| Regions of Italy | 0 | - | 4.92 | 75,791 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,537 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,246 |
| States of Germany | 0 | - | 4.96 | 152,341 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,978 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,074 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,850 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,129 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,867 |
| Departments of France | 0 | - | 4.93 | 54,015 |
| Italy Country Quiz | 0 | - | 4.82 | 123,331 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,278 |
| England or Wales? | 0 | - | 4.94 | 45,658 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,078 |
| Official European Union Languages | 0 | - | 4.97 | 238,363 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,764 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,943 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,486 |
| Roman Emperors | 0 | - | 4.95 | 119,892 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,949 |
| Italian Foods | 0 | - | 4.30 | 72,740 |
| History of Italy | 0 | - | 4.55 | 31,962 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,808 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,333 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,295 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,360 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,331 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,959 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,460 |
| Counties of England | 0 | - | 4.97 | 795,989 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,738 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,002 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,603 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,437 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,378 |
| Celtic Nations | 0 | - | 4.69 | 46,928 |
| Regions of France | 0 | - | 4.75 | 120,653 |
| France Immigration by Country | 0 | - | 4.70 | 76,473 |
| Famous Germans | 0 | - | 4.50 | 55,257 |
| German Groups of Things | 0 | - | 4.46 | 38,468 |
| Germany True or False? | 0 | - | 4.61 | 48,777 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,964 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,423 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,805 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,088 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,309 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,255 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,321 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,181 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,613 |
| Champions League Winners | 0 | - | 4.92 | 1,005,770 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,031 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,181 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,887 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,904 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,317 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,720 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,097 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,100 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,945 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,413 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,694 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,686 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,463 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,023 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,631 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,958 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,667 |
| Famous French People | 0 | - | 4.06 | 35,445 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,640 |
| Word Chain - France | 0 | - | 4.38 | 42,766 |
| Germany Country Quiz | 0 | - | 4.82 | 157,755 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,057 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,971 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,902 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,770 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,945 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,300 |
| The Mafia Quiz | 0 | - | 4.46 | 23,314 |
| Byzantine History | 0 | - | 4.91 | 28,819 |
| Byzantine Emperors | 0 | - | 4.94 | 13,541 |
| History of The Netherlands | 0 | - | 4.46 | 17,428 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,820 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,561 |
| Canary Islands | 0 | - | 4.62 | 17,473 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,894 |
| Switzerland Immigration by Country | 0 | - | 4.68 | 29,673 |
| British Spellings | 0 | - | 4.06 | 99,434 |
| British Groups of Things | 0 | - | 4.25 | 82,859 |
| British Acronyms | 0 | - | 4.40 | 45,783 |
| UK Immigration by Country | 0 | - | 4.94 | 140,811 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,032 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,668 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,480 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,751 |
| Geography of Scotland | 0 | - | 4.63 | 21,609 |
| Elton John Quiz | 0 | - | 4.48 | 18,464 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,188 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,588 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,651 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,638 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,819 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,409 |
| Slavic Languages | 0 | - | 4.68 | 54,326 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,752 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,621 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,057 |
| France A-Z | 0 | - | 4.16 | 38,191 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,142 |
| French History Multiple Choice | 0 | - | 4.55 | 33,024 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,990 |
| History of Germany | 0 | - | 4.39 | 52,801 |
| The Trojan War | 0 | - | 4.83 | 39,693 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,900 |
| Name that Greek Letter | 0 | - | 4.93 | 323,324 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,737 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,595 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,835 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,428 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,930 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,724 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,894 |
| Roman Names for Places | 0 | - | 4.62 | 58,250 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,054 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,448 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,602 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,770 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,218 |
| Switzerland A-Z | 0 | - | 4.45 | 25,635 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,663 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,014 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,889 |
| Malta Country Quiz | 0 | - | 4.81 | 31,040 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,998 |
| History of Russia Quiz | 0 | - | 4.47 | 31,906 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,715 |
| Movies Set in France | 0 | - | 4.26 | 13,118 |
| French Inventions | 0 | - | 4.08 | 13,896 |
| History of Paris | 0 | - | 4.24 | 13,644 |
| Word Chain - Germany | 0 | - | 4.31 | 22,578 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,442 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,813 |
| Italian Inventions | 0 | - | 3.81 | 18,437 |
| Word Chain - Italy | 0 | - | 4.07 | 23,157 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,734 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,645 |
| Famous Nordic People | 0 | - | 4.34 | 20,091 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,613 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,210 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,336 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,525 |
| People on Money - England | 0 | - | 4.29 | 16,608 |
| Name a Valid English City | 0 | - | 4.19 | 16,713 |
| UK General Knowledge Multiple Choice #3 | 0 | - | 4.53 | 18,098 |
| Imagine Lyrics | 0 | - | 4.53 | 43,256 |
| A Quiz About The Beatles | 0 | - | 4.56 | 47,918 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,062 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,814 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 114,147 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,550 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,257 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,292 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,362 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,356 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,676 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,565 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,890 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,268 |
| Europe Map Quiz | 0 | - | 5.00 | 4,759,994 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,247 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,916 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,200 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,218 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,463 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,411 |
| Capitals of French Regions | 0 | - | 4.45 | 16,059 |
| Kings of France Quiz | 0 | - | 4.20 | 32,710 |
| Capitals of German States | 0 | - | 4.74 | 28,945 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,312 |
| Ancient Greek Words | 0 | - | 4.93 | 111,507 |
| Serie A Champions | 0 | - | 4.29 | 58,226 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,076 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,176 |
| British to American Food Translation | 0 | - | 3.38 | 51,958 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,433 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,644 |
| Beatles Lyrics First Names | 0 | - | 4.38 | 34,653 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,653 |
| Famous Scottish People | 0 | - | 4.22 | 18,392 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,932 |
| Africa Map Quiz | 0 | - | 5.00 | 2,116,724 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,627 |
| Australian Capitals | 0 | - | 4.92 | 62,715 |
| European Physical Geography | 0 | - | 4.26 | 33,494 |
| Geography of Russia | 0 | - | 4.57 | 21,522 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,936 |
| History of Austria | 0 | - | 4.70 | 17,854 |
| Austria Country Quiz | 0 | - | 4.57 | 59,709 |
| Belgium Country Quiz | 0 | - | 4.73 | 71,760 |
| France Country Quiz | 0 | - | 4.70 | 134,909 |
