| Germany Multiple Choice | 0 | - | 4.84 | 54,452 |
| States of Germany | 0 | - | 4.95 | 153,113 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,261 |
| England or Wales? | 0 | - | 4.94 | 45,788 |
| Italy True or False? | 0 | - | 4.42 | 47,486 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,684 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,474 |
| Australia True or False | 0 | - | 4.87 | 56,948 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,176 |
| Sweden True or False? | 0 | - | 4.53 | 40,375 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,475 |
| Regions of Italy | 0 | - | 4.92 | 76,203 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,401 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,339 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,382 |
| Departments of France | 0 | - | 4.93 | 54,415 |
| Famous Germans | 0 | - | 4.50 | 55,513 |
| German Groups of Things | 0 | - | 4.46 | 38,519 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,610 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,307 |
| Official European Union Languages | 0 | - | 4.97 | 238,880 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,106 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,936 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,094 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,175 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,902 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,771 |
| French History Multiple Choice | 0 | - | 4.55 | 33,116 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,934 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,423 |
| Celtic Nations | 0 | - | 4.69 | 46,988 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,519 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,148 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,816 |
| Regions of France | 0 | - | 4.72 | 121,179 |
| France Immigration by Country | 0 | - | 4.70 | 76,666 |
| Capitals of German States | 0 | - | 4.74 | 28,986 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,394 |
| History of Germany | 0 | - | 4.39 | 52,891 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,133 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,746 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,478 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,335 |
| Counties of England | 0 | - | 4.97 | 798,627 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,421 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 357,969 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,691 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,364 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 85,389 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,263 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,938 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,770 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,124 |
| Word Chain - Germany | 0 | - | 4.31 | 22,612 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,080 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,133 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,107 |
| Champions League Winners | 0 | - | 4.92 | 1,009,538 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,567 |
| France Multiple Choice | 0 | - | 4.39 | 40,769 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,204 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,145 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,367 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,742 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,845 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,321 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,574 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,759 |
| Famous French People | 0 | - | 4.07 | 35,827 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,096 |
| Word Chain - France | 0 | - | 4.38 | 42,832 |
| Germany Country Quiz | 0 | - | 4.83 | 158,143 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,591 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,069 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,945 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,628 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,290 |
| Italian Foods | 0 | - | 4.30 | 72,921 |
| The Mafia Quiz | 0 | - | 4.46 | 23,367 |
| History of The Netherlands | 0 | - | 4.46 | 17,479 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,094 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,164 |
| Canary Islands | 0 | - | 4.62 | 17,490 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,235 |
| Switzerland Immigration by Country | 0 | - | 4.68 | 29,813 |
| British Spellings | 0 | - | 4.06 | 99,501 |
| British Groups of Things | 0 | - | 4.25 | 82,904 |
| British Acronyms | 0 | - | 4.40 | 45,844 |
| UK Immigration by Country | 0 | - | 4.94 | 141,137 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,053 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,131 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,953 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,929 |
| Geography of Scotland | 0 | - | 4.63 | 21,653 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,946 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,638 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,673 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,856 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,539 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,609 |
| Slavic Languages | 0 | - | 4.67 | 54,460 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,846 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,641 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,084 |
| France A-Z | 0 | - | 4.16 | 38,261 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,504 |
| Geography of Germany | 0 | - | 4.35 | 17,206 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,706 |
| Name that Greek Letter | 0 | - | 4.93 | 324,125 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,656 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,281 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,513 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,649 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 42,044 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,483 |
| Switzerland A-Z | 0 | - | 4.45 | 25,684 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,753 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,040 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,857 |
| Malta Country Quiz | 0 | - | 4.81 | 31,109 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,558 |
| Canada Multiple Choice Quiz | 0 | - | 4.50 | 49,414 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,317 |
| History of Russia Quiz | 0 | - | 4.47 | 31,946 |
| Movies Set in France | 0 | - | 4.26 | 13,131 |
| French Inventions | 0 | - | 4.10 | 13,906 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,349 |
| History of Paris | 0 | - | 4.24 | 13,657 |
| The Trojan War | 0 | - | 4.83 | 39,794 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,208 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,464 |
| History of Italy | 0 | - | 4.55 | 32,048 |
| Word Chain - Italy | 0 | - | 4.07 | 23,179 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,123 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,640 |
| Roman Emperors | 0 | - | 4.95 | 120,365 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,716 |
| Famous Nordic People | 0 | - | 4.34 | 20,161 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,622 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,293 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,356 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,544 |
| People on Money - England | 0 | - | 4.29 | 16,623 |
| Name a Valid English City | 0 | - | 4.19 | 16,745 |
| UK General Knowledge Multiple Choice #3 | 0 | - | 4.53 | 18,116 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,651 |
| Japan Multiple Choice | 0 | - | 4.48 | 40,731 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,836 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 120,244 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,612 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,178 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,903 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,202 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,847 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,133 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,942 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,227 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,763 |
| Europe Map Quiz | 0 | - | 5.00 | 4,769,945 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,345 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,004 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,290 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,287 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,829 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,539 |
| Capitals of French Regions | 0 | - | 4.45 | 16,102 |
| Kings of France Quiz | 0 | - | 4.20 | 32,810 |
| German Loan Words | 0 | - | 4.28 | 137,730 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,763 |
| Ancient Greek Words | 0 | - | 4.93 | 111,881 |
| British to American Food Translation | 0 | - | 3.38 | 51,980 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,487 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,934 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,048 |
| Famous Scottish People | 0 | - | 4.22 | 18,411 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,352 |
| Oceania Map Quiz | 0 | - | 4.98 | 644,683 |
| Australian Capitals | 0 | - | 4.92 | 62,750 |
| European Physical Geography | 0 | - | 4.26 | 33,539 |
| Geography of Russia | 0 | - | 4.57 | 21,552 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,007 |
| History of Austria | 0 | - | 4.70 | 17,900 |
| Austria Country Quiz | 0 | - | 4.57 | 59,828 |
| Belgium Country Quiz | 0 | - | 4.72 | 71,919 |
| France Country Quiz | 0 | - | 4.70 | 135,159 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,224 |
| Geography of the French Empire | 0 | - | 4.45 | 27,152 |
| The French Revolution | 0 | - | 4.47 | 24,055 |
| Tour de France Winners | 0 | - | 4.27 | 15,412 |
| History of France | 0 | - | 4.59 | 57,252 |
| Bundesliga Champions | 0 | - | 4.25 | 56,792 |
| All Bundesliga Teams Ever | 0 | - | 4.35 | 45,712 |
| German History A-Z | 0 | - | 4.49 | 24,654 |
| German Inventions | 0 | - | 3.91 | 30,250 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,648 |
| Greece Country Quiz | 0 | - | 4.74 | 66,357 |
| Italy Country Quiz | 0 | - | 4.77 | 123,577 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,881 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,266 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,816 |
