| European Countries by First 2 Letters | 0 | - | 4.95 | 529,331 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,336 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,977 |
| States of Germany | 0 | - | 4.96 | 152,407 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,998 |
| Regions of Italy | 0 | - | 4.92 | 75,825 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,110 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,890 |
| 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 | 69,100 |
| Official European Union Languages | 0 | - | 4.97 | 238,429 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,796 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,062 |
| The Vikings! | 0 | - | 4.46 | 28,341 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,967 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,824 |
| History of Italy | 0 | - | 4.55 | 31,968 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,758 |
| 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 | 310,356 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,522 |
| Regions of France | 0 | - | 4.75 | 120,710 |
| France Immigration by Country | 0 | - | 4.70 | 76,488 |
| Famous Germans | 0 | - | 4.50 | 55,272 |
| 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 | 47,986 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,454 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,327 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,772 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,259 |
| Counties of England | 0 | - | 4.97 | 796,280 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,209 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,651 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,075 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,355 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,920 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,020 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,363 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,752 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,964 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,565 |
| Champions League Winners | 0 | - | 4.92 | 1,006,140 |
| 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 | 56,944 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,111 |
| The Portuguese Empire | 0 | - | 4.58 | 12,062 |
| American to British Word Translation | 0 | - | 4.14 | 138,995 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,886 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,118 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,732 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,024 |
| Famous French People | 0 | - | 4.06 | 35,515 |
| Departments of France | 0 | - | 4.93 | 54,051 |
| 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 | 17,428 |
| Canary Islands | 0 | - | 4.62 | 17,475 |
| Switzerland Immigration by Country | 0 | - | 4.68 | 29,687 |
| British Spellings | 0 | - | 4.06 | 99,445 |
| British Groups of Things | 0 | - | 4.25 | 82,862 |
| British Acronyms | 0 | - | 4.40 | 45,790 |
| 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 | 130,259 |
| 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 | 141,662 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,871 |
| 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 | 34,761 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,472 |
| Geography of Germany | 0 | - | 4.35 | 17,182 |
| History of Germany | 0 | - | 4.39 | 52,810 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,098 |
| Name that Greek Letter | 0 | - | 4.93 | 323,360 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,604 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,455 |
| 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 | 46,876 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,588 |
| Bridges of London | 0 | - | 4.17 | 10,101 |
| British Sport Trivia | 0 | - | 4.37 | 20,455 |
| Famous Welsh People | 0 | - | 4.29 | 11,469 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,125 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,030 |
| 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 | 13,896 |
| History of Paris | 0 | - | 4.24 | 13,645 |
| Word Chain - Germany | 0 | - | 4.31 | 22,583 |
| The Trojan War | 0 | - | 4.83 | 39,710 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,773 |
| 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 | 84,506 |
| Roman Emperors | 0 | - | 4.95 | 119,968 |
| 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 | 16,718 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,989 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,034 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 117,248 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,763 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,444 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,401 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,500 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,460 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,764 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,635 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,953 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,364 |
| Europe Map Quiz | 0 | - | 5.00 | 4,761,232 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,257 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,924 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,206 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,223 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,544 |
| 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 | 500,589 |
| Ancient Greek Words | 0 | - | 4.93 | 111,544 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,088 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,643 |
| Africa Map Quiz | 0 | - | 5.00 | 2,117,251 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,874 |
| Australian Capitals | 0 | - | 4.92 | 62,717 |
| 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 | 436,920 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,110 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,995 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,649 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,344 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,435 |
| Geography of the British Empire | 0 | - | 4.48 | 39,665 |
| Champions League Top 4 | 0 | - | 4.77 | 136,306 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,003 |
| Asia Map Quiz | 0 | - | 4.99 | 916,280 |
| Countries of Africa | 0 | - | 5.00 | 2,535,273 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,784 |
| African East Coast | 0 | - | 4.96 | 96,002 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,830 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,654 |
| Australia Map Quiz | 0 | - | 4.95 | 344,507 |
| United States Map Quiz | 0 | - | 4.98 | 4,157,279 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,152 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,636 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,921 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,347 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,496 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,820 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,952 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,637 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,443 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,087 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,671 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,886 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,661 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,149 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,155 |
| European Geography A-Z | 0 | - | 4.29 | 49,258 |
| Country Codes of Europe | 0 | - | 3.43 | 13,707 |
| The Only European Country ... | 0 | - | 4.91 | 216,489 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,048 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,125 |
| Austria... or Australia? | 0 | - | 4.68 | 104,321 |
| Presidents of France | 0 | - | 4.25 | 24,103 |
| French Foods | 0 | - | 4.00 | 27,695 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,981 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,908 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,846 |
| Italian Inventions | 0 | - | 3.81 | 18,437 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,313 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,032 |
