| European Countries by First 2 Letters | 0 | - | 4.95 | 528,612 |
| States of Germany | 0 | - | 4.96 | 151,820 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,864 |
| Regions of Italy | 0 | - | 4.92 | 75,521 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,808 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,602 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,980 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,035 |
| Departments of France | 0 | - | 4.93 | 53,738 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,513 |
| England or Wales? | 0 | - | 4.94 | 45,591 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,983 |
| Official European Union Languages | 0 | - | 4.97 | 238,084 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,589 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,427 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,931 |
| The Trojan War | 0 | - | 4.83 | 39,640 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,874 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,974 |
| Name that Greek Letter | 0 | - | 4.93 | 323,055 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,510 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,870 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,482 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,745 |
| British Spellings | 0 | - | 4.06 | 99,401 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,230 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,943 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,499 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,278 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,865 |
| Counties of England | 0 | - | 4.97 | 794,577 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,084 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,353 |
| Celtic Nations | 0 | - | 4.69 | 46,906 |
| Regions of France | 0 | - | 4.75 | 120,372 |
| France Immigration by Country | 0 | - | 4.70 | 76,385 |
| Famous Germans | 0 | - | 4.50 | 55,146 |
| German Groups of Things | 0 | - | 4.46 | 38,431 |
| Germany True or False? | 0 | - | 4.61 | 48,735 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,856 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,252 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,214 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,232 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,966 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,055 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,578 |
| Champions League Winners | 0 | - | 4.92 | 1,003,531 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,874 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,901 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,662 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,294 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,101 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,527 |
| Greece Country Quiz | 0 | - | 4.74 | 66,116 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,024 |
| American to British Word Translation | 0 | - | 4.14 | 138,721 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,525 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,998 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,553 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,657 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,383 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,522 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,244 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,617 |
| Famous French People | 0 | - | 4.06 | 34,660 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,409 |
| Word Chain - France | 0 | - | 4.38 | 42,734 |
| Germany Country Quiz | 0 | - | 4.82 | 157,541 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,848 |
| Italy Country Quiz | 0 | - | 4.82 | 123,163 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,075 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,795 |
| Italian Foods | 0 | - | 4.30 | 72,620 |
| The Mafia Quiz | 0 | - | 4.46 | 23,293 |
| History of The Netherlands | 0 | - | 4.46 | 17,403 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,644 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,343 |
| Canary Islands | 0 | - | 4.62 | 17,458 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,688 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,582 |
| British Groups of Things | 0 | - | 4.25 | 82,830 |
| British Acronyms | 0 | - | 4.39 | 45,752 |
| UK Immigration by Country | 0 | - | 4.94 | 140,639 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,014 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,397 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,191 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,652 |
| Geography of Scotland | 0 | - | 4.63 | 21,588 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,695 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,550 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,640 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,475 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,327 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,336 |
| Slavic Languages | 0 | - | 4.68 | 54,261 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,706 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,610 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,616 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,044 |
| France A-Z | 0 | - | 4.16 | 38,165 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,040 |
| French History Multiple Choice | 0 | - | 4.55 | 32,997 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,896 |
| History of Germany | 0 | - | 4.39 | 52,775 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,444 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,601 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,573 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,402 |
| Roman Emperors | 0 | - | 4.95 | 119,638 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,416 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,580 |
| Switzerland A-Z | 0 | - | 4.45 | 25,619 |
| British to American Word Translation | 0 | - | 3.74 | 254,989 |
| British Foods by Description | 0 | - | 3.94 | 48,311 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,628 |
| British and American Word Differences | 0 | - | 2.63 | 46,854 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,997 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,678 |
| Malta Country Quiz | 0 | - | 4.81 | 30,999 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,830 |
| History of Russia Quiz | 0 | - | 4.49 | 31,878 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,690 |
| Movies Set in France | 0 | - | 4.26 | 13,111 |
| French Inventions | 0 | - | 4.08 | 13,890 |
| History of Paris | 0 | - | 4.24 | 13,637 |
| Word Chain - Germany | 0 | - | 4.31 | 22,562 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,114 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,471 |
| History of Italy | 0 | - | 4.55 | 31,933 |
| Word Chain - Italy | 0 | - | 4.07 | 23,146 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,623 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,086 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,608 |
| Famous Nordic People | 0 | - | 4.34 | 20,061 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,608 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,156 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,323 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,516 |
| People on Money - England | 0 | - | 4.29 | 16,600 |
| Name a Valid English City | 0 | - | 4.19 | 16,698 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,833 |
| European Geography By Letter - A | 0 | - | 4.51 | 144,824 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,575 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,314 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,046 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,112 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,109 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,204 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,544 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,229 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,788 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,116 |
| Europe Map Quiz | 0 | - | 5.00 | 4,754,749 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,203 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,861 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,150 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,176 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,347 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,353 |
| Capitals of French Regions | 0 | - | 4.45 | 16,035 |
| Kings of France Quiz | 0 | - | 4.20 | 32,680 |
| German Loan Words | 0 | - | 4.27 | 135,715 |
| Capitals of German States | 0 | - | 4.74 | 28,924 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,275 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,475 |
| Ancient Greek Words | 0 | - | 4.93 | 111,321 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,991 |
| British to American Food Translation | 0 | - | 3.38 | 51,942 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,406 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,594 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,594 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,438 |
| Famous Scottish People | 0 | - | 4.22 | 18,387 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,624 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,392 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,396 |
| Australian Capitals | 0 | - | 4.92 | 62,694 |
| European Physical Geography | 0 | - | 4.26 | 33,466 |
| Geography of Russia | 0 | - | 4.57 | 21,508 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,901 |
| History of Austria | 0 | - | 4.70 | 17,831 |
| Austria Country Quiz | 0 | - | 4.57 | 59,628 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,641 |
| France Country Quiz | 0 | - | 4.70 | 134,729 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,108 |
| Geography of the French Empire | 0 | - | 4.45 | 27,019 |
| The French Revolution | 0 | - | 4.46 | 23,898 |
| France Multiple Choice | 0 | - | 4.38 | 40,701 |
| Tour de France Winners | 0 | - | 4.27 | 15,335 |
| History of France | 0 | - | 4.59 | 56,809 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,460 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,389 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,078 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,688 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,429 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,365 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,367 |
| The Vikings! | 0 | - | 4.46 | 28,318 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,729 |
| The Portuguese Empire | 0 | - | 4.58 | 12,045 |
