| European Countries by First 2 Letters | 0 | - | 4.95 | 531,665 |
| States of Germany | 0 | - | 4.95 | 153,945 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,513 |
| Regions of Italy | 0 | - | 4.92 | 76,660 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,642 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,985 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,593 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,848 |
| Departments of France | 0 | - | 4.93 | 54,838 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,695 |
| England or Wales? | 0 | - | 4.94 | 45,887 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,559 |
| Official European Union Languages | 0 | - | 4.97 | 239,407 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,425 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,116 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,168 |
| The Trojan War | 0 | - | 4.83 | 39,928 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,999 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,560 |
| Name that Greek Letter | 0 | - | 4.93 | 324,630 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,657 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,216 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,103 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,992 |
| British Spellings | 0 | - | 4.06 | 99,554 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,871 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,132 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 174,852 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,609 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,332 |
| Counties of England | 0 | - | 4.97 | 801,108 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,983 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,469 |
| Celtic Nations | 0 | - | 4.61 | 47,059 |
| Regions of France | 0 | - | 4.70 | 121,707 |
| France Immigration by Country | 0 | - | 4.70 | 76,822 |
| Famous Germans | 0 | - | 4.50 | 55,658 |
| German Groups of Things | 0 | - | 4.47 | 38,591 |
| Germany True or False? | 0 | - | 4.61 | 48,958 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,311 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,047 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,622 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,377 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,877 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,636 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,759 |
| Champions League Winners | 0 | - | 4.92 | 1,012,867 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,543 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,590 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,230 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,681 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,841 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,335 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,510 |
| Greece Country Quiz | 0 | - | 4.74 | 66,528 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,308 |
| American to British Word Translation | 0 | - | 4.14 | 139,527 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,360 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,647 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,256 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,805 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,685 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,069 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,285 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,377 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,870 |
| Famous French People | 0 | - | 4.07 | 35,987 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,495 |
| Word Chain - France | 0 | - | 4.38 | 42,896 |
| Germany Country Quiz | 0 | - | 4.83 | 158,555 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,884 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,001 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,860 |
| Italian Foods | 0 | - | 4.30 | 73,113 |
| The Mafia Quiz | 0 | - | 4.46 | 23,408 |
| History of The Netherlands | 0 | - | 4.46 | 17,526 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,303 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,569 |
| Canary Islands | 0 | - | 4.62 | 17,512 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,567 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,949 |
| British Groups of Things | 0 | - | 4.25 | 82,970 |
| British Acronyms | 0 | - | 4.40 | 45,899 |
| UK Immigration by Country | 0 | - | 4.94 | 141,448 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,085 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,629 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,441 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,055 |
| Geography of Scotland | 0 | - | 4.63 | 21,704 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,596 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,700 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,699 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,140 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,240 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,768 |
| Slavic Languages | 0 | - | 4.68 | 54,607 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,005 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,656 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,114 |
| France A-Z | 0 | - | 4.16 | 38,306 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,568 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,426 |
| History of Germany | 0 | - | 4.39 | 52,942 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,135 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,781 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,702 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,464 |
| Roman Emperors | 0 | - | 4.95 | 120,861 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,588 |
| Most Common First Names in Spain | 0 | - | 4.32 | 54,706 |
| Switzerland A-Z | 0 | - | 4.45 | 25,738 |
| British to American Word Translation | 0 | - | 3.74 | 255,267 |
| British Foods by Description | 0 | - | 3.94 | 48,362 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,905 |
| British and American Word Differences | 0 | - | 2.63 | 46,915 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,072 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,003 |
| Malta Country Quiz | 0 | - | 4.81 | 31,197 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,616 |
| History of Russia Quiz | 0 | - | 4.47 | 31,983 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,830 |
| Movies Set in France | 0 | - | 4.26 | 13,139 |
| French Inventions | 0 | - | 4.10 | 13,918 |
| History of Paris | 0 | - | 4.24 | 13,667 |
| Word Chain - Germany | 0 | - | 4.31 | 22,659 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,209 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,911 |
| History of Italy | 0 | - | 4.55 | 32,106 |
| Word Chain - Italy | 0 | - | 4.07 | 23,205 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,179 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,145 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,781 |
| Famous Nordic People | 0 | - | 4.34 | 20,234 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,627 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,377 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,382 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,564 |
| People on Money - England | 0 | - | 4.29 | 16,634 |
| Name a Valid English City | 0 | - | 4.19 | 16,789 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,636 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,011 |
| European Geography By Letter - C | 0 | - | 4.43 | 122,610 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,016 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,689 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,014 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,834 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,349 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,569 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,252 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,077 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,443 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,099 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,395 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,363 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,188 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,413 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,633 |
| Capitals of French Regions | 0 | - | 4.45 | 16,153 |
| Kings of France Quiz | 0 | - | 4.20 | 32,874 |
| German Loan Words | 0 | - | 4.27 | 140,429 |
| Capitals of German States | 0 | - | 4.74 | 29,032 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,479 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,552 |
| Ancient Greek Words | 0 | - | 4.93 | 112,216 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,404 |
| British to American Food Translation | 0 | - | 3.38 | 52,016 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,537 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,768 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,813 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,541 |
| Famous Scottish People | 0 | - | 4.22 | 18,425 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,272 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,017 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,770 |
| Australian Capitals | 0 | - | 4.92 | 62,804 |
| European Physical Geography | 0 | - | 4.26 | 33,571 |
| Geography of Russia | 0 | - | 4.57 | 21,574 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,071 |
| History of Austria | 0 | - | 4.70 | 17,949 |
| Austria Country Quiz | 0 | - | 4.57 | 59,962 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,108 |
| France Country Quiz | 0 | - | 4.70 | 135,437 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,300 |
| Geography of the French Empire | 0 | - | 4.45 | 27,193 |
| The French Revolution | 0 | - | 4.47 | 24,108 |
| France Multiple Choice | 0 | - | 4.39 | 40,810 |
| Tour de France Winners | 0 | - | 4.27 | 15,471 |
| History of France | 0 | - | 4.61 | 57,457 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,539 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,323 |
| Italy Country Quiz | 0 | - | 4.77 | 123,867 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,971 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,892 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,635 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,807 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,646 |
| The Vikings! | 0 | - | 4.46 | 28,389 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,196 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| Spain Country Quiz | 0 | - | 4.44 | 129,045 |
