| Germany Multiple Choice | 0 | - | 4.84 | 54,030 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,501 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,546 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,177 |
| Capitals of German States | 0 | - | 4.74 | 28,805 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,088 |
| States of Germany | 0 | - | 4.96 | 149,905 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,970 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,399 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,552 |
| Official European Union Languages | 0 | - | 4.97 | 236,434 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,643 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,001 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,379 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,421 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,235 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,510 |
| History of Italy | 0 | - | 4.55 | 31,806 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,124 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,470 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,970 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,230 |
| Celtic Nations | 0 | - | 4.69 | 46,803 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,815 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,677 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,716 |
| Capitals of French Regions | 0 | - | 4.45 | 15,981 |
| Geography of Germany | 0 | - | 4.35 | 17,079 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,543 |
| Famous Germans | 0 | - | 4.50 | 54,590 |
| German Groups of Things | 0 | - | 4.46 | 38,295 |
| Germany True or False? | 0 | - | 4.61 | 48,514 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,293 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,165 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,119 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,172 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,711 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,770 |
| History of Austria | 0 | - | 4.70 | 17,742 |
| Geography of the French Empire | 0 | - | 4.48 | 26,920 |
| The French Revolution | 0 | - | 4.46 | 23,764 |
| France Multiple Choice | 0 | - | 4.38 | 40,625 |
| History of France | 0 | - | 4.59 | 55,952 |
| Regions of Italy | 0 | - | 4.92 | 74,640 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,773 |
| The Vikings! | 0 | - | 4.45 | 28,237 |
| The Portuguese Empire | 0 | - | 4.54 | 11,984 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,217 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,088 |
| American to British Word Translation | 0 | - | 4.06 | 117,030 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,693 |
| Champions League Winners | 0 | - | 4.92 | 995,691 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,370 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,065 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,041 |
| Presidents of France | 0 | - | 4.25 | 23,888 |
| Departments of France | 0 | - | 4.93 | 52,738 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,353 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,954 |
| England or Wales? | 0 | - | 4.94 | 45,292 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,392 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,435 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,596 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,957 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,918 |
| Slavic Languages | 0 | - | 4.67 | 53,949 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,769 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,503 |
| History of Germany | 0 | - | 4.39 | 52,603 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,516 |
| Name that Greek Letter | 0 | - | 4.94 | 321,512 |
| History of Spain | 0 | - | 4.29 | 20,994 |
| Languages of Spain | 0 | - | 4.36 | 23,140 |
| British to American Word Translation | 0 | - | 3.74 | 253,284 |
| British Foods by Description | 0 | - | 3.94 | 48,226 |
| British and American Word Differences | 0 | - | 2.67 | 45,908 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,499 |
| Bridges of London | 0 | - | 4.17 | 10,061 |
| British Sport Trivia | 0 | - | 4.37 | 20,357 |
| Famous Welsh People | 0 | - | 4.21 | 9,769 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,420 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,061 |
| History of Russia Quiz | 0 | - | 4.49 | 31,782 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,554 |
| Word Chain - Germany | 0 | - | 4.31 | 22,473 |
| The Trojan War | 0 | - | 4.83 | 39,413 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,461 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,015 |
| Roman Emperors | 0 | - | 4.95 | 118,371 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,371 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,028 |
| Australian Capitals | 0 | - | 4.92 | 62,589 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,341 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,845 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,778 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,652 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,176 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,815 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,636 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,599 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,001 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,269 |
| Europe Map Quiz | 0 | - | 5.00 | 4,729,276 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,976 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,599 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,926 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,963 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,568 |
| Regions of France | 0 | - | 4.78 | 119,121 |
| France Immigration by Country | 0 | - | 4.72 | 75,936 |
| German Loan Words | 0 | - | 4.27 | 135,442 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,431 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,491 |
| Ancient Greek Words | 0 | - | 4.92 | 110,619 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,294 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,748 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,034 |
| British Noble Ranks | 0 | - | 3.85 | 20,367 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,906 |
| Name Every Beatles Song | 0 | - | 4.97 | 233,939 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,258 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,487 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,869 |
| European Physical Geography | 0 | - | 4.26 | 33,369 |
| Geography of Russia | 0 | - | 4.57 | 21,420 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,759 |
| German History A-Z | 0 | - | 4.49 | 24,200 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,314 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,586 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,671 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,187 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,387 |
| Champions League Top 4 | 0 | - | 4.77 | 133,657 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,183 |
| Asia Map Quiz | 0 | - | 4.99 | 906,472 |
| Countries of Africa | 0 | - | 5.00 | 2,506,050 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,765 |
| African East Coast | 0 | - | 4.96 | 94,982 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,865 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,749 |
| Australia Map Quiz | 0 | - | 4.94 | 342,355 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,650 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,986 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,171 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,853 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,193 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,164 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,405 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,852 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,227 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,444 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,122 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,896 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,276 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,384 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,486 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,436 |
| European Geography A-Z | 0 | - | 4.28 | 48,978 |
| Country Codes of Europe | 0 | - | 3.46 | 13,649 |
| The Only European Country ... | 0 | - | 4.91 | 213,648 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,427 |
| Austria... or Australia? | 0 | - | 4.68 | 103,837 |
| Word Chain - France | 0 | - | 4.38 | 42,570 |
| Bundesliga Champions | 0 | - | 4.23 | 55,589 |
| All Bundesliga Teams Ever | 0 | - | 4.35 | 45,031 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,754 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,763 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,801 |
| Italian Foods | 0 | - | 4.30 | 72,142 |
| History of The Netherlands | 0 | - | 4.46 | 17,304 |
| Canary Islands | 0 | - | 4.61 | 17,392 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,117 |
| British Spellings | 0 | - | 4.07 | 99,197 |
| British Groups of Things | 0 | - | 4.25 | 82,662 |
| British Acronyms | 0 | - | 4.39 | 45,610 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,942 |
| British Monopoly Board | 0 | - | 4.52 | 41,024 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,392 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,496 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,409 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,764 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,547 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,517 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,198 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,460 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,001 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,333 |
| African Island Countries | 0 | - | 4.96 | 100,719 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,548 |
| Australian States and Territories | 0 | - | 4.95 | 140,598 |
| Australian Immigration by Country | 0 | - | 4.81 | 76,999 |
| Australia True or False | 0 | - | 4.87 | 56,487 |
| Flags of North and South America | 0 | - | 4.99 | 366,476 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,129 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,120 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,081 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,729 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,047 |
| North America Map Quiz | 0 | - | 4.98 | 244,215 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,363 |
