| Regions of Italy | 0 | - | 4.92 | 76,966 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,727 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,285 |
| States of Germany | 0 | - | 4.95 | 154,330 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,649 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,762 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,236 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,707 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,446 |
| Departments of France | 0 | - | 4.93 | 55,063 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,151 |
| England or Wales? | 0 | - | 4.94 | 45,943 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,678 |
| Official European Union Languages | 0 | - | 4.97 | 239,679 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,577 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,650 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,559 |
| Roman Emperors | 0 | - | 4.95 | 121,096 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,284 |
| Italian Foods | 0 | - | 4.30 | 73,228 |
| History of Italy | 0 | - | 4.55 | 32,138 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,040 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 87,979 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,549 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,504 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,673 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,412 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,519 |
| Counties of England | 0 | - | 4.97 | 802,352 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,065 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,190 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,728 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,203 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,494 |
| Celtic Nations | 0 | - | 4.61 | 47,083 |
| Regions of France | 0 | - | 4.70 | 121,977 |
| France Immigration by Country | 0 | - | 4.70 | 76,902 |
| Famous Germans | 0 | - | 4.50 | 55,764 |
| German Groups of Things | 0 | - | 4.47 | 38,622 |
| Germany True or False? | 0 | - | 4.61 | 49,003 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,430 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,319 |
| Italy True or False? | 0 | - | 4.42 | 47,594 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,574 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,487 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,712 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,398 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,300 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,761 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,803 |
| Champions League Winners | 0 | - | 4.92 | 1,015,307 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,662 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,717 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,472 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,912 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,335 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,549 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,738 |
| Italy Country Quiz | 0 | - | 4.77 | 123,980 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,160 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,363 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,478 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,937 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,337 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,834 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,733 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,633 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,781 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,767 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,915 |
| Famous French People | 0 | - | 4.07 | 36,071 |
| France Cities Map Quiz | 0 | - | 4.95 | 167,720 |
| Word Chain - France | 0 | - | 4.38 | 42,925 |
| Germany Country Quiz | 0 | - | 4.82 | 158,763 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,023 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,213 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,033 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,697 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,976 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,618 |
| The Mafia Quiz | 0 | - | 4.46 | 23,431 |
| Byzantine History | 0 | - | 4.91 | 29,013 |
| Byzantine Emperors | 0 | - | 4.93 | 14,573 |
| History of The Netherlands | 0 | - | 4.46 | 17,545 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,418 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,793 |
| Canary Islands | 0 | - | 4.62 | 17,522 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,766 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,031 |
| British Spellings | 0 | - | 4.06 | 99,590 |
| British Groups of Things | 0 | - | 4.26 | 82,997 |
| British Acronyms | 0 | - | 4.40 | 45,927 |
| UK Immigration by Country | 0 | - | 4.94 | 141,629 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,099 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,895 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,664 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,094 |
| Geography of Scotland | 0 | - | 4.63 | 21,729 |
| Elton John Quiz | 0 | - | 4.49 | 18,520 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,973 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,737 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,718 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,270 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 120,699 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,896 |
| Slavic Languages | 0 | - | 4.68 | 54,669 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,062 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,667 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,139 |
| France A-Z | 0 | - | 4.16 | 38,325 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,664 |
| French History Multiple Choice | 0 | - | 4.55 | 33,214 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,524 |
| History of Germany | 0 | - | 4.39 | 52,966 |
| The Trojan War | 0 | - | 4.83 | 39,966 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,541 |
| Name that Greek Letter | 0 | - | 4.93 | 324,882 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,866 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,726 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,224 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,132 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,296 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,252 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,194 |
| Roman Names for Places | 0 | - | 4.62 | 58,675 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,613 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,612 |
| Most Common First Names in Spain | 0 | - | 4.32 | 55,202 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,340 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,832 |
| Switzerland A-Z | 0 | - | 4.45 | 25,756 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,954 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,085 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 47,046 |
| Malta Country Quiz | 0 | - | 4.81 | 31,226 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,780 |
| History of Russia Quiz | 0 | - | 4.47 | 31,998 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,863 |
| Movies Set in France | 0 | - | 4.26 | 13,147 |
| French Inventions | 0 | - | 4.10 | 13,923 |
| History of Paris | 0 | - | 4.24 | 13,681 |
| Word Chain - Germany | 0 | - | 4.31 | 22,677 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,761 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,402 |
| Italian Inventions | 0 | - | 3.81 | 18,472 |
| Word Chain - Italy | 0 | - | 4.07 | 23,214 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,309 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,712 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,810 |
| Famous Nordic People | 0 | - | 4.34 | 20,289 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,644 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,413 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,399 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,573 |
| People on Money - England | 0 | - | 4.29 | 16,643 |
| Name a Valid English City | 0 | - | 4.19 | 16,815 |
| UK General Knowledge Multiple Choice #3 | 0 | - | 4.53 | 18,161 |
| Imagine Lyrics | 0 | - | 4.53 | 43,528 |
| A Quiz About The Beatles | 0 | - | 4.56 | 48,306 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,910 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,189 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,498 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,167 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,806 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,209 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,920 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,434 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,648 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,371 |
| Europe Map Quiz | 0 | - | 5.00 | 4,785,641 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,495 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,157 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,437 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,407 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,266 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,513 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,711 |
| Capitals of French Regions | 0 | - | 4.45 | 16,172 |
| Kings of France Quiz | 0 | - | 4.20 | 32,907 |
| Capitals of German States | 0 | - | 4.74 | 29,064 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,529 |
| Ancient Greek Words | 0 | - | 4.93 | 112,392 |
| Serie A Champions | 0 | - | 4.29 | 58,759 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,170 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,256 |
| British to American Food Translation | 0 | - | 3.38 | 52,030 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,561 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,794 |
| Beatles Lyrics First Names | 0 | - | 4.36 | 40,167 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 41,016 |
| Famous Scottish People | 0 | - | 4.22 | 18,437 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,560 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,258 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,840 |
| Australian Capitals | 0 | - | 4.92 | 62,825 |
| European Physical Geography | 0 | - | 4.26 | 33,588 |
| Geography of Russia | 0 | - | 4.57 | 21,592 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,111 |
| History of Austria | 0 | - | 4.70 | 17,968 |
| Austria Country Quiz | 0 | - | 4.57 | 60,029 |
