| Regions of Italy | 0 | - | 4.92 | 76,970 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,727 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,295 |
| States of Germany | 0 | - | 4.95 | 154,342 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,654 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,765 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,239 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,715 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,465 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,324 |
| Departments of France | 0 | - | 4.93 | 55,067 |
| England or Wales? | 0 | - | 4.94 | 45,945 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,679 |
| Official European Union Languages | 0 | - | 4.97 | 239,686 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,580 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,670 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,557 |
| Name that Greek Letter | 0 | - | 4.93 | 324,890 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,727 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,561 |
| Roman Emperors | 0 | - | 4.95 | 121,103 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,286 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,789 |
| Italian Foods | 0 | - | 4.30 | 73,228 |
| History of Italy | 0 | - | 4.55 | 32,138 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,311 |
| The Mafia Quiz | 0 | - | 4.46 | 23,432 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,040 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,604 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 87,983 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,561 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,512 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,673 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,413 |
| Counties of England | 0 | - | 4.97 | 802,383 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,244 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 72,018 |
| Top African Languages on a Map | 0 | - | 4.94 | 75,174 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,495 |
| Celtic Nations | 0 | - | 4.61 | 47,085 |
| Regions of France | 0 | - | 4.70 | 121,989 |
| France Immigration by Country | 0 | - | 4.70 | 76,902 |
| Famous Germans | 0 | - | 4.50 | 55,767 |
| German Groups of Things | 0 | - | 4.47 | 38,623 |
| Germany True or False? | 0 | - | 4.61 | 49,005 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,436 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,591 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,487 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,713 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,398 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,312 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,768 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,803 |
| Champions League Winners | 0 | - | 4.92 | 1,015,379 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,678 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,719 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,492 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,915 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,344 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,561 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,747 |
| Word Chain - Italy | 0 | - | 4.07 | 23,216 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,160 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,364 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,048 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,482 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,951 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,340 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,834 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,688 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,735 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,649 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,789 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,775 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,915 |
| Famous French People | 0 | - | 4.07 | 36,075 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,732 |
| Word Chain - France | 0 | - | 4.38 | 42,925 |
| Germany Country Quiz | 0 | - | 4.82 | 158,769 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,028 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,214 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,034 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,156 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,985 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,619 |
| History of The Netherlands | 0 | - | 4.46 | 17,545 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,422 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,796 |
| Canary Islands | 0 | - | 4.62 | 17,522 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,769 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,034 |
| British Spellings | 0 | - | 4.06 | 99,590 |
| British Groups of Things | 0 | - | 4.26 | 83,000 |
| British Acronyms | 0 | - | 4.40 | 45,927 |
| UK Immigration by Country | 0 | - | 4.94 | 141,639 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,099 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,902 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,670 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,094 |
| Geography of Scotland | 0 | - | 4.63 | 21,730 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,986 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,759 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,738 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,718 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,277 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 120,833 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,899 |
| Slavic Languages | 0 | - | 4.68 | 54,673 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,674 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,065 |
| 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 | 38,327 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,670 |
| French History Multiple Choice | 0 | - | 4.55 | 33,217 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,525 |
| History of Germany | 0 | - | 4.39 | 52,966 |
| The Trojan War | 0 | - | 4.83 | 39,966 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,873 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,255 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,195 |
| Roman Names for Places | 0 | - | 4.62 | 58,677 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,620 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,614 |
| Most Common First Names in Spain | 0 | - | 4.33 | 55,209 |
| Languages of Spain | 0 | - | 4.36 | 23,426 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,833 |
| Switzerland A-Z | 0 | - | 4.45 | 25,756 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,956 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,085 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,067 |
| Malta Country Quiz | 0 | - | 4.81 | 31,227 |
| History of Russia Quiz | 0 | - | 4.47 | 31,999 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,864 |
| 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 | 22,678 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,548 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,431 |
| Italian Inventions | 0 | - | 3.81 | 18,472 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,713 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,810 |
| Famous Nordic People | 0 | - | 4.34 | 20,290 |
| 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 | 29,400 |
| 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 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,936 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,225 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,532 |
| European Geography By Letter - D | 0 | - | 4.50 | 111,214 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,827 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,241 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,940 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,446 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,681 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,390 |
| Europe Map Quiz | 0 | - | 5.00 | 4,785,906 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,503 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,160 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,441 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,412 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,276 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,956 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,516 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,712 |
| Capitals of French Regions | 0 | - | 4.45 | 16,173 |
| Kings of France Quiz | 0 | - | 4.20 | 32,909 |
| Capitals of German States | 0 | - | 4.74 | 29,064 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,530 |
| Ancient Greek Words | 0 | - | 4.93 | 112,401 |
| Serie A Champions | 0 | - | 4.29 | 58,761 |
| 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 | 52,031 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,561 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,800 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,205 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,732 |
| Famous Scottish People | 0 | - | 4.22 | 18,438 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,563 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,266 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,896 |
| Australian Capitals | 0 | - | 4.92 | 62,826 |
| European Physical Geography | 0 | - | 4.26 | 33,589 |
| Geography of Russia | 0 | - | 4.57 | 21,595 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,114 |
| History of Austria | 0 | - | 4.70 | 17,969 |
| Austria Country Quiz | 0 | - | 4.57 | 60,032 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,219 |
| France Country Quiz | 0 | - | 4.70 | 135,601 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,349 |
| Geography of the French Empire | 0 | - | 4.45 | 27,210 |
| The French Revolution | 0 | - | 4.47 | 24,139 |
| France Multiple Choice | 0 | - | 4.39 | 40,834 |
| Tour de France Winners | 0 | - | 4.27 | 15,510 |
| History of France | 0 | - | 4.61 | 57,570 |
