| Regions of Italy | 0 | - | 4.92 | 76,405 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,635 |
| England or Wales? | 0 | - | 4.94 | 45,827 |
| Germany True or False? | 0 | - | 4.61 | 48,917 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,714 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,919 |
| Australia True or False | 0 | - | 4.87 | 56,988 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,518 |
| Sweden True or False? | 0 | - | 4.53 | 40,413 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,958 |
| States of Germany | 0 | - | 4.95 | 153,521 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,359 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,043 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,510 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,634 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,474 |
| Departments of France | 0 | - | 4.93 | 54,601 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,900 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,396 |
| Official European Union Languages | 0 | - | 4.97 | 239,072 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,230 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,477 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,680 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,147 |
| Italian Foods | 0 | - | 4.30 | 73,003 |
| The Mafia Quiz | 0 | - | 4.46 | 23,391 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,933 |
| Roman Emperors | 0 | - | 4.95 | 120,517 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,937 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,794 |
| French History Multiple Choice | 0 | - | 4.55 | 33,144 |
| History of Italy | 0 | - | 4.55 | 32,082 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,444 |
| Celtic Nations | 0 | - | 4.69 | 47,008 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,706 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,625 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,810 |
| Regions of France | 0 | - | 4.70 | 121,404 |
| France Immigration by Country | 0 | - | 4.70 | 76,716 |
| Famous Germans | 0 | - | 4.50 | 55,566 |
| German Groups of Things | 0 | - | 4.46 | 38,548 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,248 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,193 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,539 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,364 |
| Counties of England | 0 | - | 4.97 | 799,759 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,504 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,738 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,756 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,198 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,463 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,452 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,443 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,260 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,962 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,316 |
| Word Chain - Italy | 0 | - | 4.07 | 23,197 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,135 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,344 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,316 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,438 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,230 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,343 |
| Champions League Winners | 0 | - | 4.92 | 1,010,808 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,629 |
| France Multiple Choice | 0 | - | 4.39 | 40,781 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,244 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,204 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,391 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,771 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,475 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,669 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,940 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,812 |
| Famous French People | 0 | - | 4.07 | 35,911 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,283 |
| Word Chain - France | 0 | - | 4.38 | 42,865 |
| Germany Country Quiz | 0 | - | 4.83 | 158,309 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,733 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,111 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,968 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,794 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,697 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,459 |
| History of The Netherlands | 0 | - | 4.46 | 17,499 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,174 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,336 |
| Canary Islands | 0 | - | 4.62 | 17,499 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,365 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,864 |
| British Spellings | 0 | - | 4.06 | 99,527 |
| British Groups of Things | 0 | - | 4.25 | 82,930 |
| British Acronyms | 0 | - | 4.40 | 45,868 |
| UK Immigration by Country | 0 | - | 4.94 | 141,242 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,063 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,332 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,139 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,988 |
| Geography of Scotland | 0 | - | 4.63 | 21,677 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,204 |
| Afghanistan True or False? | 0 | - | 4.54 | 25,431 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,665 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,678 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,946 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,817 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,685 |
| Slavic Languages | 0 | - | 4.68 | 54,512 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,904 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,648 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,098 |
| France A-Z | 0 | - | 4.16 | 38,280 |
| History of Germany | 0 | - | 4.39 | 52,912 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,574 |
| Name that Greek Letter | 0 | - | 4.93 | 324,324 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 41,426 |
| Geography of the Roman Empire | 0 | - | 4.56 | 52,041 |
| Roman Names for Places | 0 | - | 4.62 | 58,478 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,363 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,529 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,675 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,132 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,578 |
| Switzerland A-Z | 0 | - | 4.45 | 25,700 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,799 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,055 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,900 |
| Malta Country Quiz | 0 | - | 4.81 | 31,135 |
| Canada Multiple Choice Quiz | 0 | - | 4.50 | 49,477 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,441 |
| History of Russia Quiz | 0 | - | 4.47 | 31,968 |
| Movies Set in France | 0 | - | 4.26 | 13,135 |
| French Inventions | 0 | - | 4.10 | 13,911 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,427 |
| History of Paris | 0 | - | 4.24 | 13,665 |
| Word Chain - Germany | 0 | - | 4.31 | 22,638 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,268 |
| The Trojan War | 0 | - | 4.83 | 39,841 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,387 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,701 |
| Italian Inventions | 0 | - | 3.81 | 18,463 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,744 |
| Famous Nordic People | 0 | - | 4.34 | 20,195 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,625 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,320 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,369 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,549 |
| People on Money - England | 0 | - | 4.29 | 16,627 |
| Name a Valid English City | 0 | - | 4.19 | 16,764 |
| UK General Knowledge Multiple Choice #3 | 0 | - | 4.53 | 18,127 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,869 |
| Japan Multiple Choice | 0 | - | 4.48 | 40,757 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,741 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,091 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,492 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,880 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,432 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,101 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,474 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,280 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,096 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,347 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,934 |
| Europe Map Quiz | 0 | - | 5.00 | 4,774,197 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,386 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,044 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,340 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,317 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,961 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,579 |
| Capitals of French Regions | 0 | - | 4.45 | 16,121 |
| Kings of France Quiz | 0 | - | 4.20 | 32,841 |
| Capitals of German States | 0 | - | 4.74 | 29,002 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,418 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,222 |
| Ancient Greek Words | 0 | - | 4.93 | 112,030 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,663 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,213 |
| British to American Food Translation | 0 | - | 3.38 | 51,991 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,502 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,309 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,180 |
| Famous Scottish People | 0 | - | 4.22 | 18,418 |
| Oceania Map Quiz | 0 | - | 4.98 | 655,659 |
| Australian Capitals | 0 | - | 4.92 | 62,774 |
| European Physical Geography | 0 | - | 4.26 | 33,549 |
| Geography of Russia | 0 | - | 4.57 | 21,560 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,037 |
| History of Austria | 0 | - | 4.70 | 17,923 |
| Austria Country Quiz | 0 | - | 4.57 | 59,880 |
| Belgium Country Quiz | 0 | - | 4.72 | 71,994 |
| France Country Quiz | 0 | - | 4.70 | 135,285 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,257 |
| Geography of the French Empire | 0 | - | 4.45 | 27,167 |
| The French Revolution | 0 | - | 4.47 | 24,076 |
| Tour de France Winners | 0 | - | 4.27 | 15,437 |
| History of France | 0 | - | 4.61 | 57,342 |
| Greece Country Quiz | 0 | - | 4.74 | 66,419 |
| Italy Country Quiz | 0 | - | 4.77 | 123,701 |
| Italian History A-Z | 0 | - | 4.21 | 17,750 |
| Serie A Champions | 0 | - | 4.29 | 58,542 |
