| States of the German Confederation in 1848 | 0 | - | 4.84 | 26,900 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.81 | 10,166 |
| Counties of England | 0 | - | 4.97 | 699,232 |
| Geography of the Dutch Empire | 0 | - | 4.70 | 32,602 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 75,077 |
| Invasions of Great Britain | 0 | - | 4.49 | 55,923 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 32,365 |
| Regions of Spain Quiz | 0 | - | 4.87 | 96,446 |
| Cantons of Switzerland | 0 | - | 4.97 | 41,011 |
| Countries and Territories of the United Kingdom | 0 | - | 4.88 | 84,546 |
| Europe Map Quiz | 0 | - | 5.00 | 4,331,996 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 135,142 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 63,974 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 59,745 |
| Regions of France Map Quiz | 0 | - | 4.96 | 128,615 |
| France Immigration by Country | 0 | - | 4.81 | 69,718 |
| States of Germany Map Quiz | 0 | - | 4.92 | 121,520 |
| States of Germany | 0 | - | 4.93 | 125,903 |
| Germany Immigration by Country | 0 | - | 4.90 | 70,723 |
| Counties of Ireland | 0 | - | 4.90 | 161,950 |
| Regions of Italy | 0 | - | 4.89 | 61,448 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.72 | 54,240 |
| The Portuguese Empire | 0 | - | 4.54 | 11,380 |
| English Monarchs Quiz | 0 | - | 4.91 | 451,590 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 390,307 |
| History of Austria | 0 | - | 4.69 | 16,504 |
| Geography of the French Empire | 0 | - | 4.49 | 25,545 |
| The French Revolution | 0 | - | 4.45 | 22,080 |
| History of Ireland Quiz | 0 | - | 4.44 | 19,088 |
| History of Italy | 0 | - | 4.49 | 29,954 |
| Wives of King Henry VIII | 0 | - | 4.55 | 51,140 |
| Countries the UK Declared War On | 0 | - | 4.58 | 113,316 |
| Geography of the British Empire | 0 | - | 4.51 | 37,299 |
| History of France Quiz | 0 | - | 4.55 | 39,914 |
| History of The Netherlands | 0 | - | 4.43 | 15,885 |
| Countries That Use the Euro | 0 | - | 4.93 | 65,027 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 338,438 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 94,378 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.83 | 39,227 |
| The Only European Country ... | 0 | - | 4.93 | 181,543 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 589,509 |
| Countries Closest to Iceland | 0 | - | 4.87 | 63,612 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.81 | 86,622 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 72,144 |
| Roman Emperors | 0 | - | 4.95 | 96,980 |
| History of Spain Quiz | 0 | - | 4.33 | 19,681 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 24,841 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.76 | 19,099 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,058,695 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.93 | 1,200,463 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 179,348 |
| 10 Westernmost Countries in Europe | 0 | - | 4.95 | 139,657 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.94 | 189,080 |
| European Landmarks Map Quiz | 0 | - | 4.98 | 77,823 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 287,734 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 118,227 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 75,856 |
| Eastern Europe Map Quiz | 0 | - | 4.90 | 116,528 |
| Slavic Countries | 0 | - | 4.96 | 101,256 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 22,130 |
| Germany Multiple Choice | 0 | - | 4.81 | 49,848 |
| History of Germany Quiz | 0 | - | 4.35 | 40,391 |
| Name that Greek Letter | 0 | - | 4.94 | 297,629 |
| Provinces of the Netherlands | 0 | - | 4.65 | 33,797 |
| 100 Greatest Britons Quiz | 0 | - | 4.43 | 46,178 |
| British Acronyms | 0 | - | 4.41 | 43,582 |
| Foods in a Full English Breakfast | 0 | - | 4.42 | 74,275 |
| Regions of France | 0 | - | 4.63 | 101,977 |
| Largest Islands of Greece | 0 | - | 4.58 | 40,614 |
| Olympian Gods Quiz | 0 | - | 4.96 | 459,824 |
| Ancient Greek Words | 0 | - | 4.90 | 98,654 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 49,301 |
| Sweden Immigration by Country | 0 | - | 4.66 | 42,781 |
| Languages of the United Kingdom | 0 | - | 4.10 | 38,530 |
| Counties of England Map Quiz | 0 | - | 4.97 | 288,874 |
| British Geography Multiple Choice | 0 | - | 4.41 | 41,248 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 278,093 |
| Champions League Winners | 0 | - | 4.91 | 877,671 |
| European Diaspora - Top 11 Countries | 0 | - | 4.89 | 84,848 |
| 10 European Countries with the Most Tourists | 0 | - | 4.97 | 122,574 |
| Three Band Flags of Europe | 0 | - | 4.97 | 162,683 |
| Pixelated Europe Map | 0 | - | 4.90 | 110,472 |
| Monarchies of Europe | 0 | - | 4.88 | 87,746 |
| European Countries with One Border | 0 | - | 4.96 | 151,991 |
| European Countries with the Fewest Borders | 0 | - | 4.98 | 145,647 |
| History of Russia Quiz | 0 | - | 4.48 | 30,031 |
| Federal Subjects of Russia | 0 | - | 4.95 | 115,042 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 102,770 |
| French Inventions | 0 | - | 4.08 | 13,369 |
| History of Paris | 0 | - | 4.20 | 12,767 |
| Embarrassing Chapters in Italian History | 0 | - | 4.20 | 11,235 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 402,726 |
| Spain Cities Map Quiz | 0 | - | 4.86 | 87,198 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 170,858 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 101,584 |
| Former Dominions of the British Empire | 0 | - | 4.37 | 22,818 |
| England or Wales? | 0 | - | 4.93 | 40,705 |
| All Champions League Teams Ever | 0 | - | 4.90 | 106,944 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 94,684 |
| Top 10 Coldest European Countries | 0 | - | 4.95 | 182,234 |
| Top 10 Hottest European Countries | 0 | - | 4.87 | 116,510 |
| Category Elimination - European Geography #1 | 0 | - | 4.97 | 203,566 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 249,289 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 145,055 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 191,630 |
| Name a Valid European Country #2 | 0 | - | 4.93 | 85,363 |
| Russia Country Quiz | 0 | - | 4.84 | 104,385 |
| Countries That Border Russia | 0 | - | 4.98 | 429,496 |
| Croatia Country Quiz | 0 | - | 4.81 | 37,872 |
| France Cities Map Quiz | 0 | - | 4.96 | 149,673 |
| Countries Bordering France | 0 | - | 4.87 | 360,137 |
| Germany Country Quiz | 0 | - | 4.82 | 141,796 |
| Germany Cities Map Quiz | 0 | - | 4.84 | 107,201 |
| Countries Bordering Germany | 0 | - | 4.99 | 343,114 |
| Italy Country Quiz | 0 | - | 4.81 | 110,436 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 135,266 |
| Italy Cities Map Quiz | 0 | - | 4.96 | 139,105 |
| Countries Surrounding Rome | 0 | - | 4.96 | 46,860 |
| Famous Nordic People | 0 | - | 4.41 | 10,706 |
| Canary Islands | 0 | - | 4.61 | 16,610 |
| Switzerland Immigration by Country | 0 | - | 4.76 | 22,357 |
| British Spellings Quiz | 0 | - | 4.04 | 94,947 |
| British Groups of Things | 0 | - | 4.26 | 80,613 |
| United Kingdom Decoder | 0 | - | 4.27 | 38,840 |
| Geography of Scotland | 0 | - | 4.62 | 19,743 |
| Medieval English History | 0 | - | 4.52 | 41,114 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 489,319 |
| Top 20 Football Clubs in Europe | 0 | - | 4.50 | 88,883 |
| European Countries NOT in NATO | 0 | - | 4.79 | 35,948 |
| Ancient Greek Trivia | 0 | - | 4.55 | 63,700 |
| Figures from Greek Mythology | 0 | - | 4.92 | 170,394 |
| Countries Italy Declared War On | 0 | - | 4.76 | 40,272 |
| Roman Names for Places | 0 | - | 4.66 | 41,993 |
| Byzantine History | 0 | - | 4.87 | 26,425 |
| Geography of the Spanish Empire | 0 | - | 4.48 | 35,386 |
| Countries Closest to Spain | 0 | - | 4.95 | 207,648 |
| British Words Quiz #1 | 0 | - | 3.77 | 236,592 |
| British Words Quiz #2 | 0 | - | 4.00 | 107,198 |
| British Foods | 0 | - | 3.85 | 47,143 |
| British and American Word Differences | 0 | - | 2.66 | 44,477 |
| English Inventions #1 | 0 | - | 3.17 | 23,032 |
| English Inventions #2 | 0 | - | 3.92 | 8,195 |
| British Geography Quiz #2 | 0 | - | 4.28 | 26,445 |
| Counties of the UK and Ireland | 0 | - | 4.97 | 106,551 |
| Houses of British Monarchs | 0 | - | 4.50 | 52,587 |
| British History Multiple Choice #1 | 0 | - | 4.47 | 51,880 |
| Prime Ministers of the UK | 0 | - | 4.95 | 384,981 |
| World Capitals Closest to London | 0 | - | 4.91 | 94,199 |
| 50 Busiest Air Routes from London | 0 | - | 4.88 | 87,142 |
| Bridges of London | 0 | - | 4.14 | 9,418 |
| British Sport Trivia | 0 | - | 4.29 | 19,354 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 352,780 |
| Famous Welsh People | 0 | - | 4.15 | 9,311 |
| Liechtenstein Country Quiz | 0 | - | 4.65 | 24,628 |
| Malta Country Quiz | 0 | - | 4.79 | 28,272 |
| San Marino Country Quiz | 0 | - | 4.65 | 26,271 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,205,753 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 159,329 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 66,544 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 129,232 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 57,082 |
| Category Elimination - European Countries #1 | 0 | - | 4.88 | 77,623 |
| Countries that Border Poland | 0 | - | 4.99 | 159,839 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.92 | 76,546 |
| Countries With the Most Russian Speakers | 0 | - | 4.95 | 57,148 |
| Countries that Border Hungary | 0 | - | 4.98 | 97,112 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.81 | 31,327 |
| Moldova Country Quiz | 0 | - | 4.86 | 27,637 |
| Countries Bordering Serbia | 0 | - | 4.95 | 83,931 |
| Andorra Country Quiz | 0 | - | 4.87 | 28,242 |
| Countries Bordering Austria | 0 | - | 4.97 | 110,801 |
| Countries that Visit France the Most | 0 | - | 4.81 | 40,317 |
| Countries Closest to Metropolitan France | 0 | - | 4.87 | 66,742 |
| Geography of Germany | 0 | - | 4.37 | 15,730 |
| Countries With the Most German Speakers | 0 | - | 4.88 | 53,051 |
| The Trojan War | 0 | - | 4.80 | 36,216 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.55 | 56,588 |
| Ancient Greece - Multiple Choice | 0 | - | 4.53 | 38,941 |
| Italian Inventions | 0 | - | 3.87 | 17,978 |
| Countries Bordering Italy | 0 | - | 4.95 | 95,318 |
| Countries Closest to Italy | 0 | - | 4.97 | 181,006 |
| Ancient Roman Trivia #2 | 0 | - | 4.55 | 35,600 |
| Geography of the Roman Empire | 0 | - | 4.57 | 48,786 |
| Greenland Country Quiz | 0 | - | 4.81 | 32,719 |
| Countries that Beat Portugal | 0 | - | 4.84 | 36,146 |
| Countries that Beat Spain | 0 | - | 4.95 | 56,339 |
| Word Chain - United Kingdom | 0 | - | 4.04 | 28,123 |
| The British Royal Family - Modern Times | 0 | - | 4.12 | 20,713 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 90,977 |
| People on Money - England | 0 | - | 4.34 | 15,997 |
| Name a Valid English City | 0 | - | 4.16 | 15,434 |
| British History A-Z | 0 | - | 4.47 | 39,892 |
| English First Names of the Middle Ages | 0 | - | 4.41 | 45,780 |
| British History Quiz for Dummies | 0 | - | 4.54 | 62,184 |
| History of Scotland | 0 | - | 4.49 | 19,764 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 257,566 |
| African Countries by First 2 Letters | 0 | - | 4.95 | 247,355 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 48,844 |
| Europe Map Quiz - "B" Cities | 0 | - | 4.69 | 45,471 |
| Top European Languages on a Map | 0 | - | 4.76 | 119,408 |
