| States of the German Confederation in 1848 | 0 | - | 4.83 | 26,472 |
| Regions of Italy | 0 | - | 4.88 | 60,373 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.82 | 9,894 |
| Counties of England | 0 | - | 4.96 | 689,720 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 71,682 |
| Roman Emperors | 0 | - | 4.95 | 95,831 |
| Geography of the Dutch Empire | 0 | - | 4.71 | 32,424 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 74,650 |
| Invasions of Great Britain | 0 | - | 4.49 | 55,573 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 31,765 |
| Regions of Spain Quiz | 0 | - | 4.85 | 94,860 |
| Cantons of Switzerland | 0 | - | 4.96 | 40,261 |
| Parts of the United Kingdom | 0 | - | 4.88 | 83,810 |
| Europe Map Quiz | 0 | - | 5.00 | 4,290,022 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 133,602 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 62,710 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.93 | 49,177 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 58,653 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 46,378 |
| Regions of France Map Quiz | 0 | - | 4.96 | 127,331 |
| States of Germany Map Quiz | 0 | - | 4.91 | 120,150 |
| States of Germany | 0 | - | 4.93 | 123,522 |
| Germany Immigration by Country | 0 | - | 4.90 | 69,674 |
| Counties of Ireland | 0 | - | 4.89 | 159,082 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.71 | 53,816 |
| Olympian Gods Quiz | 0 | - | 4.96 | 457,103 |
| Countries Surrounding Rome | 0 | - | 4.96 | 46,596 |
| Italy Country Quiz | 0 | - | 4.81 | 108,850 |
| Regions of Italy Map Quiz | 0 | - | 4.95 | 133,621 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 48,636 |
| The Vikings! | 0 | - | 4.44 | 27,105 |
| The Portuguese Empire | 0 | - | 4.54 | 11,336 |
| English Monarchs Quiz | 0 | - | 4.91 | 446,709 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 386,036 |
| History of Austria | 0 | - | 4.68 | 16,388 |
| Geography of the French Empire | 0 | - | 4.49 | 25,405 |
| The French Revolution | 0 | - | 4.45 | 21,912 |
| History of Ireland Quiz | 0 | - | 4.44 | 18,899 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 399,305 |
| Wives of King Henry VIII | 0 | - | 4.53 | 44,628 |
| Countries the UK Declared War On | 0 | - | 4.58 | 112,249 |
| Geography of the British Empire | 0 | - | 4.50 | 37,015 |
| History of France Quiz | 0 | - | 4.55 | 39,670 |
| Countries Bordering Italy | 0 | - | 4.92 | 78,770 |
| Embarrassing Chapters in Italian History | 0 | - | 4.20 | 11,144 |
| Countries Closest to Italy | 0 | - | 4.97 | 178,922 |
| History of The Netherlands | 0 | - | 4.42 | 15,750 |
| Countries That Use the Euro | 0 | - | 4.92 | 62,862 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 335,658 |
| 10 Easternmost Countries in Europe | 0 | - | 4.85 | 92,122 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.83 | 39,033 |
| The Only European Country ... | 0 | - | 4.94 | 178,310 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 584,086 |
| Countries Italy Declared War On | 0 | - | 4.79 | 39,929 |
| The Trojan War | 0 | - | 4.81 | 35,929 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.81 | 85,344 |
| Figures from Greek Mythology | 0 | - | 4.92 | 169,382 |
| Countries that Beat Italy | 0 | - | 4.88 | 45,321 |
| Ancient Roman Trivia #2 | 0 | - | 4.55 | 35,381 |
| Geography of the Roman Empire | 0 | - | 4.55 | 48,483 |
| Roman Names for Places | 0 | - | 4.67 | 41,481 |
| Byzantine History | 0 | - | 4.87 | 26,226 |
| History of Spain Quiz | 0 | - | 4.33 | 19,566 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 24,765 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.76 | 18,986 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,043,477 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.93 | 1,183,141 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 160,438 |
| 10 Westernmost Countries in Europe | 0 | - | 4.95 | 138,335 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.94 | 185,980 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 76,917 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 285,261 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 115,723 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 74,601 |
| Eastern Europe Map Quiz | 0 | - | 4.89 | 115,640 |
| Slavic Countries | 0 | - | 4.96 | 100,425 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 22,002 |
| Germany Multiple Choice | 0 | - | 4.81 | 49,320 |
| History of Germany Quiz | 0 | - | 4.35 | 40,128 |
| Name that Greek Letter | 0 | - | 4.94 | 295,820 |
| The Life of Julius Caesar | 0 | - | 4.46 | 32,099 |
| Provinces of the Netherlands | 0 | - | 4.61 | 33,306 |
| 100 Greatest Britons Quiz | 0 | - | 4.44 | 46,012 |
| British Acronyms | 0 | - | 4.42 | 43,359 |
| Foods in a Full English Breakfast | 0 | - | 4.41 | 73,393 |
| Regions of France | 0 | - | 4.63 | 100,364 |
| France Immigration by Country | 0 | - | 4.80 | 68,917 |
| Largest Islands of Greece | 0 | - | 4.57 | 39,668 |
| Ancient Greek Words | 0 | - | 4.90 | 97,376 |
| Roman History Vocabulary | 0 | - | 4.43 | 55,092 |
| British Words Quiz #2 | 0 | - | 4.04 | 106,878 |
| Languages of the United Kingdom | 0 | - | 4.10 | 38,326 |
| Counties of England Map Quiz | 0 | - | 4.97 | 286,732 |
| British Geography Multiple Choice | 0 | - | 4.41 | 41,034 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 269,842 |
| Champions League Winners | 0 | - | 4.91 | 852,400 |
| European Diaspora - Top 11 Countries | 0 | - | 4.91 | 83,620 |
| 10 European Countries with the Most Tourists | 0 | - | 4.97 | 120,715 |
| Three Band Flags of Europe | 0 | - | 4.97 | 160,845 |
| Pixelated Europe Map | 0 | - | 4.90 | 109,377 |
| Monarchies of Europe | 0 | - | 4.88 | 86,954 |
| European Countries with One Border | 0 | - | 4.96 | 150,457 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 144,357 |
| History of Russia Quiz | 0 | - | 4.48 | 29,857 |
| Federal Subjects of Russia | 0 | - | 4.95 | 112,361 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 102,027 |
| French Inventions | 0 | - | 4.08 | 13,339 |
| History of Paris | 0 | - | 4.20 | 12,679 |
| Famous Ancient Romans | 0 | - | 4.72 | 74,313 |
| Italian Inventions | 0 | - | 3.87 | 17,949 |
| Seven Hills of Rome | 0 | - | 4.68 | 8,534 |
| Spain Cities Map Quiz | 0 | - | 4.86 | 86,195 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 169,202 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 99,944 |
| Former Dominions of the British Empire | 0 | - | 4.37 | 22,687 |
| England or Wales? | 0 | - | 4.93 | 40,219 |
| All Champions League Teams Ever | 0 | - | 4.89 | 104,379 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 93,485 |
| Top 10 Coldest European Countries | 0 | - | 4.95 | 180,706 |
| Top 10 Hottest European Countries | 0 | - | 4.87 | 115,465 |
| Category Elimination - European Geography #1 | 0 | - | 4.97 | 200,632 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 246,813 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 142,709 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 188,592 |
| Name a Valid European Country #2 | 0 | - | 4.93 | 84,209 |
| Russia Country Quiz | 0 | - | 4.84 | 103,115 |
| Countries That Border Russia | 0 | - | 4.98 | 425,802 |
| Croatia Country Quiz | 0 | - | 4.81 | 37,240 |
| France Cities Map Quiz | 0 | - | 4.95 | 147,878 |
| Countries Bordering France | 0 | - | 4.87 | 357,218 |
| Germany Country Quiz | 0 | - | 4.82 | 140,086 |
| Germany Cities Map Quiz | 0 | - | 4.84 | 105,925 |
| Countries Bordering Germany | 0 | - | 4.99 | 340,530 |
| Italy Cities Map Quiz | 0 | - | 4.96 | 127,405 |
| Canary Islands | 0 | - | 4.60 | 16,557 |
| Switzerland Immigration by Country | 0 | - | 4.79 | 20,952 |
| British Spellings Quiz | 0 | - | 4.04 | 94,649 |
| British Groups of Things | 0 | - | 4.26 | 80,126 |
| United Kingdom Decoder | 0 | - | 4.27 | 38,732 |
| Geography of Scotland | 0 | - | 4.62 | 19,569 |
| Medieval English History | 0 | - | 4.52 | 40,788 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 457,073 |
| Top 20 Football Clubs in Europe | 0 | - | 4.49 | 85,407 |
| European Countries NOT in NATO | 0 | - | 4.76 | 35,133 |
| Ancient Greek Trivia | 0 | - | 4.56 | 63,378 |
| Italian Foods | 0 | - | 4.25 | 64,161 |
| Roman History by Picture | 0 | - | 4.44 | 24,534 |
| Geography of the Spanish Empire | 0 | - | 4.48 | 35,218 |
| Countries Closest to Spain | 0 | - | 4.95 | 205,805 |
| British Words Quiz #1 | 0 | - | 3.78 | 236,096 |
| British Foods | 0 | - | 3.85 | 47,038 |
| British and American Word Differences | 0 | - | 2.66 | 44,395 |
| English Inventions #1 | 0 | - | 3.17 | 23,009 |
| English Inventions #2 | 0 | - | 3.92 | 8,168 |
| British Geography Quiz #2 | 0 | - | 4.28 | 26,325 |
| Counties of the UK and Ireland | 0 | - | 4.97 | 103,826 |
| Houses of British Monarchs | 0 | - | 4.50 | 52,057 |
| British History Multiple Choice #1 | 0 | - | 4.47 | 51,526 |
| Prime Ministers of the UK | 0 | - | 4.95 | 380,910 |
| World Capitals Closest to London | 0 | - | 4.90 | 93,371 |
| 50 Busiest Air Routes from London | 0 | - | 4.89 | 85,926 |
| Bridges of London | 0 | - | 4.11 | 9,356 |
| British Sport Trivia | 0 | - | 4.32 | 19,250 |
| 2025 Football League Teams | 0 | - | 4.94 | 344,753 |
| Famous Welsh People | 0 | - | 4.12 | 9,264 |
| Liechtenstein Country Quiz | 0 | - | 4.63 | 24,325 |
| Malta Country Quiz | 0 | - | 4.79 | 27,944 |
| San Marino Country Quiz | 0 | - | 4.65 | 25,946 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,168,039 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 158,010 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 66,118 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 128,146 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 56,316 |
| Category Elimination - European Countries #1 | 0 | - | 4.88 | 76,609 |
| Countries that Border Poland | 0 | - | 4.99 | 158,541 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.94 | 75,900 |
| Countries With the Most Russian Speakers | 0 | - | 4.95 | 56,145 |
| Countries that Border Hungary | 0 | - | 4.98 | 96,165 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.82 | 30,955 |
| Moldova Country Quiz | 0 | - | 4.86 | 27,335 |
| Countries Bordering Serbia | 0 | - | 4.95 | 83,007 |
| Andorra Country Quiz | 0 | - | 4.87 | 27,859 |
| Countries Bordering Austria | 0 | - | 4.97 | 109,981 |
| Countries that Visit France the Most | 0 | - | 4.84 | 39,884 |
| Countries Closest to Metropolitan France | 0 | - | 4.87 | 66,243 |
| Geography of Germany | 0 | - | 4.37 | 15,587 |
| Countries With the Most German Speakers | 0 | - | 4.88 | 52,027 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.55 | 55,805 |
| Ancient Greece - Multiple Choice | 0 | - | 4.53 | 38,634 |
| Roman to Greek God | 0 | - | 4.51 | 113,826 |
| Italian History A-Z | 0 | - | 4.11 | 8,856 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 71,807 |
| Greenland Country Quiz | 0 | - | 4.82 | 32,327 |
| Countries Closest to Iceland | 0 | - | 4.87 | 62,759 |
| Countries that Beat Portugal | 0 | - | 4.83 | 35,621 |
| Countries that Beat Spain | 0 | - | 4.95 | 55,813 |
| Word Chain - United Kingdom | 0 | - | 4.04 | 27,964 |
| The British Royal Family - Modern Times | 0 | - | 4.12 | 20,623 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 90,188 |
| People on Money - England | 0 | - | 4.33 | 15,934 |
