| European Countries by First 2 Letters | 0 | - | 4.95 | 529,341 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,336 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,979 |
| States of Germany | 0 | - | 4.96 | 152,414 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,001 |
| Regions of Italy | 0 | - | 4.92 | 75,827 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,113 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,899 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,176 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,691 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,101 |
| Official European Union Languages | 0 | - | 4.97 | 238,434 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,801 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,068 |
| The Vikings! | 0 | - | 4.46 | 28,341 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,967 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,825 |
| History of Italy | 0 | - | 4.55 | 31,968 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,759 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,651 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,219 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,382 |
| Celtic Nations | 0 | - | 4.69 | 46,932 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,344 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,378 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,530 |
| Regions of France | 0 | - | 4.72 | 120,714 |
| France Immigration by Country | 0 | - | 4.70 | 76,489 |
| Famous Germans | 0 | - | 4.50 | 55,274 |
| German Groups of Things | 0 | - | 4.46 | 38,472 |
| Germany True or False? | 0 | - | 4.61 | 48,786 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,987 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,454 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,329 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,772 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,259 |
| Counties of England | 0 | - | 4.97 | 796,290 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,210 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,667 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,079 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,373 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,924 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,031 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,364 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,752 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,965 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,565 |
| Champions League Winners | 0 | - | 4.92 | 1,006,162 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,479 |
| History of Austria | 0 | - | 4.70 | 17,859 |
| Geography of the French Empire | 0 | - | 4.45 | 27,055 |
| The French Revolution | 0 | - | 4.46 | 23,927 |
| France Multiple Choice | 0 | - | 4.39 | 40,733 |
| History of France | 0 | - | 4.59 | 56,945 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,113 |
| The Portuguese Empire | 0 | - | 4.58 | 12,062 |
| American to British Word Translation | 0 | - | 4.14 | 138,997 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,887 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,130 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,738 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,041 |
| Famous French People | 0 | - | 4.06 | 35,527 |
| Departments of France | 0 | - | 4.93 | 54,052 |
| Word Chain - France | 0 | - | 4.38 | 42,771 |
| Italian Foods | 0 | - | 4.30 | 72,759 |
| The Mafia Quiz | 0 | - | 4.46 | 23,316 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,540 |
| History of The Netherlands | 0 | - | 4.46 | 17,429 |
| Canary Islands | 0 | - | 4.62 | 17,475 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,689 |
| British Spellings | 0 | - | 4.06 | 99,445 |
| British Groups of Things | 0 | - | 4.25 | 82,862 |
| British Acronyms | 0 | - | 4.40 | 45,791 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,034 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,760 |
| Geography of Scotland | 0 | - | 4.63 | 21,613 |
| England or Wales? | 0 | - | 4.94 | 45,670 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,264 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,595 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,654 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,665 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,880 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,421 |
| Slavic Languages | 0 | - | 4.68 | 54,347 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,762 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,473 |
| Geography of Germany | 0 | - | 4.35 | 17,182 |
| History of Germany | 0 | - | 4.39 | 52,810 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,133 |
| Name that Greek Letter | 0 | - | 4.93 | 323,369 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,604 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,456 |
| History of Spain | 0 | - | 4.23 | 21,084 |
| Languages of Spain | 0 | - | 4.36 | 23,313 |
| British to American Word Translation | 0 | - | 3.74 | 255,064 |
| British Foods by Description | 0 | - | 3.94 | 48,328 |
| British and American Word Differences | 0 | - | 2.63 | 46,878 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,589 |
| Bridges of London | 0 | - | 4.17 | 10,101 |
| British Sport Trivia | 0 | - | 4.37 | 20,455 |
| Famous Welsh People | 0 | - | 4.29 | 11,470 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,134 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,034 |
| History of Russia Quiz | 0 | - | 4.47 | 31,913 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,720 |
| Movies Set in France | 0 | - | 4.26 | 13,118 |
| French Inventions | 0 | - | 4.08 | 13,897 |
| History of Paris | 0 | - | 4.24 | 13,645 |
| Word Chain - Germany | 0 | - | 4.31 | 22,583 |
| The Trojan War | 0 | - | 4.83 | 39,711 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,777 |
| Word Chain - Italy | 0 | - | 4.07 | 23,162 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,100 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,507 |
| Roman Emperors | 0 | - | 4.95 | 119,974 |
| Famous Nordic People | 0 | - | 4.34 | 20,103 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,614 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,854 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,339 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,526 |
| People on Money - England | 0 | - | 4.29 | 16,610 |
| Name a Valid English City | 0 | - | 4.19 | 16,719 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,056 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,055 |
| European Geography By Letter - B #1 | 0 | - | 4.64 | 117,418 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,781 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,458 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,407 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,509 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,465 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,771 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,638 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,958 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,368 |
| Europe Map Quiz | 0 | - | 5.00 | 4,761,424 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,261 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,926 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,207 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,227 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,547 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,419 |
| Capitals of French Regions | 0 | - | 4.45 | 16,065 |
| Capitals of German States | 0 | - | 4.74 | 28,948 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,325 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,604 |
| Ancient Greek Words | 0 | - | 4.93 | 111,544 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,096 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,649 |
| Africa Map Quiz | 0 | - | 5.00 | 2,117,279 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,916 |
| Australian Capitals | 0 | - | 4.92 | 62,718 |
| European Physical Geography | 0 | - | 4.26 | 33,500 |
| Geography of Russia | 0 | - | 4.57 | 21,524 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,949 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,934 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,112 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,018 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,649 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,345 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,438 |
| Geography of the British Empire | 0 | - | 4.48 | 39,665 |
| Champions League Top 4 | 0 | - | 4.77 | 136,317 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,035 |
| Asia Map Quiz | 0 | - | 4.99 | 916,313 |
| Countries of Africa | 0 | - | 5.00 | 2,535,456 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,787 |
| African East Coast | 0 | - | 4.96 | 96,009 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,833 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,657 |
| Australia Map Quiz | 0 | - | 4.95 | 344,516 |
| United States Map Quiz | 0 | - | 4.98 | 4,157,354 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,156 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,637 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,929 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,356 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,506 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,824 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,957 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,640 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,448 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,091 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,675 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,890 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,662 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,151 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,158 |
| European Geography A-Z | 0 | - | 4.29 | 49,259 |
| Country Codes of Europe | 0 | - | 3.43 | 13,707 |
| The Only European Country ... | 0 | - | 4.91 | 216,495 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,052 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,125 |
| Austria... or Australia? | 0 | - | 4.68 | 104,323 |
| Presidents of France | 0 | - | 4.25 | 24,103 |
| French Foods | 0 | - | 4.00 | 27,695 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,982 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,908 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,854 |
| Italian Inventions | 0 | - | 3.81 | 18,437 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,315 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,032 |
