| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,304 |
| States of Germany | 0 | - | 4.95 | 153,834 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,471 |
| Germany True or False? | 0 | - | 4.61 | 48,946 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,447 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,573 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,142 |
| Regions of Italy | 0 | - | 4.92 | 76,553 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,596 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,872 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,543 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,792 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,507 |
| Official European Union Languages | 0 | - | 4.97 | 239,314 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,351 |
| Famous Germans | 0 | - | 4.50 | 55,627 |
| German Groups of Things | 0 | - | 4.47 | 38,577 |
| England or Wales? | 0 | - | 4.94 | 45,870 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,956 |
| France Multiple Choice | 0 | - | 4.39 | 40,797 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,534 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,191 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,981 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,821 |
| History of Italy | 0 | - | 4.55 | 32,099 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,763 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,362 |
| Australia True or False | 0 | - | 4.87 | 57,033 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,462 |
| Celtic Nations | 0 | - | 4.69 | 47,048 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,834 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,953 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 174,526 |
| Capitals of German States | 0 | - | 4.74 | 29,030 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,454 |
| Geography of Germany | 0 | - | 4.35 | 17,234 |
| History of Germany | 0 | - | 4.39 | 52,933 |
| Counties of England | 0 | - | 4.97 | 800,673 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,632 |
| Regions of France | 0 | - | 4.70 | 121,611 |
| France Immigration by Country | 0 | - | 4.70 | 76,796 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,285 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,007 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,588 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,372 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,591 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,838 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,409 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,551 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,668 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,966 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,614 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,576 |
| History of Austria | 0 | - | 4.70 | 17,945 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,092 |
| Geography of the French Empire | 0 | - | 4.45 | 27,187 |
| The French Revolution | 0 | - | 4.47 | 24,099 |
| History of France | 0 | - | 4.61 | 57,424 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,449 |
| Word Chain - Germany | 0 | - | 4.31 | 22,653 |
| The Vikings! | 0 | - | 4.46 | 28,386 |
| The Portuguese Empire | 0 | - | 4.58 | 12,091 |
| American to British Word Translation | 0 | - | 4.14 | 139,487 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,001 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,318 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,556 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,408 |
| Champions League Winners | 0 | - | 4.92 | 1,012,274 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,886 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,998 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,223 |
| Departments of France | 0 | - | 4.93 | 54,753 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,675 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,472 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,687 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,695 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,099 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,125 |
| Slavic Languages | 0 | - | 4.68 | 54,572 |
| Famous French People | 0 | - | 4.07 | 35,961 |
| Word Chain - France | 0 | - | 4.38 | 42,888 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,696 |
| Italian Foods | 0 | - | 4.30 | 73,084 |
| The Mafia Quiz | 0 | - | 4.46 | 23,401 |
| History of The Netherlands | 0 | - | 4.46 | 17,512 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,573 |
| Canary Islands | 0 | - | 4.62 | 17,505 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,932 |
| British Spellings | 0 | - | 4.06 | 99,541 |
| British Groups of Things | 0 | - | 4.25 | 82,959 |
| British Acronyms | 0 | - | 4.40 | 45,890 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,079 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,046 |
| Geography of Scotland | 0 | - | 4.63 | 21,699 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,731 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,987 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,237 |
| Name that Greek Letter | 0 | - | 4.93 | 324,520 |
| History of Spain | 0 | - | 4.23 | 21,140 |
| Languages of Spain | 0 | - | 4.36 | 23,380 |
| British to American Word Translation | 0 | - | 3.74 | 255,252 |
| British Foods by Description | 0 | - | 3.94 | 48,357 |
| British and American Word Differences | 0 | - | 2.63 | 46,913 |
| British Geography Quiz #2 | 0 | - | 4.29 | 28,169 |
| Bridges of London | 0 | - | 4.17 | 10,131 |
| British Sport Trivia | 0 | - | 4.37 | 20,501 |
| Famous Welsh People | 0 | - | 4.31 | 11,623 |
| Malta Country Quiz | 0 | - | 4.81 | 31,174 |
| Canada Multiple Choice Quiz | 0 | - | 4.50 | 49,535 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,570 |
| History of Russia Quiz | 0 | - | 4.47 | 31,977 |
| Movies Set in France | 0 | - | 4.26 | 13,139 |
| French Inventions | 0 | - | 4.10 | 13,917 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,529 |
| History of Paris | 0 | - | 4.24 | 13,666 |
| The Trojan War | 0 | - | 4.83 | 39,910 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,568 |
| Word Chain - Italy | 0 | - | 4.07 | 23,201 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,141 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,415 |
| Roman Emperors | 0 | - | 4.95 | 120,744 |
| Famous Nordic People | 0 | - | 4.34 | 20,225 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,627 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,022 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,377 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,558 |
| People on Money - England | 0 | - | 4.29 | 16,633 |
| Name a Valid English City | 0 | - | 4.19 | 16,776 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,175 |
| Japan Multiple Choice | 0 | - | 4.48 | 40,781 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,931 |
| Australian Capitals | 0 | - | 4.92 | 62,793 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,395 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,775 |
| European Geography By Letter - C | 0 | - | 4.46 | 120,243 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,760 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,333 |
| European Geography By Letter - M | 0 | - | 4.69 | 131,817 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,700 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,238 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,471 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,112 |
| Europe Map Quiz | 0 | - | 5.00 | 4,778,165 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,430 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,086 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,382 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,353 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,087 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,384 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,615 |
| Capitals of French Regions | 0 | - | 4.45 | 16,144 |
| German Loan Words | 0 | - | 4.27 | 140,232 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,693 |
| Ancient Greek Words | 0 | - | 4.93 | 112,162 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,650 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,446 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,281 |
| European Physical Geography | 0 | - | 4.26 | 33,566 |
| Geography of Russia | 0 | - | 4.57 | 21,570 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,058 |
| German History A-Z | 0 | - | 4.49 | 24,703 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,751 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,384 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,287 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,238 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,760 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,431 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,064 |
| Geography of the British Empire | 0 | - | 4.48 | 39,800 |
| Champions League Top 4 | 0 | - | 4.77 | 137,970 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,752 |
| Asia Map Quiz | 0 | - | 4.99 | 922,218 |
| Africa Map Quiz | 0 | - | 5.00 | 2,125,050 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,141 |
| Australia Map Quiz | 0 | - | 4.95 | 345,618 |
| United States Map Quiz | 0 | - | 4.98 | 4,166,597 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,274 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,810 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,122 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,565 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,587 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,909 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,728 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,432 |
| European Geography By Letter - I | 0 | - | 4.09 | 96,139 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,782 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,221 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,316 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,812 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,597 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 116,562 |
| European Geography A-Z | 0 | - | 4.29 | 49,418 |
| Country Codes of Europe | 0 | - | 3.43 | 13,771 |
| The Only European Country ... | 0 | - | 4.91 | 218,096 |
| European Countries NOT in NATO | 0 | - | 4.90 | 62,046 |
| European Geographic Groups of Four | 0 | - | 4.60 | 19,183 |
| Austria... or Australia? | 0 | - | 4.68 | 104,621 |
| Presidents of France | 0 | - | 4.25 | 24,275 |
| French Foods | 0 | - | 4.00 | 27,747 |
| Bundesliga Champions | 0 | - | 4.25 | 57,031 |
