| Regions of Italy | 0 | - | 4.92 | 76,513 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,284 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,558 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,282 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,396 |
| History of Italy | 0 | - | 4.55 | 32,095 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,117 |
| States of Germany | 0 | - | 4.95 | 153,730 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,424 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,565 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,795 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,522 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,782 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,470 |
| Official European Union Languages | 0 | - | 4.97 | 239,238 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,315 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,982 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,666 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,808 |
| Languages of the United Kingdom | 0 | - | 4.14 | 40,995 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,694 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,180 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,043 |
| Name that Greek Letter | 0 | - | 4.93 | 324,460 |
| Italian Foods | 0 | - | 4.30 | 73,053 |
| The Mafia Quiz | 0 | - | 4.46 | 23,398 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,967 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,527 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,358 |
| Roman Emperors | 0 | - | 4.95 | 120,690 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,760 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,353 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,457 |
| Celtic Nations | 0 | - | 4.69 | 47,040 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,918 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,798 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,851 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 174,318 |
| Languages of Spain | 0 | - | 4.36 | 23,377 |
| Counties of England | 0 | - | 4.97 | 800,397 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,353 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,798 |
| Top African Languages on a Map | 0 | - | 4.94 | 74,778 |
| Regions of France | 0 | - | 4.70 | 121,533 |
| France Immigration by Country | 0 | - | 4.70 | 76,772 |
| Famous Germans | 0 | - | 4.50 | 55,606 |
| German Groups of Things | 0 | - | 4.47 | 38,567 |
| Germany True or False? | 0 | - | 4.61 | 48,934 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,268 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,577 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,371 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,567 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,272 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,518 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,658 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,707 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,546 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,462 |
| History of Austria | 0 | - | 4.70 | 17,933 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,053 |
| Geography of the French Empire | 0 | - | 4.45 | 27,186 |
| The French Revolution | 0 | - | 4.47 | 24,094 |
| France Multiple Choice | 0 | - | 4.39 | 40,793 |
| History of France | 0 | - | 4.61 | 57,395 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,409 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,531 |
| Word Chain - Italy | 0 | - | 4.07 | 23,201 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,140 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,360 |
| The Vikings! | 0 | - | 4.46 | 28,384 |
| The Portuguese Empire | 0 | - | 4.58 | 12,090 |
| American to British Word Translation | 0 | - | 4.14 | 139,464 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,293 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,462 |
| Champions League Winners | 0 | - | 4.92 | 1,011,832 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,523 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,753 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,914 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,138 |
| Departments of France | 0 | - | 4.93 | 54,712 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,620 |
| England or Wales? | 0 | - | 4.94 | 45,851 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,386 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,562 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,680 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,691 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,033 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,017 |
| Slavic Languages | 0 | - | 4.68 | 54,555 |
| Famous French People | 0 | - | 4.07 | 35,947 |
| Word Chain - France | 0 | - | 4.38 | 42,881 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,511 |
| History of The Netherlands | 0 | - | 4.46 | 17,506 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,565 |
| Canary Islands | 0 | - | 4.62 | 17,503 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,915 |
| British Spellings | 0 | - | 4.06 | 99,534 |
| British Groups of Things | 0 | - | 4.25 | 82,954 |
| British Acronyms | 0 | - | 4.40 | 45,884 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,076 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,025 |
| Geography of Scotland | 0 | - | 4.63 | 21,692 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,718 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,963 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,975 |
| Geography of Germany | 0 | - | 4.35 | 17,229 |
| History of Germany | 0 | - | 4.39 | 52,927 |
| Italian Inventions | 0 | - | 3.81 | 18,463 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 43,599 |
| Geography of the Roman Empire | 0 | - | 4.56 | 52,108 |
| Roman Names for Places | 0 | - | 4.62 | 58,549 |
| History of Spain | 0 | - | 4.23 | 21,135 |
| British to American Word Translation | 0 | - | 3.74 | 255,231 |
| British Foods by Description | 0 | - | 3.94 | 48,354 |
| British and American Word Differences | 0 | - | 2.63 | 46,910 |
| British Geography Quiz #2 | 0 | - | 4.29 | 28,154 |
| Bridges of London | 0 | - | 4.17 | 10,130 |
| British Sport Trivia | 0 | - | 4.37 | 20,495 |
| Famous Welsh People | 0 | - | 4.31 | 11,613 |
| History of Russia Quiz | 0 | - | 4.47 | 31,975 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,812 |
| Movies Set in France | 0 | - | 4.26 | 13,138 |
| French Inventions | 0 | - | 4.10 | 13,913 |
| History of Paris | 0 | - | 4.24 | 13,665 |
| Word Chain - Germany | 0 | - | 4.31 | 22,647 |
| The Trojan War | 0 | - | 4.83 | 39,892 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,516 |
| Famous Nordic People | 0 | - | 4.34 | 20,219 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,627 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,013 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,373 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,554 |
| People on Money - England | 0 | - | 4.29 | 16,630 |
| Name a Valid English City | 0 | - | 4.19 | 16,773 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,028 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,856 |
| Australian Capitals | 0 | - | 4.92 | 62,785 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,160 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,569 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,948 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,489 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,159 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,592 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,531 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,143 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,391 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,990 |
| Europe Map Quiz | 0 | - | 5.00 | 4,776,719 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,415 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,074 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,369 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,340 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,997 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,872 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,366 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,602 |
| Capitals of French Regions | 0 | - | 4.45 | 16,142 |
| Capitals of German States | 0 | - | 4.74 | 29,026 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,446 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,536 |
| Ancient Greek Words | 0 | - | 4.93 | 112,117 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,674 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,222 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,546 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,336 |
| Oceania Map Quiz | 0 | - | 4.98 | 656,907 |
| European Physical Geography | 0 | - | 4.26 | 33,562 |
| Geography of Russia | 0 | - | 4.57 | 21,562 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,050 |
| Italian History A-Z | 0 | - | 4.21 | 17,753 |
| Serie A Champions | 0 | - | 4.29 | 58,599 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,143 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,279 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,228 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,404 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,750 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,427 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,030 |
| Geography of the British Empire | 0 | - | 4.48 | 39,798 |
| Champions League Top 4 | 0 | - | 4.77 | 137,845 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,548 |
| Asia Map Quiz | 0 | - | 4.99 | 921,798 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 33,246 |
| Africa Map Quiz | 0 | - | 5.00 | 2,124,273 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,100 |
| Australia Map Quiz | 0 | - | 4.95 | 345,548 |
| United States Map Quiz | 0 | - | 4.98 | 4,166,006 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,005 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,181 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,799 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,043 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,468 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,388 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,729 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,593 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,275 |
| European Geography By Letter - I | 0 | - | 4.09 | 96,013 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,643 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,127 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,244 |
