| European Countries by First 2 Letters | 0 | - | 4.95 | 532,545 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,696 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,451 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,787 |
| States of Germany | 0 | - | 4.95 | 154,531 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,701 |
| Regions of Italy | 0 | - | 4.92 | 77,095 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,809 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,333 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,772 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,843 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,735 |
| Official European Union Languages | 0 | - | 4.97 | 239,819 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,662 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,919 |
| The Vikings! | 0 | - | 4.46 | 28,407 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,390 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,323 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,059 |
| History of Italy | 0 | - | 4.55 | 32,148 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,382 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,825 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,426 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,507 |
| Celtic Nations | 0 | - | 4.61 | 47,101 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,029 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,774 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,855 |
| Counties of England | 0 | - | 4.97 | 803,017 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,777 |
| Regions of France | 0 | - | 4.70 | 122,117 |
| France Immigration by Country | 0 | - | 4.70 | 76,939 |
| Famous Germans | 0 | - | 4.50 | 55,796 |
| German Groups of Things | 0 | - | 4.47 | 38,637 |
| Germany True or False? | 0 | - | 4.61 | 49,022 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,474 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,387 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,775 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,408 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,834 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,953 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,774 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,754 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,851 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,993 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,518 |
| History of Austria | 0 | - | 4.70 | 17,975 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,661 |
| Geography of the French Empire | 0 | - | 4.45 | 27,218 |
| The French Revolution | 0 | - | 4.47 | 24,148 |
| France Multiple Choice | 0 | - | 4.39 | 40,850 |
| History of France | 0 | - | 4.61 | 57,626 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,810 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,560 |
| The Portuguese Empire | 0 | - | 4.58 | 12,107 |
| American to British Word Translation | 0 | - | 4.14 | 139,706 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,063 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,530 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,038 |
| Champions League Winners | 0 | - | 4.92 | 1,016,278 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,892 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,942 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,948 |
| Departments of France | 0 | - | 4.93 | 55,171 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,746 |
| England or Wales? | 0 | - | 4.94 | 45,971 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,168 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,745 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,720 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,332 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 122,222 |
| Slavic Languages | 0 | - | 4.67 | 54,699 |
| Famous French People | 0 | - | 4.05 | 36,110 |
| Word Chain - France | 0 | - | 4.38 | 42,939 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,742 |
| Italian Foods | 0 | - | 4.30 | 73,285 |
| The Mafia Quiz | 0 | - | 4.46 | 23,440 |
| History of The Netherlands | 0 | - | 4.46 | 17,556 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,628 |
| Canary Islands | 0 | - | 4.62 | 17,542 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,077 |
| British Spellings | 0 | - | 4.06 | 99,608 |
| British Groups of Things | 0 | - | 4.26 | 83,019 |
| British Acronyms | 0 | - | 4.40 | 45,944 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,109 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,119 |
| Geography of Scotland | 0 | - | 4.63 | 21,744 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,949 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,089 |
| Geography of Germany | 0 | - | 4.35 | 17,286 |
| History of Germany | 0 | - | 4.39 | 52,973 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,994 |
| Name that Greek Letter | 0 | - | 4.93 | 324,994 |
| History of Spain | 0 | - | 4.23 | 21,165 |
| Languages of Spain | 0 | - | 4.36 | 23,438 |
| British to American Word Translation | 0 | - | 3.74 | 255,347 |
| British Foods by Description | 0 | - | 3.94 | 48,391 |
| British and American Word Differences | 0 | - | 2.63 | 46,930 |
| British Geography Quiz #2 | 0 | - | 4.30 | 28,223 |
| Bridges of London | 0 | - | 4.17 | 10,144 |
| British Sport Trivia | 0 | - | 4.39 | 20,530 |
| Famous Welsh People | 0 | - | 4.34 | 11,690 |
| Malta Country Quiz | 0 | - | 4.81 | 31,238 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,851 |
| History of Russia Quiz | 0 | - | 4.47 | 32,006 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,873 |
| Movies Set in France | 0 | - | 4.26 | 13,153 |
| French Inventions | 0 | - | 4.10 | 13,928 |
| History of Paris | 0 | - | 4.24 | 13,682 |
| Word Chain - Germany | 0 | - | 4.31 | 22,683 |
| The Trojan War | 0 | - | 4.83 | 39,993 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,968 |
| Word Chain - Italy | 0 | - | 4.07 | 23,223 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,164 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,594 |
| Roman Emperors | 0 | - | 4.95 | 121,217 |
| Famous Nordic People | 0 | - | 4.34 | 20,308 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,850 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,645 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,099 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,412 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,579 |
| People on Money - England | 0 | - | 4.29 | 16,645 |
| Name a Valid English City | 0 | - | 4.19 | 16,828 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,717 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,383 |
| Australian Capitals | 0 | - | 4.92 | 62,834 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,219 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,620 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,052 |
| European Geography By Letter - D | 0 | - | 4.49 | 117,792 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,127 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,583 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,170 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,647 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,082 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,650 |
| Europe Map Quiz | 0 | - | 5.00 | 4,788,620 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,533 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,187 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,464 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,432 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,472 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,548 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,746 |
| Capitals of French Regions | 0 | - | 4.45 | 16,184 |
| Capitals of German States | 0 | - | 4.74 | 29,072 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,546 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,798 |
| Ancient Greek Words | 0 | - | 4.93 | 112,476 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,354 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,812 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,474 |
| European Physical Geography | 0 | - | 4.26 | 33,597 |
| Geography of Russia | 0 | - | 4.57 | 21,601 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,131 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,857 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,505 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,375 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,457 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,815 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,464 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,260 |
| Geography of the British Empire | 0 | - | 4.48 | 39,848 |
| Champions League Top 4 | 0 | - | 4.78 | 139,113 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,589 |
| Asia Map Quiz | 0 | - | 4.99 | 925,306 |
| Africa Map Quiz | 0 | - | 5.00 | 2,128,838 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,470 |
| Australia Map Quiz | 0 | - | 4.95 | 346,187 |
| United States Map Quiz | 0 | - | 4.98 | 4,171,527 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,973 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,924 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,829 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,257 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,268 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,537 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,252 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,010 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,614 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,249 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,621 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,620 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,899 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,923 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,155 |
| European Geography A-Z | 0 | - | 4.29 | 49,486 |
| Country Codes of Europe | 0 | - | 3.45 | 13,833 |
| The Only European Country ... | 0 | - | 4.91 | 219,058 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,540 |
| European Geographic Groups of Four | 0 | - | 4.56 | 20,233 |
| Austria... or Australia? | 0 | - | 4.67 | 104,772 |
| Presidents of France | 0 | - | 4.25 | 24,339 |
| French Foods | 0 | - | 4.00 | 27,773 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,243 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,048 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,873 |
| Italian Inventions | 0 | - | 3.81 | 18,476 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,658 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,118 |
