792 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,211 |
| Departments of France | 0 | - | 4.93 | 54,521 |
| Countries Bordering France | 0 | - | 4.83 | 403,662 |
| Germany Country Quiz | 0 | - | 4.83 | 158,230 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,669 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,783 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,714 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,646 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,621 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,181 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,136 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,273 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,048 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,088 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,122 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,759 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,676 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,705 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,431 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,087 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,951 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,850 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,812 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,435 |
| History of The Netherlands | 0 | - | 4.46 | 17,491 |
| Medieval English History | 0 | - | 4.53 | 43,579 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,709,927 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,288 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,276 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,199 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,533 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,660 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,427 |
| Countries that Border Poland | 0 | - | 4.99 | 172,649 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,000 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,616 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,453 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,933 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,894 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,687 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,877 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,680 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,977 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,291 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,512 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,453 |
| History of Germany | 0 | - | 4.39 | 52,906 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,925 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,720 |
| Counties of Ireland | 0 | - | 4.92 | 196,134 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,039 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,392 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,798 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,999 |
| Roman Names for Places | 0 | - | 4.62 | 58,420 |
| Byzantine History | 0 | - | 4.91 | 28,920 |
| Byzantine Emperors | 0 | - | 4.92 | 14,383 |
| History of Spain | 0 | - | 4.23 | 21,122 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,232 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,412 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,358 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,788 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,853 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,189 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,789 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,216 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,006 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,241 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,818 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,030 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 402,907 |
| Malta Country Quiz | 0 | - | 4.81 | 31,125 |
| Canada Multiple Choice Quiz | 0 | - | 4.50 | 49,447 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,423 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,382 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,787 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,783 |
| Russian History A-Z | 0 | - | 4.35 | 31,888 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,096 |
| Russian Inventions | 0 | - | 4.39 | 12,982 |
| French Inventions | 0 | - | 4.10 | 13,910 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,388 |
| History of Paris | 0 | - | 4.24 | 13,663 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,776 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,219 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,182 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,987 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,131 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,673 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,767 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,539 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,091 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,765 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,304 |
| British History A-Z #1 | 0 | - | 4.45 | 46,588 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,836 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,773 |
| History of Scotland | 0 | - | 4.51 | 21,135 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,758 |
| Japan Multiple Choice | 0 | - | 4.48 | 40,747 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,650 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,562 |
| Australian Capitals | 0 | - | 4.92 | 62,760 |
