| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,724 |
| Official European Union Languages | 0 | - | 4.97 | 237,249 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,089 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,897 |
| States of Germany | 0 | - | 4.96 | 150,566 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,185 |
| Regions of Italy | 0 | - | 4.92 | 74,943 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,972 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,652 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,505 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 210,265 |
| Departments of France | 0 | - | 4.93 | 53,035 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,405 |
| England or Wales? | 0 | - | 4.94 | 45,406 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,835 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,759 |
| Slavic Languages | 0 | - | 4.68 | 54,065 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,617 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,341 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,617 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,843 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,453 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,759 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,968 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,435 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,729 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,117 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,637 |
| Counties of England | 0 | - | 4.97 | 790,700 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,151 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,847 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,299 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,263 |
| Celtic Nations | 0 | - | 4.69 | 46,839 |
| Regions of France | 0 | - | 4.78 | 119,585 |
| France Immigration by Country | 0 | - | 4.72 | 76,060 |
| Famous Germans | 0 | - | 4.50 | 54,721 |
| German Groups of Things | 0 | - | 4.46 | 38,343 |
| Germany True or False? | 0 | - | 4.61 | 48,591 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,594 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,702 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,939 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,706 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,099 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,730 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,126 |
| The UK for Americans - True or False | 0 | - | 4.44 | 58,447 |
| Champions League Winners | 0 | - | 4.92 | 998,338 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,510 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,386 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,503 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,031 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,611 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,467 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,958 |
| Famous Nordic People | 0 | - | 4.34 | 19,922 |
| The Vikings! | 0 | - | 4.46 | 28,264 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,770 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,181 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,370 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,338 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,579 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,220 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,038 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,638 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,556 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,432 |
| Word Chain - France | 0 | - | 4.38 | 42,619 |
| Germany Country Quiz | 0 | - | 4.82 | 156,839 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,369 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,821 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,803 |
| Italy Country Quiz | 0 | - | 4.82 | 122,442 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,605 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,291 |
| Italian Foods | 0 | - | 4.31 | 72,311 |
| The Mafia Quiz | 0 | - | 4.46 | 23,222 |
| History of The Netherlands | 0 | - | 4.46 | 17,342 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,232 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,838 |
| Canary Islands | 0 | - | 4.61 | 17,420 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,193 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,262 |
| British Spellings | 0 | - | 4.07 | 99,303 |
| British Groups of Things | 0 | - | 4.25 | 82,728 |
| British Acronyms | 0 | - | 4.39 | 45,666 |
| UK Immigration by Country | 0 | - | 4.94 | 139,902 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,975 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,516 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,566 |
| Geography of Scotland | 0 | - | 4.63 | 21,512 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,822 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,482 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,613 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,114 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,433 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,973 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,569 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,464 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,568 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,981 |
| France A-Z | 0 | - | 4.16 | 38,090 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,710 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,591 |
| History of Germany | 0 | - | 4.39 | 52,668 |
| The Trojan War | 0 | - | 4.83 | 39,490 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,220 |
| Name that Greek Letter | 0 | - | 4.94 | 322,059 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,851 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,470 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,157 |
| Roman Emperors | 0 | - | 4.95 | 118,775 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,988 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,286 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,498 |
| Languages of Spain | 0 | - | 4.36 | 23,188 |
| Switzerland A-Z | 0 | - | 4.45 | 25,538 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,501 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,944 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,505 |
| Malta Country Quiz | 0 | - | 4.81 | 30,879 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 217,378 |
| History of Russia Quiz | 0 | - | 4.49 | 31,814 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,606 |
| Famous French People | 0 | - | 4.12 | 28,062 |
| Movies Set in France | 0 | - | 4.26 | 13,090 |
| French Inventions | 0 | - | 4.08 | 13,869 |
| History of Paris | 0 | - | 4.24 | 13,623 |
| Word Chain - Germany | 0 | - | 4.31 | 22,498 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,347 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,678 |
| History of Italy | 0 | - | 4.55 | 31,861 |
| Word Chain - Italy | 0 | - | 4.07 | 23,113 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,312 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,054 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,520 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,556 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,028 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,258 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,482 |
| People on Money - England | 0 | - | 4.29 | 16,576 |
| Name a Valid English City | 0 | - | 4.19 | 16,649 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,432 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.39 | 32,457 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,815 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,571 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,041 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,005 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,884 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,356 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,135 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,958 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,728 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,105 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,455 |
| Europe Map Quiz | 0 | - | 5.00 | 4,738,171 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,046 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,687 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,007 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,041 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,702 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,261 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,708 |
| Capitals of French Regions | 0 | - | 4.45 | 16,002 |
| Kings of France Quiz | 0 | - | 4.20 | 32,592 |
| Capitals of German States | 0 | - | 4.74 | 28,864 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,147 |
| Ancient Greek Words | 0 | - | 4.92 | 110,898 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,715 |
| British to American Food Translation | 0 | - | 3.38 | 51,885 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,316 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,422 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,553 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,562 |
| Famous Scottish People | 0 | - | 4.22 | 18,343 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,755 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,629 |
| Top World Languages | 0 | - | 4.92 | 814,981 |
| Africa Map Quiz | 0 | - | 5.00 | 2,106,942 |
| Official Languages of South Africa | 0 | - | 4.56 | 26,077 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,743 |
| Australian Capitals | 0 | - | 4.92 | 62,613 |
| European Physical Geography | 0 | - | 4.26 | 33,395 |
| Geography of Russia | 0 | - | 4.57 | 21,451 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,817 |
| History of Austria | 0 | - | 4.70 | 17,777 |
| Austria Country Quiz | 0 | - | 4.57 | 59,441 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,359 |
| France Country Quiz | 0 | - | 4.70 | 134,030 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,974 |
| Geography of the French Empire | 0 | - | 4.45 | 26,963 |
| The French Revolution | 0 | - | 4.46 | 23,826 |
| France Multiple Choice | 0 | - | 4.38 | 40,657 |
| Tour de France Winners | 0 | - | 4.27 | 15,255 |
| History of France | 0 | - | 4.59 | 56,352 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,405 |
| Greece Country Quiz | 0 | - | 4.74 | 65,862 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,399 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,392 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,545 |
