| European Countries by First 2 Letters | 0 | - | 4.95 | 526,776 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,093 |
| States of Germany | 0 | - | 4.96 | 150,482 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,151 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,620 |
| Regions of Italy | 0 | - | 4.92 | 74,908 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,945 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,594 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,469 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,573 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,703 |
| Official European Union Languages | 0 | - | 4.97 | 237,191 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,052 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,690 |
| The Vikings! | 0 | - | 4.46 | 28,260 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,602 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,609 |
| History of Italy | 0 | - | 4.55 | 31,856 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,281 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,505 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,014 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,260 |
| Celtic Nations | 0 | - | 4.69 | 46,838 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,944 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,242 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,577 |
| Counties of England | 0 | - | 4.97 | 790,397 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,892 |
| Regions of France | 0 | - | 4.78 | 119,516 |
| France Immigration by Country | 0 | - | 4.72 | 76,042 |
| Famous Germans | 0 | - | 4.50 | 54,702 |
| German Groups of Things | 0 | - | 4.46 | 38,337 |
| Germany True or False? | 0 | - | 4.61 | 48,580 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,574 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,669 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,910 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,704 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,095 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,101 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,476 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,351 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,207 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,443 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,984 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,515 |
| History of Austria | 0 | - | 4.70 | 17,773 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,407 |
| Geography of the French Empire | 0 | - | 4.45 | 26,960 |
| The French Revolution | 0 | - | 4.46 | 23,816 |
| France Multiple Choice | 0 | - | 4.38 | 40,653 |
| History of France | 0 | - | 4.59 | 56,293 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,899 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,400 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,745 |
| The Portuguese Empire | 0 | - | 4.54 | 12,005 |
| American to British Word Translation | 0 | - | 4.12 | 136,592 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,753 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,154 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,315 |
| Champions League Winners | 0 | - | 4.92 | 997,918 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,931 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,548 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,465 |
| Departments of France | 0 | - | 4.93 | 52,998 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,400 |
| England or Wales? | 0 | - | 4.94 | 45,392 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,755 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,477 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,612 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,088 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,353 |
| Slavic Languages | 0 | - | 4.68 | 54,049 |
| Word Chain - France | 0 | - | 4.38 | 42,611 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,458 |
| Italian Foods | 0 | - | 4.31 | 72,288 |
| The Mafia Quiz | 0 | - | 4.46 | 23,218 |
| History of The Netherlands | 0 | - | 4.46 | 17,339 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,277 |
| Canary Islands | 0 | - | 4.61 | 17,420 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,242 |
| British Spellings | 0 | - | 4.07 | 99,288 |
| British Groups of Things | 0 | - | 4.25 | 82,721 |
| British Acronyms | 0 | - | 4.39 | 45,656 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,972 |
| Geography of Scotland | 0 | - | 4.63 | 21,505 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,939 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,559 |
| Geography of Germany | 0 | - | 4.35 | 17,109 |
| History of Germany | 0 | - | 4.39 | 52,661 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,943 |
| Name that Greek Letter | 0 | - | 4.94 | 321,968 |
| History of Spain | 0 | - | 4.29 | 21,017 |
| Languages of Spain | 0 | - | 4.36 | 23,170 |
| British to American Word Translation | 0 | - | 3.75 | 254,721 |
| British Foods by Description | 0 | - | 3.94 | 48,272 |
| British and American Word Differences | 0 | - | 2.64 | 46,766 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,528 |
| Bridges of London | 0 | - | 4.17 | 10,066 |
| British Sport Trivia | 0 | - | 4.37 | 20,382 |
| Famous Welsh People | 0 | - | 4.21 | 9,780 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,746 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,296 |
| History of Russia Quiz | 0 | - | 4.49 | 31,807 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,598 |
| Famous French People | 0 | - | 4.12 | 28,040 |
| Movies Set in France | 0 | - | 4.26 | 13,087 |
| French Inventions | 0 | - | 4.08 | 13,867 |
| History of Paris | 0 | - | 4.24 | 13,623 |
| Word Chain - Germany | 0 | - | 4.31 | 22,492 |
| The Trojan War | 0 | - | 4.83 | 39,478 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,775 |
| Word Chain - Italy | 0 | - | 4.07 | 23,103 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,054 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,137 |
| Roman Emperors | 0 | - | 4.95 | 118,684 |
| Famous Nordic People | 0 | - | 4.34 | 19,910 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,554 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,620 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,253 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,481 |
| People on Money - England | 0 | - | 4.29 | 16,573 |
| Name a Valid English City | 0 | - | 4.19 | 16,645 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,418 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,356 |
| Australian Capitals | 0 | - | 4.92 | 62,610 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,517 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,996 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,962 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,815 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,319 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,081 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,925 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,702 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,075 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,412 |
| Europe Map Quiz | 0 | - | 5.00 | 4,736,650 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,034 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,666 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,996 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,031 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,669 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,236 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,681 |
| Capitals of French Regions | 0 | - | 4.45 | 15,997 |
| Capitals of German States | 0 | - | 4.74 | 28,848 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,135 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,156 |
| Ancient Greek Words | 0 | - | 4.92 | 110,859 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,458 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,513 |
| Africa Map Quiz | 0 | - | 5.00 | 2,106,434 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,400 |
| European Physical Geography | 0 | - | 4.26 | 33,387 |
| Geography of Russia | 0 | - | 4.57 | 21,446 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,808 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,197 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,690 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,309 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,417 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,224 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,933 |
| Geography of the British Empire | 0 | - | 4.48 | 39,526 |
| Champions League Top 4 | 0 | - | 4.77 | 134,203 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,442,090 |
| Asia Map Quiz | 0 | - | 4.99 | 908,336 |
| Countries of Africa | 0 | - | 5.00 | 2,512,603 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,955 |
| African East Coast | 0 | - | 4.96 | 95,204 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,078 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,969 |
| Australia Map Quiz | 0 | - | 4.94 | 342,784 |
| United States Map Quiz | 0 | - | 4.98 | 4,144,219 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,498 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,350 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,361 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,664 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,306 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,744 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,978 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,430 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,569 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,246 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,993 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,344 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,445 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,564 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,839 |
| European Geography A-Z | 0 | - | 4.28 | 49,043 |
| Country Codes of Europe | 0 | - | 3.46 | 13,662 |
| The Only European Country ... | 0 | - | 4.91 | 214,328 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,851 |
| Austria... or Australia? | 0 | - | 4.68 | 103,958 |
| Presidents of France | 0 | - | 4.25 | 23,934 |
| French Foods | 0 | - | 4.00 | 27,608 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,813 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,801 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,310 |
| Italian Inventions | 0 | - | 3.81 | 18,416 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,037 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,972 |
