| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,910 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,030 |
| States of Germany | 0 | - | 4.96 | 152,102 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,928 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,543 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,737 |
| Departments of France | 0 | - | 4.93 | 53,908 |
| Germany Country Quiz | 0 | - | 4.82 | 157,666 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,528 |
| England or Wales? | 0 | - | 4.94 | 45,624 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,035 |
| Official European Union Languages | 0 | - | 4.97 | 238,238 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,687 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,688 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,734 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,222 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,269 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,557 |
| Countries that Beat Germany | 0 | - | 4.95 | 106,171 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,940 |
| The Trojan War | 0 | - | 4.83 | 39,668 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,621 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,444 |
| Roman Emperors | 0 | - | 4.95 | 119,730 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,917 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,777 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,287 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,103 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 170,918 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,618 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,306 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,709 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,831 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,519 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,906 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,369 |
| Celtic Nations | 0 | - | 4.69 | 46,915 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,137 |
| Champions League Winners | 0 | - | 4.92 | 1,004,775 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,974 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,075 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,786 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,587 |
| Austria Country Quiz | 0 | - | 4.57 | 59,667 |
| Countries Bordering France | 0 | - | 4.83 | 402,066 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,615 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,465 |
| Regions of Italy | 0 | - | 4.92 | 75,665 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,990 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,066 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,731 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,090 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,601 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,667 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,425 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,789 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,456 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,821 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,638 |
| Austria... or Australia? | 0 | - | 4.68 | 104,257 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,541 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,766 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,961 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,952 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,886 |
| Italy Country Quiz | 0 | - | 4.82 | 123,267 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,183 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,861 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,271 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,725 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,455 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,803 |
| UK Immigration by Country | 0 | - | 4.94 | 140,741 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,556 |
| British Monopoly Board | 0 | - | 4.52 | 41,148 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,323 |
| Name the English Monarchs | 0 | - | 4.91 | 501,809 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,002 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,571 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,647 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,552 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,644 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,371 |
| Slavic Languages | 0 | - | 4.68 | 54,293 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,051 |
| France A-Z | 0 | - | 4.16 | 38,183 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,808 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,115 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,092 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.39 | 82,513 |
| Geography of Germany | 0 | - | 4.35 | 17,171 |
| History of Germany | 0 | - | 4.39 | 52,789 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,450 |
| Name that Greek Letter | 0 | - | 4.93 | 323,197 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,527 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,620 |
| Counties of Ireland | 0 | - | 4.92 | 194,849 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,586 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,781 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,357 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,808 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,705 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,870 |
| Roman Names for Places | 0 | - | 4.62 | 58,209 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,980 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,191 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,431 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,588 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,736 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,817 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,631 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,152 |
| Switzerland A-Z | 0 | - | 4.45 | 25,625 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,643 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,006 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,969 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,320 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,873 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,238 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,567 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,730 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,918 |
| History of Russia Quiz | 0 | - | 4.49 | 31,893 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,708 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,205 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,918 |
| Most Popular Baby Boy Names in Germany | 0 | - | 4.34 | 67,030 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,123 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,914 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,641 |
| Famous Irish People | 0 | - | 4.05 | 45,985 |
| History of Italy | 0 | - | 4.55 | 31,949 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,683 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,632 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,381 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,182 |
| Geography of Spain | 0 | - | 4.59 | 22,059 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,027 |
| British Geography A-Z | 0 | - | 4.42 | 19,498 |
| Imagine Lyrics | 0 | - | 4.53 | 43,237 |
| A Quiz About The Beatles | 0 | - | 4.56 | 47,886 |
| Sherlock Holmes Quiz | 0 | - | 4.49 | 26,639 |
| London A-Z | 0 | - | 4.10 | 40,749 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,961 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,531 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,718 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,446 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,161 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,213 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,246 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,300 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,616 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,515 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,843 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,207 |
| Europe Map Quiz | 0 | - | 5.00 | 4,757,458 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,227 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,888 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,179 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,200 |
| European Geography By Letter - S #1 | 0 | - | 4.54 | 100,423 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,380 |
| Capitals of French Regions | 0 | - | 4.45 | 16,050 |
| Regions of France | 0 | - | 4.75 | 120,530 |
| France Immigration by Country | 0 | - | 4.70 | 76,437 |
| Kings of France Quiz | 0 | - | 4.20 | 32,693 |
| Famous Germans | 0 | - | 4.50 | 55,221 |
| German Groups of Things | 0 | - | 4.46 | 38,452 |
| Capitals of German States | 0 | - | 4.74 | 28,936 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,297 |
| Germany True or False? | 0 | - | 4.61 | 48,756 |
| German History A-Z | 0 | - | 4.49 | 24,583 |
| German Inventions | 0 | - | 3.91 | 30,229 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,618 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,785 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,912 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,482 |
| Ancient Greek Words | 0 | - | 4.93 | 111,424 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,365 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,169 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,033 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,259 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,239 |
| British to American Food Translation | 0 | - | 3.38 | 51,952 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,118 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,419 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,599 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,625 |
| Beatles Lyrics First Names | 0 | - | 4.38 | 34,638 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,626 |
| Elton John Quiz | 0 | - | 4.48 | 18,460 |
| Famous Scottish People | 0 | - | 4.22 | 18,391 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,798 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,539 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,038 |
| Australian Capitals | 0 | - | 4.92 | 62,706 |
| European Physical Geography | 0 | - | 4.26 | 33,482 |
| Geography of Russia | 0 | - | 4.57 | 21,515 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,920 |
| History of Austria | 0 | - | 4.70 | 17,844 |
