| European Countries by First 2 Letters | 0 | - | 4.95 | 532,799 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,718 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,489 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,125 |
| States of Germany | 0 | - | 4.95 | 154,725 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,749 |
| Regions of Italy | 0 | - | 4.92 | 77,185 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,854 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,457 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,837 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,848 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,805 |
| Official European Union Languages | 0 | - | 4.97 | 239,933 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,740 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,161 |
| The Vikings! | 0 | - | 4.46 | 28,417 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,410 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,356 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,077 |
| History of Italy | 0 | - | 4.55 | 32,166 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,445 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,835 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,450 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,520 |
| Celtic Nations | 0 | - | 4.61 | 47,111 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,084 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,983 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,189 |
| Counties of England | 0 | - | 4.97 | 803,622 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,194 |
| Regions of France | 0 | - | 4.70 | 122,247 |
| France Immigration by Country | 0 | - | 4.70 | 76,972 |
| Famous Germans | 0 | - | 4.50 | 55,834 |
| German Groups of Things | 0 | - | 4.47 | 38,649 |
| Germany True or False? | 0 | - | 4.61 | 49,047 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,535 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,471 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,861 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,425 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,891 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,051 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,837 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,779 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,993 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,067 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,740 |
| History of Austria | 0 | - | 4.70 | 17,983 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,742 |
| Geography of the French Empire | 0 | - | 4.45 | 27,223 |
| The French Revolution | 0 | - | 4.47 | 24,155 |
| France Multiple Choice | 0 | - | 4.39 | 40,864 |
| History of France | 0 | - | 4.61 | 57,679 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,916 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,566 |
| The Portuguese Empire | 0 | - | 4.58 | 12,116 |
| American to British Word Translation | 0 | - | 4.14 | 139,770 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,079 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,577 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,158 |
| Champions League Winners | 0 | - | 4.92 | 1,017,122 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,109 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,119 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,094 |
| Departments of France | 0 | - | 4.93 | 55,277 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,757 |
| England or Wales? | 0 | - | 4.94 | 45,995 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,319 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,758 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,726 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,389 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 123,178 |
| Slavic Languages | 0 | - | 4.67 | 54,737 |
| Famous French People | 0 | - | 4.05 | 36,130 |
| Word Chain - France | 0 | - | 4.38 | 42,948 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,751 |
| Italian Foods | 0 | - | 4.30 | 73,323 |
| The Mafia Quiz | 0 | - | 4.46 | 23,445 |
| History of The Netherlands | 0 | - | 4.46 | 17,564 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,649 |
| Canary Islands | 0 | - | 4.62 | 17,545 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,108 |
| British Spellings | 0 | - | 4.06 | 99,618 |
| British Groups of Things | 0 | - | 4.26 | 83,032 |
| British Acronyms | 0 | - | 4.40 | 45,954 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,122 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,176 |
| Geography of Scotland | 0 | - | 4.63 | 21,755 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,000 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,113 |
| Geography of Germany | 0 | - | 4.35 | 17,296 |
| History of Germany | 0 | - | 4.39 | 52,990 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,446 |
| Name that Greek Letter | 0 | - | 4.93 | 325,132 |
| History of Spain | 0 | - | 4.23 | 21,169 |
| Languages of Spain | 0 | - | 4.36 | 23,455 |
| British to American Word Translation | 0 | - | 3.74 | 255,371 |
| British Foods by Description | 0 | - | 3.94 | 48,397 |
| British and American Word Differences | 0 | - | 2.63 | 46,936 |
| British Geography Quiz #2 | 0 | - | 4.30 | 28,238 |
| Bridges of London | 0 | - | 4.17 | 10,147 |
| British Sport Trivia | 0 | - | 4.39 | 20,539 |
| Famous Welsh People | 0 | - | 4.34 | 11,707 |
| Malta Country Quiz | 0 | - | 4.81 | 31,247 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,929 |
| History of Russia Quiz | 0 | - | 4.47 | 32,011 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,888 |
| Movies Set in France | 0 | - | 4.26 | 13,154 |
| French Inventions | 0 | - | 4.10 | 13,930 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,748 |
| History of Paris | 0 | - | 4.24 | 13,683 |
| Word Chain - Germany | 0 | - | 4.31 | 22,692 |
| The Trojan War | 0 | - | 4.83 | 40,023 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,077 |
| Word Chain - Italy | 0 | - | 4.07 | 23,227 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,170 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,644 |
| Roman Emperors | 0 | - | 4.95 | 121,325 |
| Famous Nordic People | 0 | - | 4.34 | 20,322 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,860 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,645 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,120 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,419 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,582 |
| People on Money - England | 0 | - | 4.29 | 16,647 |
| Name a Valid English City | 0 | - | 4.19 | 16,834 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,879 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,528 |
| Australian Capitals | 0 | - | 4.92 | 62,847 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,298 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,692 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,185 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,503 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,221 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,718 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,247 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,861 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,143 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,737 |
| Europe Map Quiz | 0 | - | 5.00 | 4,790,833 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,544 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,214 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,480 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,445 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,536 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,584 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,766 |
| Capitals of French Regions | 0 | - | 4.45 | 16,189 |
| Capitals of German States | 0 | - | 4.74 | 29,081 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,568 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,087 |
| Ancient Greek Words | 0 | - | 4.93 | 112,570 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,518 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,903 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,876 |
| European Physical Geography | 0 | - | 4.26 | 33,608 |
| Geography of Russia | 0 | - | 4.57 | 21,613 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,145 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,094 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,563 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,405 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,471 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,832 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,478 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,321 |
| Geography of the British Empire | 0 | - | 4.48 | 39,861 |
| Champions League Top 4 | 0 | - | 4.78 | 139,371 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,964 |
| Asia Map Quiz | 0 | - | 4.99 | 925,992 |
| Africa Map Quiz | 0 | - | 5.00 | 2,129,808 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,543 |
| Australia Map Quiz | 0 | - | 4.95 | 346,330 |
| United States Map Quiz | 0 | - | 4.98 | 4,172,555 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,164 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,960 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,042 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,423 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,353 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,611 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,315 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,084 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,672 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,310 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,701 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,672 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,916 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,977 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,345 |
| European Geography A-Z | 0 | - | 4.29 | 49,501 |
| Country Codes of Europe | 0 | - | 3.45 | 13,841 |
| The Only European Country ... | 0 | - | 4.91 | 219,333 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,698 |
| European Geographic Groups of Four | 0 | - | 4.56 | 20,357 |
| Austria... or Australia? | 0 | - | 4.67 | 104,800 |
| Presidents of France | 0 | - | 4.25 | 24,355 |
| French Foods | 0 | - | 4.00 | 27,784 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,259 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,059 |
| Figures from Greek Mythology | 0 | - | 4.91 | 189,034 |
| Italian Inventions | 0 | - | 3.81 | 18,479 |
| Countries Italy Declared War On | 0 | - | 4.74 | 47,209 |
