| Germany Multiple Choice | 0 | - | 4.84 | 54,768 |
| States of Germany | 0 | - | 4.95 | 155,006 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,840 |
| England or Wales? | 0 | - | 4.94 | 46,077 |
| Italy True or False? | 0 | - | 4.42 | 47,666 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,859 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,197 |
| Australia True or False | 0 | - | 4.87 | 57,230 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,526 |
| Sweden True or False? | 0 | - | 4.53 | 40,594 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,543 |
| Regions of Italy | 0 | - | 4.92 | 77,298 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,942 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,647 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,917 |
| Departments of France | 0 | - | 4.93 | 55,444 |
| Famous Germans | 0 | - | 4.50 | 55,887 |
| German Groups of Things | 0 | - | 4.47 | 38,679 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,790 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,880 |
| Official European Union Languages | 0 | - | 4.97 | 240,418 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,862 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,499 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,406 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,683 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,117 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,908 |
| French History Multiple Choice | 0 | - | 4.55 | 33,281 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,552 |
| Celtic Nations | 0 | - | 4.61 | 47,130 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,160 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,292 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,647 |
| Regions of France | 0 | - | 4.70 | 122,461 |
| France Immigration by Country | 0 | - | 4.70 | 77,030 |
| Capitals of German States | 0 | - | 4.74 | 29,099 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,600 |
| History of Germany | 0 | - | 4.39 | 53,010 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,602 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,572 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,964 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,500 |
| Counties of England | 0 | - | 4.97 | 804,580 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,985 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,905 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,539 |
| Australia... or New Zealand? | 0 | - | 4.83 | 62,130 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,168 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,928 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,193 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,221 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,999 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,849 |
| States of Germany Map Quiz | 0 | - | 4.92 | 134,017 |
| Word Chain - Germany | 0 | - | 4.31 | 22,702 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,922 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,673 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,335 |
| Champions League Winners | 0 | - | 4.92 | 1,018,404 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,837 |
| France Multiple Choice | 0 | - | 4.39 | 40,881 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,580 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,449 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,488 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,504 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,876 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,450 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,406 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,359 |
| Andorra Country Quiz | 0 | - | 4.91 | 32,003 |
| Famous French People | 0 | - | 4.05 | 36,178 |
| France Cities Map Quiz | 0 | - | 4.96 | 168,029 |
| Word Chain - France | 0 | - | 4.38 | 42,969 |
| Germany Country Quiz | 0 | - | 4.82 | 159,114 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,285 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,291 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,077 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,468 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,272 |
| Italian Foods | 0 | - | 4.30 | 73,414 |
| The Mafia Quiz | 0 | - | 4.46 | 23,454 |
| History of The Netherlands | 0 | - | 4.46 | 17,576 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,645 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,069 |
| Canary Islands | 0 | - | 4.62 | 17,550 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,158 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,179 |
| British Spellings | 0 | - | 4.06 | 99,637 |
| British Groups of Things | 0 | - | 4.26 | 83,046 |
| British Acronyms | 0 | - | 4.40 | 45,984 |
| UK Immigration by Country | 0 | - | 4.94 | 141,934 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,133 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,323 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,086 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,230 |
| Geography of Scotland | 0 | - | 4.63 | 21,833 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,547 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,809 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,742 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,478 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,407 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,082 |
| Slavic Languages | 0 | - | 4.67 | 54,794 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,310 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,684 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,166 |
| France A-Z | 0 | - | 4.16 | 38,367 |
| Geography of Germany | 0 | - | 4.36 | 17,439 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,203 |
| Name that Greek Letter | 0 | - | 4.93 | 325,364 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,764 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,834 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,670 |
| Most Common First Names in Spain | 0 | - | 4.33 | 55,395 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,548 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 87,051 |
| Switzerland A-Z | 0 | - | 4.45 | 25,798 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 70,040 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,116 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,164 |
| Malta Country Quiz | 0 | - | 4.81 | 31,274 |
| Canada Multiple Choice Quiz | 0 | - | 4.50 | 49,762 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,040 |
| History of Russia Quiz | 0 | - | 4.47 | 32,030 |
| Movies Set in France | 0 | - | 4.26 | 13,161 |
| French Inventions | 0 | - | 4.10 | 13,933 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,834 |
| History of Paris | 0 | - | 4.24 | 13,687 |
| The Trojan War | 0 | - | 4.83 | 40,103 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,303 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 128,022 |
| History of Italy | 0 | - | 4.55 | 32,191 |
| Word Chain - Italy | 0 | - | 4.07 | 23,232 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,186 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,712 |
| Roman Emperors | 0 | - | 4.95 | 121,482 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,857 |
| Famous Nordic People | 0 | - | 4.34 | 20,353 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,651 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,479 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,425 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,584 |
| People on Money - England | 0 | - | 4.29 | 20,704 |
| Name a Valid English City | 0 | - | 4.19 | 16,844 |
| UK General Knowledge Multiple Choice #3 | 0 | - | 4.53 | 18,182 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 281,101 |
| Japan Multiple Choice | 0 | - | 4.48 | 40,868 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,722 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,437 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,869 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,405 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,937 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,374 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,911 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,350 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,945 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,212 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,845 |
| Europe Map Quiz | 0 | - | 5.00 | 4,794,459 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,584 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,256 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,524 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,477 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,606 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,631 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,799 |
| Capitals of French Regions | 0 | - | 4.45 | 16,216 |
| Kings of France Quiz | 0 | - | 4.22 | 32,975 |
| German Loan Words | 0 | - | 4.27 | 141,276 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,609 |
| Ancient Greek Words | 0 | - | 4.93 | 112,713 |
| British to American Food Translation | 0 | - | 3.38 | 52,066 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,610 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,838 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 293,028 |
| Famous Scottish People | 0 | - | 4.22 | 18,444 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,612 |
| Australian Capitals | 0 | - | 4.92 | 62,865 |
| European Physical Geography | 0 | - | 4.26 | 33,620 |
| Geography of Russia | 0 | - | 4.57 | 21,624 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,172 |
| History of Austria | 0 | - | 4.70 | 17,992 |
| Austria Country Quiz | 0 | - | 4.57 | 60,136 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,394 |
| France Country Quiz | 0 | - | 4.70 | 135,846 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,410 |
| Geography of the French Empire | 0 | - | 4.45 | 27,238 |
| The French Revolution | 0 | - | 4.47 | 24,172 |
| Tour de France Winners | 0 | - | 4.27 | 15,550 |
| History of France | 0 | - | 4.61 | 57,750 |
| Bundesliga Champions | 0 | - | 4.25 | 57,468 |
| All Bundesliga Teams Ever | 0 | - | 4.35 | 47,932 |
| German History A-Z | 0 | - | 4.49 | 24,954 |
| German Inventions | 0 | - | 3.91 | 30,290 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,693 |
| Greece Country Quiz | 0 | - | 4.74 | 66,738 |
| Italy Country Quiz | 0 | - | 4.77 | 124,258 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,560 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,634 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,996 |
