| European Countries by First 2 Letters | 0 | - | 4.95 | 531,173 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,547 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,278 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,251 |
| States of Germany | 0 | - | 4.95 | 153,667 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,408 |
| Regions of Italy | 0 | - | 4.92 | 76,480 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,543 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,759 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,515 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,778 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,449 |
| Official European Union Languages | 0 | - | 4.97 | 239,188 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,289 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,720 |
| Malta Country Quiz | 0 | - | 4.81 | 31,157 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,171 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,957 |
| History of Italy | 0 | - | 4.55 | 32,092 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,092 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,754 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,340 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,457 |
| Celtic Nations | 0 | - | 4.69 | 47,035 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,775 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,812 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 174,152 |
| Regions of France | 0 | - | 4.70 | 121,504 |
| France Immigration by Country | 0 | - | 4.70 | 76,757 |
| Famous Germans | 0 | - | 4.50 | 55,597 |
| German Groups of Things | 0 | - | 4.47 | 38,563 |
| Germany True or False? | 0 | - | 4.61 | 48,930 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,239 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,949 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,571 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,368 |
| Counties of England | 0 | - | 4.97 | 800,161 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,556 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,170 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,247 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,506 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,626 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,522 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,408 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,024 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,378 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,283 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,427 |
| Champions League Winners | 0 | - | 4.92 | 1,011,513 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,650 |
| History of Austria | 0 | - | 4.70 | 17,928 |
| Geography of the French Empire | 0 | - | 4.45 | 27,180 |
| The French Revolution | 0 | - | 4.47 | 24,088 |
| France Multiple Choice | 0 | - | 4.39 | 40,792 |
| History of France | 0 | - | 4.61 | 57,379 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,528 |
| The Vikings! | 0 | - | 4.46 | 28,382 |
| The Portuguese Empire | 0 | - | 4.58 | 12,088 |
| American to British Word Translation | 0 | - | 4.14 | 139,442 |
| Languages of the United Kingdom | 0 | - | 4.14 | 40,985 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,670 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,841 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,083 |
| Famous French People | 0 | - | 4.07 | 35,940 |
| Departments of France | 0 | - | 4.93 | 54,686 |
| Word Chain - France | 0 | - | 4.38 | 42,874 |
| Italian Foods | 0 | - | 4.30 | 73,041 |
| The Mafia Quiz | 0 | - | 4.46 | 23,397 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,657 |
| History of The Netherlands | 0 | - | 4.46 | 17,503 |
| Canary Islands | 0 | - | 4.62 | 17,503 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,901 |
| British Spellings | 0 | - | 4.06 | 99,534 |
| British Groups of Things | 0 | - | 4.25 | 82,945 |
| British Acronyms | 0 | - | 4.40 | 45,880 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,071 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,009 |
| Geography of Scotland | 0 | - | 4.63 | 21,691 |
| England or Wales? | 0 | - | 4.94 | 45,848 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,334 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,677 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,686 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,996 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,962 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,708 |
| Slavic Languages | 0 | - | 4.68 | 54,544 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,959 |
| Geography of Germany | 0 | - | 4.35 | 17,223 |
| History of Germany | 0 | - | 4.39 | 52,923 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,880 |
| Name that Greek Letter | 0 | - | 4.93 | 324,427 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,690 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,555 |
| History of Spain | 0 | - | 4.23 | 21,133 |
| Languages of Spain | 0 | - | 4.36 | 23,373 |
| British to American Word Translation | 0 | - | 3.74 | 255,222 |
| British Foods by Description | 0 | - | 3.94 | 48,353 |
| British and American Word Differences | 0 | - | 2.63 | 46,909 |
| British Geography Quiz #2 | 0 | - | 4.29 | 28,139 |
| Bridges of London | 0 | - | 4.17 | 10,130 |
| British Sport Trivia | 0 | - | 4.37 | 20,492 |
| Famous Welsh People | 0 | - | 4.31 | 11,607 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,498 |
| History of Russia Quiz | 0 | - | 4.47 | 31,975 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,805 |
| Movies Set in France | 0 | - | 4.26 | 13,137 |
| French Inventions | 0 | - | 4.10 | 13,912 |
| History of Paris | 0 | - | 4.24 | 13,665 |
| Word Chain - Germany | 0 | - | 4.31 | 22,644 |
| The Trojan War | 0 | - | 4.83 | 39,885 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,485 |
| Word Chain - Italy | 0 | - | 4.07 | 23,201 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,136 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,309 |
| Roman Emperors | 0 | - | 4.95 | 120,654 |
| Famous Nordic People | 0 | - | 4.34 | 20,212 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,627 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,004 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,371 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,551 |
| People on Money - England | 0 | - | 4.29 | 16,628 |
| Name a Valid English City | 0 | - | 4.19 | 16,771 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,991 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,826 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,130 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,545 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,914 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,460 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,133 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,547 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,370 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,125 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,375 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,967 |
| Europe Map Quiz | 0 | - | 5.00 | 4,775,976 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,408 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,065 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,357 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,330 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,983 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,358 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,595 |
| Capitals of French Regions | 0 | - | 4.45 | 16,137 |
| Capitals of German States | 0 | - | 4.74 | 29,021 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,442 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,422 |
| Ancient Greek Words | 0 | - | 4.93 | 112,091 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,490 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,266 |
| Oceania Map Quiz | 0 | - | 4.98 | 656,621 |
| Australian Capitals | 0 | - | 4.92 | 62,782 |
| European Physical Geography | 0 | - | 4.26 | 33,560 |
| Geography of Russia | 0 | - | 4.57 | 21,560 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,044 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,537 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,349 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,271 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,220 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,399 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,749 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,426 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,009 |
| Geography of the British Empire | 0 | - | 4.48 | 39,789 |
| Champions League Top 4 | 0 | - | 4.77 | 137,767 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,370 |
| Asia Map Quiz | 0 | - | 4.99 | 921,474 |
| Africa Map Quiz | 0 | - | 5.00 | 2,123,888 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,084 |
| Australia Map Quiz | 0 | - | 4.95 | 345,509 |
| United States Map Quiz | 0 | - | 4.98 | 4,165,583 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,127 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,794 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,975 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,413 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,369 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,712 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,570 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,252 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,997 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,626 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,106 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,229 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,790 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,506 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 116,384 |
| European Geography A-Z | 0 | - | 4.29 | 49,397 |
| Country Codes of Europe | 0 | - | 3.43 | 13,768 |
| The Only European Country ... | 0 | - | 4.91 | 217,901 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,916 |
| European Geographic Groups of Four | 0 | - | 4.57 | 18,348 |
| Austria... or Australia? | 0 | - | 4.68 | 104,592 |
| Presidents of France | 0 | - | 4.25 | 24,258 |
| French Foods | 0 | - | 4.00 | 27,740 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,137 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,980 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,065 |
| Italian Inventions | 0 | - | 3.81 | 18,463 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,501 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,088 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,308 |
