| Count to 10 in Europe: Pro | 0 | - | 4.85 | 65,243 |
| Official European Union Languages | 0 | - | 4.98 | 228,270 |
| European Countries in their Native Language | 0 | - | 4.99 | 151,320 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 509,942 |
| Save Europeans by Guessing Countries | 0 | - | 4.87 | 193,329 |
| States of Germany | 0 | - | 4.94 | 138,466 |
| Germany Immigration by Country | 0 | - | 4.86 | 75,741 |
| Counties of Ireland | 0 | - | 4.90 | 176,369 |
| Regions of Italy | 0 | - | 4.91 | 68,258 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 35,108 |
| Regions of Spain Quiz | 0 | - | 4.89 | 104,891 |
| Cantons of Switzerland | 0 | - | 4.97 | 45,528 |
| Departments of France | 0 | - | 4.88 | 44,949 |
| Largest Islands of Greece | 0 | - | 4.58 | 44,558 |
| Countries Surrounding Rome | 0 | - | 4.96 | 48,185 |
| England or Wales? | 0 | - | 4.94 | 43,332 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 409,893 |
| Slavic Languages | 0 | - | 4.65 | 51,833 |
| Europe Geography Decoder | 0 | - | 4.85 | 67,128 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.84 | 40,725 |
| Ancient Greek Trivia | 0 | - | 4.56 | 65,349 |
| Countries that Beat Switzerland | 0 | - | 4.87 | 40,193 |
| Top European Languages on a Map | 0 | - | 4.78 | 126,179 |
| Top African Languages on a Map | 0 | - | 4.92 | 64,970 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 111,267 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 51,675 |
| Add A Letter - Make a European City | 0 | - | 4.87 | 22,372 |
| Celtic Nations | 0 | - | 4.74 | 46,030 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.84 | 84,086 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 298,936 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 145,156 |
| Regions of France | 0 | - | 4.70 | 111,432 |
| France Immigration by Country | 0 | - | 4.77 | 73,395 |
| Famous Germans | 0 | - | 4.44 | 40,099 |
| German Groups of Things | 0 | - | 4.46 | 37,458 |
| Germany Multiple Choice | 0 | - | 4.83 | 52,096 |
| Germany True or False? | 0 | - | 4.63 | 46,884 |
| Provinces of the Netherlands | 0 | - | 4.75 | 37,302 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 47,190 |
| Counties of England | 0 | - | 4.97 | 750,229 |
| Foods in a Full English Breakfast | 0 | - | 4.45 | 97,969 |
| Top Asian Languages on a Map | 0 | - | 4.94 | 66,588 |
| Countries where Arabic is an Official Language | 0 | - | 4.83 | 53,771 |
| Catholic Countries in Europe | 0 | - | 4.83 | 90,004 |
| European Geography By Letter - B #2 | 0 | - | 4.81 | 65,739 |
| Category Elimination - European Geography #3 | 0 | - | 4.84 | 74,094 |
| Federal Subjects of Russia | 0 | - | 4.93 | 130,075 |
| Regions of France Map Quiz | 0 | - | 4.96 | 136,320 |
| States of Germany Map Quiz | 0 | - | 4.91 | 126,957 |
| Geography of Ancient Greece | 0 | - | 4.77 | 31,032 |
| UK Cities Map Quiz | 0 | - | 4.95 | 450,919 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 89,472 |
| Counties of England Map Quiz | 0 | - | 4.97 | 298,062 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.96 | 316,318 |
| Champions League Winners | 0 | - | 4.91 | 949,858 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.70 | 56,421 |
| States of the German Confederation in 1848 | 0 | - | 4.85 | 29,430 |
| Sweden Immigration by Country | 0 | - | 4.64 | 44,965 |
| Languages of the United Kingdom | 0 | - | 4.13 | 39,824 |
| United Kingdom A-Z | 0 | - | 4.53 | 84,725 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 16,573 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 218,093 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 263,482 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 155,905 |
| France Cities Map Quiz | 0 | - | 4.95 | 158,506 |
| Word Chain - France | 0 | - | 4.37 | 41,636 |
| Germany Country Quiz | 0 | - | 4.81 | 150,199 |
| Germany Cities Map Quiz | 0 | - | 4.83 | 113,259 |
| Famous Italians | 0 | - | 4.40 | 70,691 |
| Italy Country Quiz | 0 | - | 4.81 | 116,904 |
| Regions of Italy Map Quiz | 0 | - | 4.95 | 142,346 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 145,880 |
| Italian Foods | 0 | - | 4.30 | 69,057 |
| The Mafia Quiz | 0 | - | 4.46 | 22,585 |
| History of The Netherlands | 0 | - | 4.45 | 16,592 |
| Famous Nordic People | 0 | - | 4.41 | 10,973 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 92,034 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 178,347 |
| Canary Islands | 0 | - | 4.61 | 17,037 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 102,002 |
| Switzerland Immigration by Country | 0 | - | 4.77 | 26,277 |
| British Spellings Quiz | 0 | - | 4.07 | 97,736 |
| British Groups of Things | 0 | - | 4.25 | 81,955 |
| British Acronyms | 0 | - | 4.39 | 44,761 |
| UK Immigration by Country | 0 | - | 4.94 | 133,929 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,434 |
| United Kingdom Country Quiz | 0 | - | 4.95 | 130,245 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 109,917 |
| English Monarchs in Order by First Letter | 0 | - | 4.41 | 28,709 |
| Geography of Scotland | 0 | - | 4.63 | 20,681 |
| All UEFA Champions League Teams Ever | 0 | - | 4.83 | 121,145 |
| Pre-Euro Currencies | 0 | - | 4.43 | 51,269 |
| Word Scramble - European Countries | 0 | - | 4.74 | 135,728 |
| Top 20 Football Clubs in Europe | 0 | - | 4.49 | 104,056 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 61,434 |
| French Geography Quiz #1 | 0 | - | 4.87 | 33,144 |
| Andorra Country Quiz | 0 | - | 4.89 | 29,960 |
| Famous Swiss and Austrian People | 0 | - | 4.42 | 14,136 |
| Famous Dutch and Belgian People | 0 | - | 4.53 | 17,434 |
| France A-Z | 0 | - | 4.18 | 37,210 |
| History of Germany | 0 | - | 4.38 | 51,491 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 615,936 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 40,360 |
| Capitals of Italian Regions | 0 | - | 4.61 | 35,609 |
| Spanish Immigration by Country | 0 | - | 4.63 | 54,103 |
| Most Common First Names in Spain | 0 | - | 4.26 | 44,743 |
| Languages of Spain | 0 | - | 4.38 | 22,451 |
| Switzerland A-Z | 0 | - | 4.48 | 19,386 |
| Most Common Surnames in the UK | 0 | - | 4.20 | 68,093 |
| Fictional Characters from Great Britain | 0 | - | 4.13 | 31,743 |
| Wonderwall Lyrics | 0 | - | 4.24 | 71,443 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 258,258 |
| Most-Spoken Languages of the United States | 0 | - | 4.44 | 202,579 |
| Russia Multiple Choice | 0 | - | 4.57 | 39,615 |
| Famous French People | 0 | - | 4.12 | 24,653 |
| Movies Set in France | 0 | - | 4.26 | 12,862 |
| French Inventions | 0 | - | 4.08 | 13,631 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 43,748 |
| History of Paris | 0 | - | 4.24 | 13,333 |
| Word Chain - Germany | 0 | - | 4.32 | 21,961 |
| The Trojan War | 0 | - | 4.81 | 37,864 |
| Name that Greek Letter | 0 | - | 4.93 | 311,480 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.83 | 103,009 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 114,863 |
| Word Chain - Italy | 0 | - | 4.07 | 22,700 |
| Italy Multiple Choice | 0 | - | 4.74 | 99,685 |
| Embarrassing Chapters in Italian History | 0 | - | 4.21 | 11,690 |
| Ancient Roman Trivia #1 | 0 | - | 4.83 | 75,167 |
| Roman Emperors | 0 | - | 4.96 | 109,683 |
| Geography of the Dutch Empire | 0 | - | 4.68 | 33,599 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,182 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 76,207 |
| Word Chain - United Kingdom | 0 | - | 4.06 | 28,792 |
| The British Royal Family - Modern Times | 0 | - | 4.15 | 21,154 |
| People on Money - England | 0 | - | 4.34 | 16,324 |
| Name a Valid English City | 0 | - | 4.19 | 16,104 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 268,511 |
| European Geography By Letter - A | 0 | - | 4.61 | 128,784 |
| European Geography By Letter - B #1 | 0 | - | 4.73 | 107,550 |
| European Geography By Letter - C | 0 | - | 4.46 | 108,808 |
| European Geography By Letter - D | 0 | - | 4.51 | 103,564 |
| European Geography By Letter - L | 0 | - | 4.52 | 109,009 |
| European Geography By Letter - M | 0 | - | 4.53 | 118,099 |
| European Geography By Letter - P | 0 | - | 4.79 | 93,384 |
| European Geography By Letter - N | 0 | - | 4.43 | 96,817 |
| European Geography By Letter - R | 0 | - | 4.41 | 90,245 |
| European Geography By Letter - V | 0 | - | 4.44 | 89,600 |
| Europe Map Quiz | 0 | - | 5.00 | 4,560,097 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 69,491 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 70,035 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 68,564 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 59,774 |
| European Geography By Letter - S #1 | 0 | - | 4.62 | 96,900 |
| Four Letter European Geography #1 | 0 | - | 4.48 | 24,412 |
| Four Letter European Geography #2 | 0 | - | 4.59 | 17,313 |
| Capitals of French Regions | 0 | - | 4.42 | 15,504 |
| Kings of France Quiz | 0 | - | 4.15 | 31,672 |
| Capitals of German States | 0 | - | 4.73 | 28,196 |
| Chancellors of Germany, 1949–present | 0 | - | 4.57 | 22,060 |
| Country Quiz on a Map - Germany | 0 | - | 4.94 | 31,547 |
| Olympian Gods Quiz | 0 | - | 4.96 | 472,022 |
| The Life of Alexander the Great | 0 | - | 4.49 | 17,997 |
| Ancient Greek Words | 0 | - | 4.92 | 105,541 |
| British to American Food Translation. | 0 | - | 3.40 | 51,302 |
| Things British People Know that Americans Don't | 0 | - | 4.23 | 50,359 |
| Beatles Songs Quiz | 0 | - | 4.96 | 223,553 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 283,833 |
| Famous Scottish People | 0 | - | 4.20 | 17,905 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 360,400 |
| Top World Languages | 0 | - | 4.91 | 769,754 |
| Africa Map Quiz | 0 | - | 5.00 | 2,036,569 |
| Official Languages of South Africa | 0 | - | 4.55 | 25,603 |
| Oceania Map Quiz | 0 | - | 4.98 | 606,197 |
| Australian Capitals | 0 | - | 4.92 | 61,891 |
| European Physical Geography | 0 | - | 4.24 | 32,805 |
| History of Russia Quiz | 0 | - | 4.48 | 31,121 |
| Geography of Russia | 0 | - | 4.56 | 20,913 |
| Slovakia... or Slovenia? | 0 | - | 4.70 | 40,886 |
| History of Austria | 0 | - | 4.69 | 17,167 |
| Austria Country Quiz | 0 | - | 4.57 | 57,283 |
| Belgium Country Quiz | 0 | - | 4.68 | 68,554 |
| France Country Quiz | 0 | - | 4.74 | 129,172 |
| Biggest French Empire Countries | 0 | - | 4.50 | 63,668 |
| Geography of the French Empire | 0 | - | 4.51 | 26,214 |
| The French Revolution | 0 | - | 4.45 | 22,887 |
| France Multiple Choice | 0 | - | 4.37 | 39,961 |
| Tour de France Winners | 0 | - | 4.24 | 14,517 |
| History of France Quiz | 0 | - | 4.56 | 41,725 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 22,836 |
| Greece Country Quiz | 0 | - | 4.70 | 63,404 |
| History of Ireland Quiz | 0 | - | 4.44 | 20,286 |
| History of Italy | 0 | - | 4.53 | 31,069 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 418,763 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 52,876 |
| Luxembourg Country Quiz | 0 | - | 4.74 | 32,114 |
| Monaco Country Quiz | 0 | - | 4.46 | 39,857 |
| Netherlands Country Quiz | 0 | - | 4.51 | 77,163 |
| Nordic Cities Map Quiz | 0 | - | 4.75 | 88,014 |
| The Vikings! | 0 | - | 4.46 | 27,805 |
| Portugal Country Quiz | 0 | - | 4.68 | 68,672 |
